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1640 lines
54 KiB
1640 lines
54 KiB
3 months ago
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#ifndef ITEM_TIMEFUNC_INCLUDED
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#define ITEM_TIMEFUNC_INCLUDED
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/* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/* Function items used by mysql */
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#include <stddef.h>
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#include <sys/types.h>
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#include <algorithm>
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#include "m_ctype.h"
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#include "my_dbug.h"
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#include "my_inttypes.h"
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#include "my_macros.h"
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#include "my_table_map.h"
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#include "my_time.h"
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#include "mysql/udf_registration_types.h"
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#include "mysql_time.h"
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#include "sql/enum_query_type.h"
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#include "sql/field.h"
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#include "sql/item.h"
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#include "sql/item_func.h"
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#include "sql/item_strfunc.h" // Item_str_func
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#include "sql/parse_tree_node_base.h"
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#include "sql/set_var.h"
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#include "sql/sql_const.h"
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#include "sql_string.h"
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class MY_LOCALE;
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class PT_item_list;
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class THD;
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class Time_zone;
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class my_decimal;
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struct Date_time_format;
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struct Interval;
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struct TABLE;
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bool get_interval_value(Item *args, interval_type int_type, String *str_value,
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Interval *interval);
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class Item_func_period_add final : public Item_int_func {
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public:
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Item_func_period_add(const POS &pos, Item *a, Item *b)
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: Item_int_func(pos, a, b) {}
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longlong val_int() override;
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const char *func_name() const override { return "period_add"; }
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bool resolve_type(THD *) override {
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fix_char_length(6); /* YYYYMM */
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return false;
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}
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};
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class Item_func_period_diff final : public Item_int_func {
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public:
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Item_func_period_diff(const POS &pos, Item *a, Item *b)
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: Item_int_func(pos, a, b) {}
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longlong val_int() override;
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const char *func_name() const override { return "period_diff"; }
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bool resolve_type(THD *) override {
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fix_char_length(6); /* YYYYMM */
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return false;
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}
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};
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class Item_func_to_days final : public Item_int_func {
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public:
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Item_func_to_days(const POS &pos, Item *a) : Item_int_func(pos, a) {}
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longlong val_int() override;
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const char *func_name() const override { return "to_days"; }
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enum Functype functype() const override { return TO_DAYS_FUNC; }
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bool resolve_type(THD *) override {
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fix_char_length(6);
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maybe_null = true;
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return false;
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}
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enum_monotonicity_info get_monotonicity_info() const override;
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longlong val_int_endpoint(bool left_endp, bool *incl_endp) override;
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bool check_partition_func_processor(uchar *) override { return false; }
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bool check_valid_arguments_processor(uchar *) override {
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return !has_date_args();
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}
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};
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class Item_func_to_seconds final : public Item_int_func {
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public:
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Item_func_to_seconds(const POS &pos, Item *a) : Item_int_func(pos, a) {}
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longlong val_int() override;
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const char *func_name() const override { return "to_seconds"; }
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bool resolve_type(THD *) override {
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fix_char_length(MY_INT64_NUM_DECIMAL_DIGITS);
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maybe_null = true;
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return false;
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}
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enum_monotonicity_info get_monotonicity_info() const override;
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longlong val_int_endpoint(bool left_endp, bool *incl_endp) override;
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bool check_partition_func_processor(uchar *) override { return false; }
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bool intro_version(uchar *int_arg) override {
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int *input_version = (int *)int_arg;
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/* This function was introduced in 5.5 */
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int output_version = std::max(*input_version, 50500);
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*input_version = output_version;
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return 0;
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}
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/* Only meaningful with date part and optional time part */
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bool check_valid_arguments_processor(uchar *) override {
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return !has_date_args();
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}
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};
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class Item_func_dayofmonth final : public Item_int_func {
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public:
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Item_func_dayofmonth(Item *a) : Item_int_func(a) {}
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Item_func_dayofmonth(const POS &pos, Item *a) : Item_int_func(pos, a) {}
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longlong val_int() override;
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const char *func_name() const override { return "dayofmonth"; }
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enum Functype functype() const override { return DAY_FUNC; }
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bool resolve_type(THD *) override {
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fix_char_length(2); /* 1..31 */
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maybe_null = true;
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return false;
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}
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bool check_partition_func_processor(uchar *) override { return false; }
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bool check_valid_arguments_processor(uchar *) override {
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return !has_date_args();
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}
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};
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/**
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TS-TODO: This should probably have Item_int_func as parent class.
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*/
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class Item_func_month final : public Item_func {
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public:
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Item_func_month(const POS &pos, Item *a) : Item_func(pos, a) {
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set_data_type(MYSQL_TYPE_LONGLONG);
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collation.set_numeric();
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}
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longlong val_int() override;
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double val_real() override {
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DBUG_ASSERT(fixed);
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return (double)Item_func_month::val_int();
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}
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String *val_str(String *str) override {
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longlong nr = val_int();
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if (null_value) return 0;
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str->set(nr, collation.collation);
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return str;
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}
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bool get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzydate) override {
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return get_date_from_int(ltime, fuzzydate);
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}
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bool get_time(MYSQL_TIME *ltime) override { return get_time_from_int(ltime); }
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const char *func_name() const override { return "month"; }
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enum Functype functype() const override { return MONTH_FUNC; }
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enum Item_result result_type() const override { return INT_RESULT; }
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bool resolve_type(THD *) override {
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fix_char_length(2);
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maybe_null = true;
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return false;
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}
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bool check_partition_func_processor(uchar *) override { return false; }
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bool check_valid_arguments_processor(uchar *) override {
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return !has_date_args();
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}
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};
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class Item_func_monthname final : public Item_str_func {
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MY_LOCALE *locale;
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public:
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Item_func_monthname(const POS &pos, Item *a) : Item_str_func(pos, a) {}
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const char *func_name() const override { return "monthname"; }
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String *val_str(String *str) override;
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bool resolve_type(THD *thd) override;
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bool check_partition_func_processor(uchar *) override { return true; }
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bool check_valid_arguments_processor(uchar *) override {
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return !has_date_args();
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}
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};
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class Item_func_dayofyear final : public Item_int_func {
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public:
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Item_func_dayofyear(const POS &pos, Item *a) : Item_int_func(pos, a) {}
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longlong val_int() override;
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const char *func_name() const override { return "dayofyear"; }
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bool resolve_type(THD *) override {
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fix_char_length(3);
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maybe_null = true;
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return false;
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}
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bool check_partition_func_processor(uchar *) override { return false; }
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bool check_valid_arguments_processor(uchar *) override {
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return !has_date_args();
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}
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};
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class Item_func_hour final : public Item_int_func {
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public:
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Item_func_hour(const POS &pos, Item *a) : Item_int_func(pos, a) {}
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longlong val_int() override;
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const char *func_name() const override { return "hour"; }
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enum Functype functype() const override { return HOUR_FUNC; }
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bool resolve_type(THD *) override {
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fix_char_length(2); /* 0..23 */
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maybe_null = true;
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return false;
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}
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bool check_partition_func_processor(uchar *) override { return false; }
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bool check_valid_arguments_processor(uchar *) override {
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return !has_time_args();
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}
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};
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class Item_func_minute final : public Item_int_func {
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public:
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Item_func_minute(const POS &pos, Item *a) : Item_int_func(pos, a) {}
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longlong val_int() override;
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const char *func_name() const override { return "minute"; }
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enum Functype functype() const override { return MINUTE_FUNC; }
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bool resolve_type(THD *) override {
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fix_char_length(2); /* 0..59 */
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maybe_null = true;
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return false;
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}
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bool check_partition_func_processor(uchar *) override { return false; }
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bool check_valid_arguments_processor(uchar *) override {
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return !has_time_args();
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}
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};
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class Item_func_quarter final : public Item_int_func {
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public:
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Item_func_quarter(const POS &pos, Item *a) : Item_int_func(pos, a) {}
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longlong val_int() override;
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const char *func_name() const override { return "quarter"; }
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bool resolve_type(THD *) override {
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fix_char_length(1); /* 1..4 */
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maybe_null = true;
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return false;
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}
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bool check_partition_func_processor(uchar *) override { return false; }
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bool check_valid_arguments_processor(uchar *) override {
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return !has_date_args();
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}
|
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};
|
||
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|
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class Item_func_second final : public Item_int_func {
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public:
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Item_func_second(const POS &pos, Item *a) : Item_int_func(pos, a) {}
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longlong val_int() override;
|
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const char *func_name() const override { return "second"; }
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enum Functype functype() const override { return SECOND_FUNC; }
|
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bool resolve_type(THD *) override {
|
||
|
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fix_char_length(2); /* 0..59 */
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||
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maybe_null = true;
|
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return false;
|
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}
|
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bool check_partition_func_processor(uchar *) override { return false; }
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bool check_valid_arguments_processor(uchar *) override {
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return !has_time_args();
|
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}
|
||
|
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};
|
||
|
|
|
||
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class Item_func_week final : public Item_int_func {
|
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typedef Item_int_func super;
|
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|
|
|
||
|
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public:
|
||
|
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Item_func_week(Item *a, Item *b) : Item_int_func(a, b) {}
|
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Item_func_week(const POS &pos, Item *a, Item *b) : super(pos, a, b) {}
|
||
|
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|
||
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bool itemize(Parse_context *pc, Item **res) override;
|
||
|
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|
||
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longlong val_int() override;
|
||
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const char *func_name() const override { return "week"; }
|
||
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enum Functype functype() const override { return WEEK_FUNC; }
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
fix_char_length(2); /* 0..54 */
|
||
|
|
maybe_null = true;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_yearweek final : public Item_int_func {
|
||
|
|
public:
|
||
|
|
Item_func_yearweek(const POS &pos, Item *a, Item *b)
|
||
|
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: Item_int_func(pos, a, b) {}
|
||
|
|
longlong val_int() override;
|
||
|
|
const char *func_name() const override { return "yearweek"; }
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
fix_char_length(6); /* YYYYWW */
|
||
|
|
maybe_null = true;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
bool check_partition_func_processor(uchar *) override { return false; }
|
||
|
|
bool check_valid_arguments_processor(uchar *) override {
|
||
|
|
return !has_date_args();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_year final : public Item_int_func {
|
||
|
|
public:
|
||
|
|
Item_func_year(const POS &pos, Item *a) : Item_int_func(pos, a) {}
|
||
|
|
longlong val_int() override;
|
||
|
|
const char *func_name() const override { return "year"; }
|
||
|
|
enum Functype functype() const override { return YEAR_FUNC; }
|
||
|
|
enum_monotonicity_info get_monotonicity_info() const override;
|
||
|
|
longlong val_int_endpoint(bool left_endp, bool *incl_endp) override;
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
fix_char_length(5); /* 9999 plus sign */
|
||
|
|
maybe_null = true;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
bool check_partition_func_processor(uchar *) override { return false; }
|
||
|
|
bool check_valid_arguments_processor(uchar *) override {
|
||
|
|
return !has_date_args();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
TS-TODO: This should probably have Item_int_func as parent class.
