You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
318 lines
10 KiB
318 lines
10 KiB
# Initialise
|
|
--disable_warnings
|
|
drop table if exists t1, t2;
|
|
--enable_warnings
|
|
|
|
#
|
|
# Testing of NULL in a lot of different places
|
|
#
|
|
|
|
select null,isnull(null),isnull(1/0),isnull(1/0 = null),ifnull(null,1),ifnull(null,"TRUE"),ifnull("TRUE","ERROR"),1/0 is null,1 is not null;
|
|
explain select null,isnull(null),isnull(1/0),isnull(1/0 = null),ifnull(null,1),ifnull(null,"TRUE"),ifnull("TRUE","ERROR"),1/0 is null,1 is not null;
|
|
select 1 | NULL,1 & NULL,1+NULL,1-NULL;
|
|
select NULL=NULL,NULL<>NULL,IFNULL(NULL,1.1)+0,IFNULL(NULL,1) | 0;
|
|
select strcmp("a",NULL),(1<NULL)+0.0,NULL regexp "a",null like "a%","a%" like null;
|
|
select concat("a",NULL),replace(NULL,"a","b"),replace("string","i",NULL),replace("string",NULL,"i"),insert("abc",1,1,NULL),left(NULL,1);
|
|
select repeat("a",0),repeat("ab",5+5),repeat("ab",-1),reverse(NULL);
|
|
select field(NULL,"a","b","c");
|
|
select 2 between null and 1,2 between 3 AND NULL,NULL between 1 and 2,2 between NULL and 3, 2 between 1 AND null;
|
|
explain select 2 between null and 1,2 between 3 AND NULL,NULL between 1 and 2,2 between NULL and 3, 2 between 1 AND null;
|
|
SELECT NULL AND NULL, 1 AND NULL, NULL AND 1, NULL OR NULL, 0 OR NULL, NULL OR 0;
|
|
SELECT (NULL OR NULL) IS NULL;
|
|
select NULL AND 0, 0 and NULL;
|
|
select inet_ntoa(null),inet_aton(null);
|
|
explain select inet_ntoa(null),inet_aton(null);
|
|
select inet6_ntoa(null),inet6_aton(null);
|
|
explain select inet6_ntoa(null), inet6_aton(null);
|
|
|
|
create table t1 (x int);
|
|
insert into t1 values (null);
|
|
select * from t1 where x != 0;
|
|
drop table t1;
|
|
|
|
#
|
|
# Test problem med index on NULL columns and testing with =NULL;
|
|
#
|
|
|
|
CREATE TABLE t1 (
|
|
indexed_field int default NULL,
|
|
KEY indexed_field (indexed_field)
|
|
);
|
|
INSERT INTO t1 VALUES (NULL),(NULL);
|
|
SELECT * FROM t1 WHERE indexed_field=NULL;
|
|
SELECT * FROM t1 WHERE indexed_field IS NULL;
|
|
SELECT * FROM t1 WHERE indexed_field<=>NULL;
|
|
DROP TABLE t1;
|
|
|
|
#
|
|
# Testing of IFNULL
|
|
#
|
|
create table t1 (a int, b int);
|
|
insert into t1 values(20,null);
|
|
select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on
|
|
t2.b=t3.a;
|
|
select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on
|
|
t2.b=t3.a order by 1;
|
|
insert into t1 values(10,null);
|
|
select t2.b, ifnull(t2.b,"this is null") from t1 as t2 left join t1 as t3 on
|
|
t2.b=t3.a order by 1;
|
|
drop table t1;
|
|
|
|
#
|
|
# Test inserting and updating with NULL
|
|
#
|
|
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
|
|
CREATE TABLE t1 (a varchar(16) NOT NULL default '', b smallint(6) NOT NULL default 0, c datetime NOT NULL default '0000-00-00 00:00:00', d smallint(6) NOT NULL default 0);
|
|
INSERT INTO t1 SET a = "", d= "2003-01-14 03:54:55";
|
|
UPDATE t1 SET d=1/NULL;
|
|
UPDATE t1 SET d=NULL;
|
|
--error 1048
|
|
INSERT INTO t1 (a) values (null);
|
|
--error 1048
|
|
INSERT INTO t1 (a) values (1/null);
|
|
INSERT INTO t1 (a) values (null),(null);
|
|
--error 1048
|
|
INSERT INTO t1 (b) values (null);
|
|
--error 1048
|
|
INSERT INTO t1 (b) values (1/null);
|
|
INSERT INTO t1 (b) values (null),(null);
|
|
--error 1048
|
|
INSERT INTO t1 (c) values (null);
|
|
--error 1048
|
|
INSERT INTO t1 (c) values (1/null);
|
|
INSERT INTO t1 (c) values (null),(null);
|
|
--error 1048
|
|
INSERT INTO t1 (d) values (null);
|
|
--error 1048
|
|
INSERT INTO t1 (d) values (1/null);
|
|
INSERT INTO t1 (d) values (null),(null);
|
|
select * from t1;
|
|
drop table t1;
|
|
SET sql_mode = default;
|
|
#
|
|
# Test to check elimination of IS NULL predicate for a non-nullable attribute
|
|
# (bug #1990)
|
|
#
|
|
create table t1 (a int not null, b int not null, index idx(a));
|
|
insert into t1 values
|
|
(1,1), (2,2), (3,3), (4,4), (5,5), (6,6),
|
|
(7,7), (8,8), (9,9), (10,10), (11,11), (12,12);
|
|
analyze table t1;
|
|
explain select * from t1 where a between 2 and 3;
|
|
explain select * from t1 where a between 2 and 3 or b is null;
|
|
drop table t1;
|
|
select cast(NULL as signed);
|
|
|
|
#
|
|
# IS NULL is unable to use index in range if column is declared not null
|
|
# (Bug #4256)
|
|
#
|
|
create table t1(i int, key(i));
|
|
insert into t1 values(1);
|
|
insert into t1 select i*2 from t1;
|
|
insert into t1 select i*2 from t1;
|
|
insert into t1 select i*2 from t1;
|
|
insert into t1 select i*2 from t1;
|
|
insert into t1 select i*2 from t1;
|
|
insert into t1 select i*2 from t1;
|
|
insert into t1 select i*2 from t1;
|
|
insert into t1 select i*2 from t1;
|
|
insert into t1 select i*2 from t1;
|
|
insert into t1 values(null);
|
|
analyze table t1;
|
|
explain select * from t1 where i=2 or i is null;
|
|
select count(*) from t1 where i=2 or i is null;
|
|
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
|
|
alter table t1 change i i int not null;
|
|
SET sql_mode = default;
|
|
explain select * from t1 where i=2 or i is null;
|
|
select count(*) from t1 where i=2 or i is null;
|
|
drop table t1;