|
||
|
|
*/
|
||
|
|
class Item_func_weekday : public Item_func {
|
||
|
|
bool odbc_type;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_weekday(const POS &pos, Item *a, bool type_arg)
|
||
|
|
: Item_func(pos, a), odbc_type(type_arg) {
|
||
|
|
set_data_type(MYSQL_TYPE_LONGLONG);
|
||
|
|
collation.set_numeric();
|
||
|
|
}
|
||
|
|
longlong val_int() override;
|
||
|
|
double val_real() override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return static_cast<double>(val_int());
|
||
|
|
}
|
||
|
|
String *val_str(String *str) override {
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
str->set(val_int(), &my_charset_bin);
|
||
|
|
return null_value ? 0 : str;
|
||
|
|
}
|
||
|
|
bool get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzydate) override {
|
||
|
|
return get_date_from_int(ltime, fuzzydate);
|
||
|
|
}
|
||
|
|
bool get_time(MYSQL_TIME *ltime) override { return get_time_from_int(ltime); }
|
||
|
|
const char *func_name() const override {
|
||
|
|
return (odbc_type ? "dayofweek" : "weekday");
|
||
|
|
}
|
||
|
|
enum Functype functype() const override { return WEEKDAY_FUNC; }
|
||
|
|
enum Item_result result_type() const override { return INT_RESULT; }
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
fix_char_length(1);
|
||
|
|
maybe_null = true;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
bool check_partition_func_processor(uchar *) override { return false; }
|
||
|
|
bool check_valid_arguments_processor(uchar *) override {
|
||
|
|
return !has_date_args();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
TS-TODO: Item_func_dayname should be derived from Item_str_func.
|
||
|
|
In the current implementation funny things can happen:
|
||
|
|
select dayname(now())+1 -> 4
|
||
|
|
*/
|
||
|
|
class Item_func_dayname final : public Item_func_weekday {
|
||
|
|
MY_LOCALE *locale;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_dayname(const POS &pos, Item *a) : Item_func_weekday(pos, a, 0) {}
|
||
|
|
const char *func_name() const override { return "dayname"; }
|
||
|
|
String *val_str(String *str) override;
|
||
|
|
bool get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzydate) override {
|
||
|
|
return get_date_from_string(ltime, fuzzydate);
|
||
|
|
}
|
||
|
|
bool get_time(MYSQL_TIME *ltime) override {
|
||
|
|
return get_time_from_string(ltime);
|
||
|
|
}
|
||
|
|
enum Item_result result_type() const override { return STRING_RESULT; }
|
||
|
|
bool resolve_type(THD *thd) override;
|
||
|
|
bool check_partition_func_processor(uchar *) override { return true; }
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
Abstract class for functions returning "struct timeval".
|
||
|
|
*/
|
||
|
|
class Item_timeval_func : public Item_func {
|
||
|
|
public:
|
||
|
|
explicit Item_timeval_func(const POS &pos) : Item_func(pos) {}
|
||
|
|
|
||
|
|
Item_timeval_func(Item *a) : Item_func(a) {}
|
||
|
|
Item_timeval_func(const POS &pos, Item *a) : Item_func(pos, a) {}
|
||
|
|
/**
|
||
|
|
Return timestamp in "struct timeval" format.
|
||
|
|
@param[out] tm The value is store here.
|
||
|
|
@retval false On success
|
||
|
|
@retval true On error
|
||
|
|
*/
|
||
|
|
virtual bool val_timeval(struct timeval *tm) = 0;
|
||
|
|
longlong val_int() override;
|
||
|
|
double val_real() override;
|
||
|
|
String *val_str(String *str) override;
|
||
|
|
my_decimal *val_decimal(my_decimal *decimal_value) override;
|
||
|
|
bool get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzydate) override {
|
||
|
|
return get_date_from_numeric(ltime, fuzzydate);
|
||
|
|
}
|
||
|
|
bool get_time(MYSQL_TIME *ltime) override {
|
||
|
|
return get_time_from_numeric(ltime);
|
||
|
|
}
|
||
|
|
enum Item_result result_type() const override {
|
||
|
|
return decimals ? DECIMAL_RESULT : INT_RESULT;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_unix_timestamp final : public Item_timeval_func {
|
||
|
|
typedef Item_timeval_func super;
|
||
|
|
|
||
|
|
public:
|
||
|
|
explicit Item_func_unix_timestamp(const POS &pos) : Item_timeval_func(pos) {}
|
||
|
|
|
||
|
|
Item_func_unix_timestamp(Item *a) : Item_timeval_func(a) {}
|
||
|
|
|
||
|
|
Item_func_unix_timestamp(const POS &pos, Item *a)
|
||
|
|
: Item_timeval_func(pos, a) {}
|
||
|
|
|
||
|
|
const char *func_name() const override { return "unix_timestamp"; }
|
||
|
|
|
||
|
|
bool itemize(Parse_context *pc, Item **res) override;
|
||
|
|
enum_monotonicity_info get_monotonicity_info() const override;
|
||
|
|
longlong val_int_endpoint(bool left_endp, bool *incl_endp) override;
|
||
|
|
bool check_partition_func_processor(uchar *) override { return false; }
|
||
|
|
/*
|
||
|
|
UNIX_TIMESTAMP() depends on the current timezone
|
||
|
|
(and thus may not be used as a partitioning function)
|
||
|
|
when its argument is NOT of the TIMESTAMP type.
|
||
|
|
*/
|
||
|
|
bool check_valid_arguments_processor(uchar *) override {
|
||
|
|
return !has_timestamp_args();
|
||
|
|
}
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
collation.set_numeric();
|
||
|
|
const uint8 dec = arg_count == 0 ? 0 : args[0]->datetime_precision();
|
||
|
|
if (dec > 0) {
|
||
|
|
set_data_type_decimal(11 + dec, dec);
|
||
|
|
} else {
|
||
|
|
set_data_type_longlong();
|
||
|
|
max_length = 11;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
bool val_timeval(struct timeval *tm) override;
|
||
|
|
|
||
|
|
bool check_function_as_value_generator(uchar *p_arg) override {
|
||
|
|
/*
|
||
|
|
TODO: Allow UNIX_TIMESTAMP called with an argument to be a part
|
||
|
|
of the expression for a generated column too.
|
||
|
|
*/
|
||
|
|
Check_function_as_value_generator_parameters *func_arg =
|
||
|
|
pointer_cast<Check_function_as_value_generator_parameters *>(p_arg);
|
||
|
|
func_arg->banned_function_name = func_name();
|
||
|
|
return ((func_arg->source == VGS_GENERATED_COLUMN) ||
|
||
|
|
(func_arg->source == VGS_CHECK_CONSTRAINT));
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_time_to_sec final : public Item_int_func {
|
||
|
|
public:
|
||
|
|
Item_func_time_to_sec(const POS &pos, Item *item)
|
||
|
|
: Item_int_func(pos, item) {}
|
||
|
|
longlong val_int() override;
|
||
|
|
const char *func_name() const override { return "time_to_sec"; }
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
fix_char_length(10);
|
||
|
|
maybe_null = true;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
bool check_partition_func_processor(uchar *) override { return false; }
|
||
|
|
bool check_valid_arguments_processor(uchar *) override {
|
||
|
|
return !has_time_args();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
Abstract class for functions returning TIME, DATE, DATETIME types
|
||
|
|
whose data type is known at constructor time.
|
||
|
|
*/
|
||
|
|
class Item_temporal_func : public Item_func {
|
||
|
|
protected:
|
||
|
|
bool check_precision();
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_temporal_func() : Item_func() {}
|
||
|
|
explicit Item_temporal_func(const POS &pos) : Item_func(pos) {}
|
||
|
|
|
||
|
|
Item_temporal_func(Item *a) : Item_func(a) {}
|
||
|
|
Item_temporal_func(const POS &pos, Item *a) : Item_func(pos, a) {}
|
||
|
|
|
||
|
|
Item_temporal_func(const POS &pos, Item *a, Item *b) : Item_func(pos, a, b) {}
|
||
|
|
|
||
|
|
Item_temporal_func(Item *a, Item *b, Item *c) : Item_func(a, b, c) {}
|
||
|
|
Item_temporal_func(const POS &pos, Item *a, Item *b, Item *c)
|
||
|
|
: Item_func(pos, a, b, c) {}
|
||
|
|
Item_temporal_func(const POS &pos, Item *a, Item *b, Item *c, Item *d)
|
||
|
|
: Item_func(pos, a, b, c, d) {}
|
||
|
|
Item_temporal_func(const POS &pos, PT_item_list *list)
|
||
|
|
: Item_func(pos, list) {}
|
||
|
|
|
||
|
|
Item_result result_type() const override { return STRING_RESULT; }
|
||
|
|
const CHARSET_INFO *charset_for_protocol() const override {
|
||
|
|
return &my_charset_bin;
|
||
|
|
}
|
||
|
|
Field *tmp_table_field(TABLE *table) override {
|
||
|
|
return tmp_table_field_from_field_type(table, 0);
|
||
|
|
}
|
||
|
|
uint time_precision() override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return decimals;
|
||
|
|
}
|
||
|
|
uint datetime_precision() override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return decimals;
|
||
|
|
}
|
||
|
|
void print(const THD *thd, String *str,
|
||
|
|
enum_query_type query_type) const override;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
Abstract class for functions returning TIME, DATE, DATETIME or string values,
|
||
|
|
whose data type depends on parameters and is set at fix_field time.
|
||
|
|
*/
|
||
|
|
class Item_temporal_hybrid_func : public Item_str_func {
|
||
|
|
protected:
|
||
|
|
sql_mode_t sql_mode; // sql_mode value is cached here in resolve_type()
|
||
|
|
String ascii_buf; // Conversion buffer
|
||
|
|
/**
|
||
|
|
Get "native" temporal value as MYSQL_TIME
|
||
|
|
@param[out] ltime The value is stored here.
|
||
|
|
@param[in] fuzzy_date Date flags.
|
||
|
|
@retval false On success.
|
||
|
|
@retval true On error.
|
||
|
|
*/
|
||
|
|
virtual bool val_datetime(MYSQL_TIME *ltime, my_time_flags_t fuzzy_date) = 0;
|
||
|
|
type_conversion_status save_in_field_inner(Field *field,
|
||
|
|
bool no_conversions) override;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_temporal_hybrid_func(Item *a, Item *b)
|
||
|
|
: Item_str_func(a, b), sql_mode(0) {}
|
||
|
|
Item_temporal_hybrid_func(const POS &pos, Item *a, Item *b)
|
||
|
|
: Item_str_func(pos, a, b), sql_mode(0) {}
|
||
|
|
|
||
|
|
Item_result result_type() const override { return STRING_RESULT; }
|
||
|
|
const CHARSET_INFO *charset_for_protocol() const override {
|
||
|
|
/*
|
||
|
|
Can return TIME, DATE, DATETIME or VARCHAR depending on arguments.
|
||
|
|
Send using "binary" when TIME, DATE or DATETIME,
|
||
|
|
or using collation.collation when VARCHAR
|
||
|
|
(which is fixed from @collation_connection in resolve_type()).
|
||
|
|
*/
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
return data_type() == MYSQL_TYPE_STRING ? collation.collation
|
||
|
|
: &my_charset_bin;
|
||
|
|
}
|
||
|
|
Field *tmp_table_field(TABLE *table) override {
|
||
|
|
return tmp_table_field_from_field_type(table, 0);
|
||
|
|
}
|
||
|
|
longlong val_int() override { return val_int_from_decimal(); }
|
||
|
|
double val_real() override { return val_real_from_decimal(); }
|
||
|
|
my_decimal *val_decimal(my_decimal *decimal_value) override;
|
||
|
|
/**
|
||
|
|
Return string value in ASCII character set.
|
||
|
|
*/
|
||
|
|
String *val_str_ascii(String *str) override;
|
||
|
|
/**
|
||
|
|
Return string value in @@character_set_connection.
|
||
|
|
*/
|
||
|
|
String *val_str(String *str) override {
|
||
|
|
return val_str_from_val_str_ascii(str, &ascii_buf);
|
||
|
|
}
|
||
|
|
bool get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzydate) override;
|
||
|
|
bool get_time(MYSQL_TIME *ltime) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
This can't be a Item_str_func, because the val_real() functions are special
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
Abstract class for functions returning DATE values.
|
||
|
|
*/
|
||
|
|
class Item_date_func : public Item_temporal_func {
|
||
|
|
protected:
|
||
|
|
type_conversion_status save_in_field_inner(Field *field, bool) override {
|
||
|
|
return save_date_in_field(field);
|
||
|
|
}
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_date_func() : Item_temporal_func() { set_data_type_date(); }
|
||
|
|
explicit Item_date_func(const POS &pos) : Item_temporal_func(pos) {
|
||
|
|
set_data_type_date();
|
||
|
|
}
|
||
|
|
Item_date_func(Item *a) : Item_temporal_func(a) { set_data_type_date(); }
|
||
|
|
Item_date_func(const POS &pos, Item *a) : Item_temporal_func(pos, a) {
|
||
|
|
set_data_type_date();
|
||
|
|
}
|
||
|
|
Item_date_func(const POS &pos, Item *a, Item *b)
|
||
|
|
: Item_temporal_func(pos, a, b) {
|
||
|
|
set_data_type_date();
|
||
|
|
}
|
||
|
|
bool get_time(MYSQL_TIME *ltime) override {
|
||
|
|
return get_time_from_date(ltime);
|
||
|
|
}
|
||
|
|
String *val_str(String *str) override { return val_string_from_date(str); }
|
||
|
|
longlong val_int() override { return val_int_from_date(); }
|
||
|
|
longlong val_date_temporal() override;
|
||
|
|
double val_real() override { return static_cast<double>(val_int()); }
|
||
|
|
const char *func_name() const override { return "date"; }
|
||
|
|
enum Functype functype() const override { return DATE_FUNC; }
|
||
|
|
bool resolve_type(THD *) override { return false; }
|
||
|
|
my_decimal *val_decimal(my_decimal *decimal_value) override {
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
return val_decimal_from_date(decimal_value);
|
||
|
|
}
|
||
|
|
// All date functions must implement get_date()
|
||
|
|
// to avoid use of generic Item::get_date()
|
||
|
|
// which converts to string and then parses the string as DATE.
|
||
|
|
virtual bool get_date(MYSQL_TIME *res,
|
||
|
|
my_time_flags_t fuzzy_date) override = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
Abstract class for functions returning DATETIME values.
|
||
|
|
*/
|
||
|
|
class Item_datetime_func : public Item_temporal_func {
|
||
|
|
protected:
|
||
|
|
type_conversion_status save_in_field_inner(Field *field, bool) override {
|
||
|
|
return save_date_in_field(field);
|
||
|
|
}
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_datetime_func() : Item_temporal_func() {
|
||
|
|
set_data_type(MYSQL_TYPE_DATETIME);
|
||
|
|
}
|
||
|
|
Item_datetime_func(const POS &pos) : Item_temporal_func(pos) {
|
||
|
|
set_data_type(MYSQL_TYPE_DATETIME);
|
||
|
|
}
|
||
|
|
Item_datetime_func(Item *a) : Item_temporal_func(a) {
|
||
|
|
set_data_type(MYSQL_TYPE_DATETIME);
|
||
|
|
}
|
||
|
|
Item_datetime_func(const POS &pos, Item *a) : Item_temporal_func(pos, a) {
|
||
|
|
set_data_type(MYSQL_TYPE_DATETIME);
|
||
|
|
}
|
||
|
|
Item_datetime_func(const POS &pos, Item *a, Item *b)
|
||
|
|
: Item_temporal_func(pos, a, b) {
|
||
|
|
set_data_type(MYSQL_TYPE_DATETIME);
|
||
|
|
}
|
||
|
|
Item_datetime_func(Item *a, Item *b, Item *c) : Item_temporal_func(a, b, c) {
|
||
|
|
set_data_type(MYSQL_TYPE_DATETIME);
|
||
|
|
}
|
||
|
|
Item_datetime_func(const POS &pos, Item *a, Item *b, Item *c)
|
||
|
|
: Item_temporal_func(pos, a, b, c) {
|
||
|
|
set_data_type(MYSQL_TYPE_DATETIME);
|
||
|
|
}
|
||
|
|
Item_datetime_func(const POS &pos, Item *a, Item *b, Item *c, Item *d)
|
||
|
|
: Item_temporal_func(pos, a, b, c, d) {
|
||
|
|
set_data_type(MYSQL_TYPE_DATETIME);
|
||
|
|
}
|
||
|
|
Item_datetime_func(const POS &pos, PT_item_list *list)
|
||
|
|
: Item_temporal_func(pos, list) {
|
||
|
|
set_data_type(MYSQL_TYPE_DATETIME);
|
||
|
|
}
|
||
|
|
|
||
|
|
double val_real() override { return val_real_from_decimal(); }
|
||
|
|
String *val_str(String *str) override {
|
||
|
|
return val_string_from_datetime(str);
|
||
|
|
}
|
||
|
|
longlong val_int() override { return val_int_from_datetime(); }
|
||
|
|
longlong val_date_temporal() override;
|
||
|
|
my_decimal *val_decimal(my_decimal *decimal_value) override {
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
return val_decimal_from_date(decimal_value);
|
||
|
|
}
|
||
|
|
bool get_time(MYSQL_TIME *ltime) override {
|
||
|
|
return get_time_from_datetime(ltime);
|
||
|
|
}
|
||
|
|
// All datetime functions must implement get_date()
|
||
|
|
// to avoid use of generic Item::get_date()
|
||
|
|
// which converts to string and then parses the string as DATETIME.
|
||
|
|
virtual bool get_date(MYSQL_TIME *res,
|
||
|
|
my_time_flags_t fuzzy_date) override = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
Abstract class for functions returning TIME values.
|
||
|
|
*/
|
||
|
|
class Item_time_func : public Item_temporal_func {
|
||
|
|
protected:
|
||
|
|
type_conversion_status save_in_field_inner(Field *field, bool) override {
|
||
|
|
return save_time_in_field(field);
|
||
|
|
}
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_time_func() : Item_temporal_func() { set_data_type(MYSQL_TYPE_TIME); }
|
||
|
|
explicit Item_time_func(const POS &pos) : Item_temporal_func(pos) {
|
||
|
|
set_data_type(MYSQL_TYPE_TIME);
|
||
|
|
}
|
||
|
|
Item_time_func(Item *a) : Item_temporal_func(a) {
|
||
|
|
set_data_type(MYSQL_TYPE_TIME);
|
||
|
|
}
|
||
|
|
Item_time_func(const POS &pos, Item *a) : Item_temporal_func(pos, a) {
|
||
|
|
set_data_type(MYSQL_TYPE_TIME);
|
||
|
|
}
|
||
|
|
Item_time_func(const POS &pos, Item *a, Item *b)
|
||
|
|
: Item_temporal_func(pos, a, b) {
|
||
|
|
set_data_type(MYSQL_TYPE_TIME);
|
||
|
|
}
|
||
|
|
Item_time_func(const POS &pos, Item *a, Item *b, Item *c)
|
||
|
|
: Item_temporal_func(pos, a, b, c) {
|
||
|
|
set_data_type(MYSQL_TYPE_TIME);
|
||
|
|
}
|
||
|
|
double val_real() override { return val_real_from_decimal(); }
|
||
|
|
my_decimal *val_decimal(my_decimal *decimal_value) override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return val_decimal_from_time(decimal_value);
|
||
|
|
}
|
||
|
|
longlong val_int() override { return val_int_from_time(); }
|
||
|
|
longlong val_time_temporal() override;
|
||
|
|
bool get_date(MYSQL_TIME *res, my_time_flags_t) override {
|
||
|
|
return get_date_from_time(res);
|
||
|
|
}
|
||
|
|
String *val_str(String *str) override { return val_string_from_time(str); }
|
||
|
|
// All time functions must implement get_time()
|
||
|
|
// to avoid use of generic Item::get_time()
|
||
|
|
// which converts to string and then parses the string as TIME.
|
||
|
|
virtual bool get_time(MYSQL_TIME *res) override = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
Cache for MYSQL_TIME value with various representations.
|
||
|
|
|
||
|
|
- MYSQL_TIME representation (time) is initialized during set_XXX().
|
||
|
|
- Packed representation (time_packed) is also initialized during set_XXX().
|
||
|
|
- String representation (string_buff) is also initialized during set_XXX();
|
||
|
|
*/
|
||
|
|
class MYSQL_TIME_cache {
|
||
|
|
MYSQL_TIME time; ///< MYSQL_TIME representation
|
||
|
|
longlong time_packed; ///< packed representation
|
||
|
|
char string_buff[MAX_DATE_STRING_REP_LENGTH]; ///< string representation
|
||
|
|
uint string_length; ///< length of string
|
||
|
|
uint8 dec; ///< Number of decimals
|
||
|
|
|
||
|
|
/**
|
||
|
|
Store MYSQL_TIME representation into the given MYSQL_TIME variable.
|
||
|
|
*/
|
||
|
|
void get_TIME(MYSQL_TIME *ltime) const {
|
||
|
|
DBUG_ASSERT(time.time_type != MYSQL_TIMESTAMP_NONE);
|
||
|
|
*ltime = time;
|
||
|
|
}
|
||
|
|
|
||
|
|
public:
|
||
|
|
MYSQL_TIME_cache() : time_packed(0), string_length(0), dec(0) {
|
||
|
|
time.time_type = MYSQL_TIMESTAMP_NONE;
|
||
|
|
string_buff[0] = '\0';
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
Set time and time_packed from a DATE value.
|
||
|
|
*/
|
||
|
|
void set_date(MYSQL_TIME *ltime);
|
||
|
|
/**
|
||
|
|
Set time and time_packed from a TIME value.
|
||
|
|
*/
|
||
|
|
void set_time(MYSQL_TIME *ltime, uint8 dec_arg);
|
||
|
|
/**
|
||
|
|
Set time and time_packed from a DATETIME value.
|
||
|
|
*/
|
||
|
|
void set_datetime(MYSQL_TIME *ltime, uint8 dec_arg);
|
||
|
|
/**
|
||
|
|
Set time and time_packed according to DATE value
|
||
|
|
in "struct timeval" representation and its time zone.
|
||
|
|
*/
|
||
|
|
void set_date(struct timeval tv, Time_zone *tz);
|
||
|
|
/**
|
||
|
|
Set time and time_packed according to TIME value
|
||
|
|
in "struct timeval" representation and its time zone.
|
||
|
|
*/
|
||
|
|
void set_time(struct timeval tv, uint8 dec_arg, Time_zone *tz);
|
||
|
|
/**
|
||
|
|
Set time and time_packed according to DATETIME value
|
||
|
|
in "struct timeval" representation and its time zone.
|
||
|
|
*/
|
||
|
|
void set_datetime(struct timeval tv, uint8 dec_arg, Time_zone *tz);
|
||
|
|
/**
|
||
|
|
Test if cached value is equal to another MYSQL_TIME_cache value.
|
||
|
|
*/
|
||
|
|
bool eq(const MYSQL_TIME_cache &tm) const {
|
||
|
|
return val_packed() == tm.val_packed();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Return number of decimal digits.
|
||
|
|
*/
|
||
|
|
uint8 decimals() const {
|
||
|
|
DBUG_ASSERT(time.time_type != MYSQL_TIMESTAMP_NONE);
|
||
|
|
return dec;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Return packed representation.
|
||
|
|
*/
|
||
|
|
longlong val_packed() const {
|
||
|
|
DBUG_ASSERT(time.time_type != MYSQL_TIMESTAMP_NONE);
|
||
|
|
return time_packed;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
Store MYSQL_TIME representation into the given date/datetime variable
|
||
|
|
checking date flags.
|
||
|
|
*/
|
||
|
|
bool get_date(MYSQL_TIME *ltime, uint fuzzyflags) const;
|
||
|
|
/**
|
||
|
|
Store MYSQL_TIME representation into the given time variable.
|
||
|
|
*/
|
||
|
|
bool get_time(MYSQL_TIME *ltime) const {
|
||
|
|
get_TIME(ltime);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
Return pointer to MYSQL_TIME representation.
|
||
|
|
*/
|
||
|
|
MYSQL_TIME *get_TIME_ptr() {
|
||
|
|
DBUG_ASSERT(time.time_type != MYSQL_TIMESTAMP_NONE);
|
||
|
|
return &time;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
Store string representation into String.
|
||
|
|
*/
|
||
|
|
String *val_str(String *str);
|
||
|
|
/**
|
||
|
|
Return C string representation.
|
||
|
|
*/
|
||
|
|
const char *cptr() const { return string_buff; }
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
DATE'2010-01-01'
|
||
|
|
*/
|
||
|
|
class Item_date_literal final : public Item_date_func {
|
||
|
|
MYSQL_TIME_cache cached_time;
|
||
|
|
|
||
|
|
public:
|
||
|
|
/**
|
||
|
|
Constructor for Item_date_literal.
|
||
|
|
@param ltime DATE value.
|
||
|
|
*/
|
||
|
|
Item_date_literal(MYSQL_TIME *ltime) {
|
||
|
|
cached_time.set_date(ltime);
|
||
|
|
set_data_type_date();
|
||
|
|
fixed = true;
|
||
|
|
}
|
||
|
|
const char *func_name() const override { return "date_literal"; }
|
||
|
|
void print(const THD *thd, String *str,
|
||
|
|
enum_query_type query_type) const override;
|
||
|
|
longlong val_date_temporal() override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return cached_time.val_packed();
|
||
|
|
}
|
||
|
|
bool get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzy_date) override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return cached_time.get_date(ltime, fuzzy_date);
|
||
|
|
}
|
||
|
|
String *val_str(String *str) override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return cached_time.val_str(str);
|
||
|
|
}
|
||
|
|
bool resolve_type(THD *) override { return false; }
|
||
|
|
bool check_partition_func_processor(uchar *) override { return false; }
|
||
|
|
bool basic_const_item() const override { return true; }
|
||
|
|
table_map used_tables() const override { return 0; }
|
||
|
|
table_map not_null_tables() const override { return used_tables(); }
|
||
|
|
void cleanup() override {
|
||
|
|
// See Item_basic_const::cleanup()
|
||
|
|
if (orig_name.is_set()) item_name = orig_name;
|
||
|
|
}
|
||
|
|
bool eq(const Item *item, bool binary_cmp) const override;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
TIME'10:10:10'
|
||
|
|
*/
|
||
|
|
class Item_time_literal final : public Item_time_func {
|
||
|
|
MYSQL_TIME_cache cached_time;
|
||
|
|
|
||
|
|
public:
|
||
|
|
/**
|
||
|
|
Constructor for Item_time_literal.
|
||
|
|
@param ltime TIME value.
|
||
|
|
@param dec_arg number of fractional digits in ltime.
|
||
|
|
*/
|
||
|
|
Item_time_literal(MYSQL_TIME *ltime, uint dec_arg) {
|
||
|
|
set_data_type_time(MY_MIN(dec_arg, DATETIME_MAX_DECIMALS));
|
||
|
|
cached_time.set_time(ltime, decimals);
|
||
|
|
fixed = true;
|
||
|
|
}
|
||
|
|
const char *func_name() const override { return "time_literal"; }
|
||
|
|
void print(const THD *thd, String *str,
|
||
|
|
enum_query_type query_type) const override;
|
||
|
|
longlong val_time_temporal() override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return cached_time.val_packed();
|
||
|
|
}
|
||
|
|
bool get_time(MYSQL_TIME *ltime) override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return cached_time.get_time(ltime);
|
||
|
|
}
|
||
|
|
String *val_str(String *str) override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return cached_time.val_str(str);
|
||
|
|
}
|
||
|
|
bool resolve_type(THD *) override { return false; }
|
||
|
|
bool check_partition_func_processor(uchar *) override { return false; }
|
||
|
|
bool basic_const_item() const override { return true; }
|
||
|
|
table_map used_tables() const override { return 0; }
|
||
|
|
table_map not_null_tables() const override { return used_tables(); }
|
||
|
|
void cleanup() override {
|
||
|
|
// See Item_basic_const::cleanup()
|
||
|
|
if (orig_name.is_set()) item_name = orig_name;
|
||
|
|
}
|
||
|
|
bool eq(const Item *item, bool binary_cmp) const override;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
TIMESTAMP'2001-01-01 10:20:30'
|
||
|
|
*/
|
||
|
|
class Item_datetime_literal final : public Item_datetime_func {
|
||
|
|
MYSQL_TIME_cache cached_time;
|
||
|
|
|
||
|
|
public:
|
||
|
|
/**
|
||
|
|
Constructor for Item_datetime_literal.
|
||
|
|
@param ltime DATETIME value.
|
||
|
|
@param dec_arg number of fractional digits in ltime.
|
||
|
|
*/
|
||
|
|
Item_datetime_literal(MYSQL_TIME *ltime, uint dec_arg) {
|
||
|
|
set_data_type_datetime(MY_MIN(dec_arg, DATETIME_MAX_DECIMALS));
|
||
|
|
cached_time.set_datetime(ltime, decimals);
|
||
|
|
fixed = true;
|
||
|
|
}
|
||
|
|
const char *func_name() const override { return "datetime_literal"; }
|
||
|
|
enum Functype functype() const override { return DATETIME_LITERAL; }
|
||
|
|
void print(const THD *thd, String *str,
|
||
|
|
enum_query_type query_type) const override;
|
||
|
|
longlong val_date_temporal() override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return cached_time.val_packed();
|
||
|
|
}
|
||
|
|
bool get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzy_date) override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return cached_time.get_date(ltime, fuzzy_date);
|
||
|
|
}
|
||
|
|
String *val_str(String *str) override {
|
||
|
|
DBUG_ASSERT(fixed);
|
||
|
|
return cached_time.val_str(str);
|
||
|
|
}
|
||
|
|
bool resolve_type(THD *) override { return false; }
|
||
|
|
bool check_partition_func_processor(uchar *) override { return false; }
|
||
|
|
bool basic_const_item() const override { return true; }
|
||
|
|
table_map used_tables() const override { return 0; }
|
||
|
|
table_map not_null_tables() const override { return used_tables(); }
|
||
|
|
void cleanup() override {
|
||
|
|
// See Item_basic_const::cleanup()
|
||
|
|
if (orig_name.is_set()) item_name = orig_name;
|
||
|
|
}
|
||
|
|
bool eq(const Item *item, bool binary_cmp) const override;
|
||
|
|
};
|
||
|
|
|
||
|
|
/// Abstract CURTIME function. Children should define what time zone is used.
|
||
|
|
class Item_func_curtime : public Item_time_func {
|
||
|
|
typedef Item_time_func super;
|
||
|
|
|
||
|
|
MYSQL_TIME_cache cached_time; // Initialized in resolve_type()
|
||
|
|
protected:
|
||
|
|
// Abstract method that defines which time zone is used for conversion.
|
||
|
|
virtual Time_zone *time_zone() = 0;
|
||
|
|
|
||
|
|
public:
|
||
|
|
/**
|
||
|
|
Constructor for Item_func_curtime.
|
||
|
|
@param pos Position of token in the parser.
|
||
|
|
@param dec_arg Number of fractional digits.
|
||
|
|
*/
|
||
|
|
Item_func_curtime(const POS &pos, uint8 dec_arg) : Item_time_func(pos) {
|
||
|
|
decimals = dec_arg;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool itemize(Parse_context *pc, Item **res) override;
|
||
|
|
|
||
|
|
bool resolve_type(THD *thd) override;
|
||
|
|
longlong val_time_temporal() override {
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
return cached_time.val_packed();
|
||
|
|
}
|
||
|
|
bool get_time(MYSQL_TIME *ltime) override {
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
return cached_time.get_time(ltime);
|
||
|
|
}
|
||
|
|
String *val_str(String *) override {
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
return cached_time.val_str(&str_value);
|
||
|
|
}
|
||
|
|
bool check_function_as_value_generator(uchar *checker_args) override {
|
||
|
|
Check_function_as_value_generator_parameters *func_arg =
|
||
|
|
pointer_cast<Check_function_as_value_generator_parameters *>(
|
||
|
|
checker_args);
|
||
|
|
func_arg->banned_function_name = func_name();
|
||
|
|
return ((func_arg->source == VGS_GENERATED_COLUMN) ||
|
||
|
|
(func_arg->source == VGS_CHECK_CONSTRAINT));
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_curtime_local final : public Item_func_curtime {
|
||
|
|
protected:
|
||
|
|
Time_zone *time_zone() override;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_curtime_local(const POS &pos, uint8 dec_arg)
|
||
|
|
: Item_func_curtime(pos, dec_arg) {}
|
||
|
|
const char *func_name() const override { return "curtime"; }
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_curtime_utc final : public Item_func_curtime {
|
||
|
|
protected:
|
||
|
|
Time_zone *time_zone() override;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_curtime_utc(const POS &pos, uint8 dec_arg)
|
||
|
|
: Item_func_curtime(pos, dec_arg) {}
|
||
|
|
const char *func_name() const override { return "utc_time"; }
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
Abstract CURDATE function.
|
||
|
|
|
||
|
|
@sa Item_func_curtime
|
||
|
|
*/
|
||
|
|
class Item_func_curdate : public Item_date_func {
|
||
|
|
typedef Item_date_func super;
|
||
|
|
|
||
|
|
MYSQL_TIME_cache cached_time; // Initialized in resolve_type()
|
||
|
|
protected:
|
||
|
|
virtual Time_zone *time_zone() = 0;
|
||
|
|
|
||
|
|
public:
|
||
|
|
explicit Item_func_curdate(const POS &pos) : Item_date_func(pos) {}
|
||
|
|
|
||
|
|
bool itemize(Parse_context *pc, Item **res) override;
|
||
|
|
|
||
|
|
bool resolve_type(THD *) override;
|
||
|
|
longlong val_date_temporal() override {
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
return cached_time.val_packed();
|
||
|
|
}
|
||
|
|
bool get_date(MYSQL_TIME *res, my_time_flags_t) override {
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
return cached_time.get_time(res);
|
||
|
|
}
|
||
|
|
String *val_str(String *) override {
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
return cached_time.val_str(&str_value);
|
||
|
|
}
|
||
|
|
bool check_function_as_value_generator(uchar *checker_args) override {
|
||
|
|
Check_function_as_value_generator_parameters *func_arg =
|
||
|
|
pointer_cast<Check_function_as_value_generator_parameters *>(
|
||
|
|
checker_args);
|
||
|
|
func_arg->banned_function_name = func_name();
|
||
|
|
return ((func_arg->source == VGS_GENERATED_COLUMN) ||
|
||
|
|
(func_arg->source == VGS_CHECK_CONSTRAINT));
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_curdate_local final : public Item_func_curdate {
|
||
|
|
protected:
|
||
|
|
Time_zone *time_zone() override;
|
||
|
|
|
||
|
|
public:
|
||
|
|
explicit Item_func_curdate_local(const POS &pos) : Item_func_curdate(pos) {}
|
||
|
|
const char *func_name() const override { return "curdate"; }
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_curdate_utc final : public Item_func_curdate {
|
||
|
|
protected:
|
||
|
|
Time_zone *time_zone() override;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_curdate_utc(const POS &pos) : Item_func_curdate(pos) {}
|
||
|
|
const char *func_name() const override { return "utc_date"; }
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
Abstract CURRENT_TIMESTAMP function.
|
||
|
|
|
||
|
|
@sa Item_func_curtime
|
||
|
|
*/
|
||
|
|
class Item_func_now : public Item_datetime_func {
|
||
|
|
MYSQL_TIME_cache cached_time;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
virtual Time_zone *time_zone() = 0;
|
||
|
|
type_conversion_status save_in_field_inner(Field *to,
|
||
|
|
bool no_conversions) override;
|
||
|
|
|
||
|
|
public:
|
||
|
|
/**
|
||
|
|
Constructor for Item_func_now.
|
||
|
|
@param dec_arg Number of fractional digits.
|
||
|
|
*/
|
||
|
|
Item_func_now(uint8 dec_arg) : Item_datetime_func() { decimals = dec_arg; }
|
||
|
|
Item_func_now(const POS &pos, uint8 dec_arg) : Item_datetime_func(pos) {
|
||
|
|
decimals = dec_arg;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool resolve_type(THD *) override;
|
||
|
|
longlong val_date_temporal() override {
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
return cached_time.val_packed();
|
||
|
|
}
|
||
|
|
bool get_date(MYSQL_TIME *res, my_time_flags_t) override {
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
return cached_time.get_time(res);
|
||
|
|
}
|
||
|
|
String *val_str(String *) override {
|
||
|
|
DBUG_ASSERT(fixed == 1);
|
||
|
|
return cached_time.val_str(&str_value);
|
||
|
|
}
|
||
|
|
bool check_function_as_value_generator(uchar *checker_args) override {
|
||
|
|
Check_function_as_value_generator_parameters *func_arg =
|
||
|
|
pointer_cast<Check_function_as_value_generator_parameters *>(
|
||
|
|
checker_args);
|
||
|
|
func_arg->banned_function_name = func_name();
|
||
|
|
return ((func_arg->source == VGS_GENERATED_COLUMN) ||
|
||
|
|
(func_arg->source == VGS_CHECK_CONSTRAINT));
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_now_local : public Item_func_now {
|
||
|
|
protected:
|
||
|
|
Time_zone *time_zone() override;
|
||
|
|
|
||
|
|
public:
|
||
|
|
/**
|
||
|
|
Stores the query start time in a field, truncating to the field's number
|
||
|
|
of fractional second digits.
|
||
|
|
|
||
|
|
@param field The field to store in.
|
||
|
|
*/
|
||
|
|
static void store_in(Field *field);
|
||
|
|
|
||
|
|
Item_func_now_local(uint8 dec_arg) : Item_func_now(dec_arg) {}
|
||
|
|
Item_func_now_local(const POS &pos, uint8 dec_arg)
|
||
|
|
: Item_func_now(pos, dec_arg) {}
|
||
|
|
|
||
|
|
const char *func_name() const override { return "now"; }
|
||
|
|
enum Functype functype() const override { return NOW_FUNC; }
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_now_utc final : public Item_func_now {
|
||
|
|
typedef Item_func_now super;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
Time_zone *time_zone() override;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_now_utc(const POS &pos, uint8 dec_arg)
|
||
|
|
: Item_func_now(pos, dec_arg) {}
|
||
|
|
|
||
|
|
bool itemize(Parse_context *pc, Item **res) override;
|
||
|
|
|
||
|
|
const char *func_name() const override { return "utc_timestamp"; }
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
SYSDATE() is like NOW(), but always uses the real current time, not the
|
||
|
|
query_start(). This matches the Oracle behavior.
|
||
|
|
*/
|
||
|
|
class Item_func_sysdate_local final : public Item_datetime_func {
|
||
|
|
public:
|
||
|
|
Item_func_sysdate_local(uint8 dec_arg) : Item_datetime_func() {
|
||
|
|
decimals = dec_arg;
|
||
|
|
}
|
||
|
|
const char *func_name() const override { return "sysdate"; }
|
||
|
|
bool resolve_type(THD *) override;
|
||
|
|
bool get_date(MYSQL_TIME *res, my_time_flags_t fuzzy_date) override;
|
||
|
|
/**
|
||
|
|
This function is non-deterministic and hence depends on the 'RAND'
|
||
|
|
pseudo-table.
|
||
|
|
|
||
|
|
@retval Always RAND_TABLE_BIT
|
||
|
|
*/
|
||
|
|
table_map get_initial_pseudo_tables() const override {
|
||
|
|
return RAND_TABLE_BIT;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_from_days final : public Item_date_func {
|
||
|
|
public:
|
||
|
|
Item_func_from_days(const POS &pos, Item *a) : Item_date_func(pos, a) {}
|
||
|
|
const char *func_name() const override { return "from_days"; }
|
||
|
|
bool get_date(MYSQL_TIME *res, my_time_flags_t fuzzy_date) override;
|
||
|
|
bool check_partition_func_processor(uchar *) override { return false; }
|
||
|
|
bool check_valid_arguments_processor(uchar *) override {
|
||
|
|
return has_date_args() || has_time_args();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_date_format final : public Item_str_func {
|
||
|
|
int fixed_length;
|
||
|
|
const bool is_time_format;
|
||
|
|
String value;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_date_format(const POS &pos, Item *a, Item *b,
|
||
|
|
bool is_time_format_arg = false)
|
||
|
|
: Item_str_func(pos, a, b), is_time_format(is_time_format_arg) {}
|
||
|
|
String *val_str(String *str) override;
|
||
|
|
const char *func_name() const override {
|
||
|
|
return is_time_format ? "time_format" : "date_format";
|
||
|
|
}
|
||
|
|
bool resolve_type(THD *thd) override;
|
||
|
|
uint format_length(const String *format);
|
||
|
|
bool eq(const Item *item, bool binary_cmp) const override;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_from_unixtime final : public Item_datetime_func {
|
||
|
|
public:
|
||
|
|
Item_func_from_unixtime(const POS &pos, Item *a)
|
||
|
|
: Item_datetime_func(pos, a) {}
|
||
|
|
const char *func_name() const override { return "from_unixtime"; }
|
||
|
|
bool resolve_type(THD *thd) override;
|
||
|
|
bool get_date(MYSQL_TIME *res, my_time_flags_t fuzzy_date) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
This class represents CONVERT_TZ() function.
|
||
|
|
The important fact about this function that it is handled in special way.
|
||
|
|
When such function is met in expression time_zone system tables are added
|
||
|
|
to global list of tables to open, so later those already opened and locked
|
||
|
|
tables can be used during this function calculation for loading time zone
|
||
|
|
descriptions.
|
||
|
|
*/
|
||
|
|
class Item_func_convert_tz final : public Item_datetime_func {
|
||
|
|
/*
|
||
|
|
If time zone parameters are constants we are caching objects that
|
||
|
|
represent them (we use separate from_tz_cached/to_tz_cached members
|
||
|
|
to indicate this fact, since NULL is legal value for from_tz/to_tz
|
||
|
|
members.
|
||
|
|
*/
|
||
|
|
bool from_tz_cached, to_tz_cached;
|
||
|
|
Time_zone *from_tz, *to_tz;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_convert_tz(const POS &pos, Item *a, Item *b, Item *c)
|
||
|
|
: Item_datetime_func(pos, a, b, c), from_tz_cached(0), to_tz_cached(0) {}
|
||
|
|
const char *func_name() const override { return "convert_tz"; }
|
||
|
|
bool resolve_type(THD *) override;
|
||
|
|
bool get_date(MYSQL_TIME *res, my_time_flags_t fuzzy_date) override;
|
||
|
|
void cleanup() override;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_sec_to_time final : public Item_time_func {
|
||
|
|
public:
|
||
|
|
Item_func_sec_to_time(const POS &pos, Item *item)
|
||
|
|
: Item_time_func(pos, item) {}
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
set_data_type_time(MY_MIN(args[0]->decimals, DATETIME_MAX_DECIMALS));
|
||
|
|
maybe_null = true;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
const char *func_name() const override { return "sec_to_time"; }
|
||
|
|
bool get_time(MYSQL_TIME *ltime) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern const char *interval_names[];
|
||
|
|
|
||
|
|
class Item_date_add_interval final : public Item_temporal_hybrid_func {
|
||
|
|
String value;
|
||
|
|
bool get_date_internal(MYSQL_TIME *res, my_time_flags_t fuzzy_date);
|
||
|
|
bool get_time_internal(MYSQL_TIME *res);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
bool val_datetime(MYSQL_TIME *ltime, my_time_flags_t fuzzy_date) override;
|
||
|
|
|
||
|
|
public:
|
||
|
|
const interval_type int_type; // keep it public
|
||
|
|
const bool date_sub_interval; // keep it public
|
||
|
|
Item_date_add_interval(const POS &pos, Item *a, Item *b,
|
||
|
|
interval_type type_arg, bool neg_arg)
|
||
|
|
: Item_temporal_hybrid_func(pos, a, b),
|
||
|
|
int_type(type_arg),
|
||
|
|
date_sub_interval(neg_arg) {}
|
||
|
|
/**
|
||
|
|
POS-less ctor for post-parse construction with implicit addition to THD's
|
||
|
|
free_list (see Item::Item() no-argument ctor).
|
||
|
|
*/
|
||
|
|
Item_date_add_interval(Item *a, Item *b, interval_type type_arg, bool neg_arg)
|
||
|
|
: Item_temporal_hybrid_func(a, b),
|
||
|
|
int_type(type_arg),
|
||
|
|
date_sub_interval(neg_arg) {}
|
||
|
|
const char *func_name() const override { return "date_add_interval"; }
|
||
|
|
enum Functype functype() const override { return DATEADD_FUNC; }
|
||
|
|
bool resolve_type(THD *) override;
|
||
|
|
bool eq(const Item *item, bool binary_cmp) const override;
|
||
|
|
void print(const THD *thd, String *str,
|
||
|
|
enum_query_type query_type) const override;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_extract final : public Item_int_func {
|
||
|
|
bool date_value;
|
||
|
|
|
||
|
|
public:
|
||
|
|
const interval_type int_type; // keep it public
|
||
|
|
Item_extract(const POS &pos, interval_type type_arg, Item *a)
|
||
|
|
: Item_int_func(pos, a), int_type(type_arg) {}
|
||
|
|
longlong val_int() override;
|
||
|
|
enum Functype functype() const override { return EXTRACT_FUNC; }
|
||
|
|
const char *func_name() const override { return "extract"; }
|
||
|
|
bool resolve_type(THD *) override;
|
||
|
|
bool eq(const Item *item, bool binary_cmp) const override;
|
||
|
|
void print(const THD *thd, String *str,
|
||
|
|
enum_query_type query_type) const override;
|
||
|
|
bool check_partition_func_processor(uchar *) override { return false; }
|
||
|
|
bool check_valid_arguments_processor(uchar *) override {
|
||
|
|
switch (int_type) {
|
||
|
|
case INTERVAL_YEAR:
|
||
|
|
case INTERVAL_YEAR_MONTH:
|
||
|
|
case INTERVAL_QUARTER:
|
||
|
|
case INTERVAL_MONTH:
|
||
|
|
/* case INTERVAL_WEEK: Not allowed as partitioning function, bug#57071 */
|
||
|
|
case INTERVAL_DAY:
|
||
|
|
return !has_date_args();
|
||
|
|
case INTERVAL_DAY_HOUR:
|
||
|
|
case INTERVAL_DAY_MINUTE:
|
||
|
|
case INTERVAL_DAY_SECOND:
|
||
|
|
case INTERVAL_DAY_MICROSECOND:
|
||
|
|
return !has_datetime_args();
|
||
|
|
case INTERVAL_HOUR:
|
||
|
|
case INTERVAL_HOUR_MINUTE:
|
||
|
|
case INTERVAL_HOUR_SECOND:
|
||
|
|
case INTERVAL_MINUTE:
|
||
|
|
case INTERVAL_MINUTE_SECOND:
|
||
|
|
case INTERVAL_SECOND:
|
||
|
|
case INTERVAL_MICROSECOND:
|
||
|
|
case INTERVAL_HOUR_MICROSECOND:
|
||
|
|
case INTERVAL_MINUTE_MICROSECOND:
|
||
|
|
case INTERVAL_SECOND_MICROSECOND:
|
||
|
|
return !has_time_args();
|
||
|
|
default:
|
||
|
|
/*
|
||
|
|
INTERVAL_LAST is only an end marker,
|
||
|
|
INTERVAL_WEEK depends on default_week_format which is a session
|
||
|
|
variable and cannot be used for partitioning. See bug#57071.
|
||
|
|
*/
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_typecast_date final : public Item_date_func {
|
||
|
|
public:
|
||
|
|
Item_typecast_date(Item *a) : Item_date_func(a) { maybe_null = 1; }
|
||
|
|
Item_typecast_date(const POS &pos, Item *a) : Item_date_func(pos, a) {
|
||
|
|
maybe_null = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
void print(const THD *thd, String *str,
|
||
|
|
enum_query_type query_type) const override;
|
||
|
|
const char *func_name() const override { return "cast_as_date"; }
|
||
|
|
enum Functype functype() const override { return TYPECAST_FUNC; }
|
||
|
|
bool get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzy_date) override;
|
||
|
|
const char *cast_type() const { return "date"; }
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_typecast_time final : public Item_time_func {
|
||
|
|
bool detect_precision_from_arg;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_typecast_time(Item *a) : Item_time_func(a) {
|
||
|
|
detect_precision_from_arg = true;
|
||
|
|
}
|
||
|
|
Item_typecast_time(const POS &pos, Item *a) : Item_time_func(pos, a) {
|
||
|
|
detect_precision_from_arg = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
Item_typecast_time(const POS &pos, Item *a, uint8 dec_arg)
|
||
|
|
: Item_time_func(pos, a) {
|
||
|
|
detect_precision_from_arg = false;
|
||
|
|
decimals = dec_arg;
|
||
|
|
}
|
||
|
|
void print(const THD *thd, String *str,
|
||
|
|
enum_query_type query_type) const override;
|
||
|
|
const char *func_name() const override { return "cast_as_time"; }
|
||
|
|
enum Functype functype() const override { return TYPECAST_FUNC; }
|
||
|
|
bool get_time(MYSQL_TIME *ltime) override;
|
||
|
|
const char *cast_type() const { return "time"; }
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
set_data_type_time(detect_precision_from_arg ? args[0]->time_precision()
|
||
|
|
: decimals);
|
||
|
|
maybe_null = true;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_typecast_datetime final : public Item_datetime_func {
|
||
|
|
bool detect_precision_from_arg;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_typecast_datetime(Item *a) : Item_datetime_func(a) {
|
||
|
|
detect_precision_from_arg = true;
|
||
|
|
}
|
||
|
|
Item_typecast_datetime(const POS &pos, Item *a) : Item_datetime_func(pos, a) {
|
||
|
|
detect_precision_from_arg = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
Item_typecast_datetime(const POS &pos, Item *a, uint8 dec_arg)
|
||
|
|
: Item_datetime_func(pos, a) {
|
||
|
|
detect_precision_from_arg = false;
|
||
|
|
decimals = dec_arg;
|
||
|
|
}
|
||
|
|
void print(const THD *thd, String *str,
|
||
|
|
enum_query_type query_type) const override;
|
||
|
|
const char *func_name() const override { return "cast_as_datetime"; }
|
||
|
|
enum Functype functype() const override { return TYPECAST_FUNC; }
|
||
|
|
const char *cast_type() const { return "datetime"; }
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
set_data_type_datetime(
|
||
|
|
detect_precision_from_arg ? args[0]->datetime_precision() : decimals);
|
||
|
|
maybe_null = true;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
bool get_date(MYSQL_TIME *res, my_time_flags_t fuzzy_date) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_makedate final : public Item_date_func {
|
||
|
|
public:
|
||
|
|
Item_func_makedate(const POS &pos, Item *a, Item *b)
|
||
|
|
: Item_date_func(pos, a, b) {
|
||
|
|
maybe_null = true;
|
||
|
|
}
|
||
|
|
const char *func_name() const override { return "makedate"; }
|
||
|
|
bool get_date(MYSQL_TIME *ltime, my_time_flags_t fuzzy_date) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_add_time final : public Item_temporal_hybrid_func {
|
||
|
|
const bool is_date;
|
||
|
|
int sign;
|
||
|
|
bool val_datetime(MYSQL_TIME *time, my_time_flags_t fuzzy_date) override;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_add_time(Item *a, Item *b, bool type_arg, bool neg_arg)
|
||
|
|
: Item_temporal_hybrid_func(a, b), is_date(type_arg) {
|
||
|
|
sign = neg_arg ? -1 : 1;
|
||
|
|
}
|
||
|
|
Item_func_add_time(const POS &pos, Item *a, Item *b, bool type_arg,
|
||
|
|
bool neg_arg)
|
||
|
|
: Item_temporal_hybrid_func(pos, a, b), is_date(type_arg) {
|
||
|
|
sign = neg_arg ? -1 : 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
Item_func_add_time(const POS &pos, Item *a, Item *b)
|
||
|
|
: Item_func_add_time(pos, a, b, false, false) {}
|
||
|
|
|
||
|
|
bool resolve_type(THD *) override;
|
||
|
|
void print(const THD *thd, String *str,
|
||
|
|
enum_query_type query_type) const override;
|
||
|
|
const char *func_name() const override { return "add_time"; }
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_timediff final : public Item_time_func {
|
||
|
|
public:
|
||
|
|
Item_func_timediff(const POS &pos, Item *a, Item *b)
|
||
|
|
: Item_time_func(pos, a, b) {}
|
||
|
|
const char *func_name() const override { return "timediff"; }
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
set_data_type_time(
|
||
|
|
MY_MAX(args[0]->time_precision(), args[1]->time_precision()));
|
||
|
|
maybe_null = true;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
bool get_time(MYSQL_TIME *ltime) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_maketime final : public Item_time_func {
|
||
|
|
public:
|
||
|
|
Item_func_maketime(const POS &pos, Item *a, Item *b, Item *c)
|
||
|
|
: Item_time_func(pos, a, b, c) {
|
||
|
|
maybe_null = true;
|
||
|
|
}
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
set_data_type_time(MY_MIN(args[2]->decimals, DATETIME_MAX_DECIMALS));
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
const char *func_name() const override { return "maketime"; }
|
||
|
|
bool get_time(MYSQL_TIME *ltime) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_microsecond final : public Item_int_func {
|
||
|
|
public:
|
||
|
|
Item_func_microsecond(const POS &pos, Item *a) : Item_int_func(pos, a) {}
|
||
|
|
longlong val_int() override;
|
||
|
|
const char *func_name() const override { return "microsecond"; }
|
||
|
|
enum Functype functype() const override { return MICROSECOND_FUNC; }
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
maybe_null = true;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
bool check_partition_func_processor(uchar *) override { return false; }
|
||
|
|
bool check_valid_arguments_processor(uchar *) override {
|
||
|
|
return !has_time_args();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_timestamp_diff final : public Item_int_func {
|
||
|
|
const interval_type int_type;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_timestamp_diff(const POS &pos, Item *a, Item *b,
|
||
|
|
interval_type type_arg)
|
||
|
|
: Item_int_func(pos, a, b), int_type(type_arg) {}
|
||
|
|
const char *func_name() const override { return "timestampdiff"; }
|
||
|
|
enum Functype functype() const override { return TIMESTAMPDIFF_FUNC; }
|
||
|
|
interval_type intervaltype() const { return int_type; }
|
||
|
|
longlong val_int() override;
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
maybe_null = true;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
void print(const THD *thd, String *str,
|
||
|
|
enum_query_type query_type) const override;
|
||
|
|
};
|
||
|
|
|
||
|
|
enum date_time_format {
|
||
|
|
USA_FORMAT,
|
||
|
|
JIS_FORMAT,
|
||
|
|
ISO_FORMAT,
|
||
|
|
EUR_FORMAT,
|
||
|
|
INTERNAL_FORMAT
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_get_format final : public Item_str_ascii_func {
|
||
|
|
public:
|
||
|
|
const enum_mysql_timestamp_type type; // keep it public
|
||
|
|
Item_func_get_format(const POS &pos, enum_mysql_timestamp_type type_arg,
|
||
|
|
Item *a)
|
||
|
|
: Item_str_ascii_func(pos, a), type(type_arg) {}
|
||
|
|
String *val_str_ascii(String *str) override;
|
||
|
|
const char *func_name() const override { return "get_format"; }
|
||
|
|
bool resolve_type(THD *) override {
|
||
|
|
maybe_null = true;
|
||
|
|
set_data_type_string(17, default_charset());
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
void print(const THD *thd, String *str,
|
||
|
|
enum_query_type query_type) const override;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_str_to_date final : public Item_temporal_hybrid_func {
|
||
|
|
enum_mysql_timestamp_type cached_timestamp_type;
|
||
|
|
void fix_from_format(const char *format, size_t length);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
bool val_datetime(MYSQL_TIME *ltime, my_time_flags_t fuzzy_date) override;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_str_to_date(const POS &pos, Item *a, Item *b)
|
||
|
|
: Item_temporal_hybrid_func(pos, a, b) {}
|
||
|
|
const char *func_name() const override { return "str_to_date"; }
|
||
|
|
bool resolve_type(THD *) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_last_day final : public Item_date_func {
|
||
|
|
public:
|
||
|
|
Item_func_last_day(const POS &pos, Item *a) : Item_date_func(pos, a) {
|
||
|
|
maybe_null = true;
|
||
|
|
}
|
||
|
|
const char *func_name() const override { return "last_day"; }
|
||
|
|
bool get_date(MYSQL_TIME *res, my_time_flags_t fuzzy_date) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_internal_update_time final : public Item_datetime_func {
|
||
|
|
THD *thd;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_internal_update_time(const POS &pos, PT_item_list *list)
|
||
|
|
: Item_datetime_func(pos, list) {}
|
||
|
|
enum Functype functype() const override { return DD_INTERNAL_FUNC; }
|
||
|
|
const char *func_name() const override { return "internal_update_time"; }
|
||
|
|
bool resolve_type(THD *thd) override;
|
||
|
|
bool get_date(MYSQL_TIME *res, my_time_flags_t fuzzy_date) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Item_func_internal_check_time final : public Item_datetime_func {
|
||
|
|
THD *thd;
|
||
|
|
|
||
|
|
public:
|
||
|
|
Item_func_internal_check_time(const POS &pos, PT_item_list *list)
|
||
|
|
: Item_datetime_func(pos, list) {}
|
||
|
|
enum Functype functype() const override { return DD_INTERNAL_FUNC; }
|
||
|
|
const char *func_name() const override { return "internal_check_time"; }
|
||
|
|
bool resolve_type(THD *thd) override;
|
||
|
|
bool get_date(MYSQL_TIME *res, my_time_flags_t fuzzy_date) override;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Function prototypes */
|
||
|
|
|
||
|
|
bool make_date_time(Date_time_format *format, MYSQL_TIME *l_time,
|
||
|
|
enum_mysql_timestamp_type type, String *str);
|
||
|
|
|
||
|
|
#endif /* ITEM_TIMEFUNC_INCLUDED */
|