|
|
|
|
#
|
|
# NULL has its own type BINARY(0) by default.
|
|
# But NULL should be weaker than a constant
|
|
# when mixing charsets/collations
|
|
#
|
|
set names latin2;
|
|
# Check that result type is taken from a non-null string
|
|
create table t1 select
|
|
null as c00,
|
|
if(1, null, 'string') as c01,
|
|
if(0, null, 'string') as c02,
|
|
ifnull(null, 'string') as c03,
|
|
ifnull('string', null) as c04,
|
|
case when 0 then null else 'string' end as c05,
|
|
case when 1 then null else 'string' end as c06,
|
|
coalesce(null, 'string') as c07,
|
|
coalesce('string', null) as c08,
|
|
least('string',null) as c09,
|
|
least(null, 'string') as c10,
|
|
greatest('string',null) as c11,
|
|
greatest(null, 'string') as c12,
|
|
nullif('string', null) as c13,
|
|
nullif(null, 'string') as c14,
|
|
trim('string' from null) as c15,
|
|
trim(null from 'string') as c16,
|
|
substring_index('string', null, 1) as c17,
|
|
substring_index(null, 'string', 1) as c18,
|
|
elt(1, null, 'string') as c19,
|
|
elt(1, 'string', null) as c20,
|
|
concat('string', null) as c21,
|
|
concat(null, 'string') as c22,
|
|
concat_ws('sep', 'string', null) as c23,
|
|
concat_ws('sep', null, 'string') as c24,
|
|
concat_ws(null, 'string', 'string') as c25,
|
|
make_set(3, 'string', null) as c26,
|
|
make_set(3, null, 'string') as c27,
|
|
export_set(3, null, 'off', 'sep') as c29,
|
|
export_set(3, 'on', null, 'sep') as c30,
|
|
export_set(3, 'on', 'off', null) as c31,
|
|
replace(null, 'from', 'to') as c32,
|
|
replace('str', null, 'to') as c33,
|
|
replace('str', 'from', null) as c34,
|
|
insert('str', 1, 2, null) as c35,
|
|
insert(null, 1, 2, 'str') as c36,
|
|
lpad('str', 10, null) as c37,
|
|
rpad(null, 10, 'str') as c38;
|
|
|
|
show create table t1;
|
|
drop table t1;
|
|
|
|
#
|
|
# Check that comparison is done according to
|
|
# non-null string collation, i.e. case insensitively,
|
|
# rather than according to NULL's collation, i.e. case sensitively
|
|
#
|
|
# in field
|
|
select
|
|
case 'str' when 'STR' then 'str' when null then 'null' end as c01,
|
|
case 'str' when null then 'null' when 'STR' then 'str' end as c02,
|
|
field(null, 'str1', 'str2') as c03,
|
|
field('str1','STR1', null) as c04,
|
|
field('str1', null, 'STR1') as c05,
|
|
'string' in ('STRING', null) as c08,
|
|
'string' in (null, 'STRING') as c09;
|
|
|
|
# Restore charset to the default value.
|
|
set names latin1;
|
|
|
|
#
|
|
# Bug#19145: mysqld crashes if you set the default value of an enum field to NULL
|
|
#
|
|
create table bug19145a (e enum('a','b','c') default 'b' , s set('x', 'y', 'z') default 'y' );
|
|
create table bug19145b (e enum('a','b','c') default null, s set('x', 'y', 'z') default null);
|
|
|
|
create table bug19145c (e enum('a','b','c') not null default 'b' , s set('x', 'y', 'z') not null default 'y' );
|
|
|
|
# Invalid default value for 's'
|
|
--error 1067
|
|
create table bug19145setnotnulldefaultnull (e enum('a','b','c') default null, s set('x', 'y', 'z') not null default null);
|
|
|
|
# Invalid default value for 'e'
|
|
--error 1067
|
|
create table bug19145enumnotnulldefaultnull (e enum('a','b','c') not null default null, s set('x', 'y', 'z') default null);
|
|
|
|
alter table bug19145a alter column e set default null;
|
|
alter table bug19145a alter column s set default null;
|
|
alter table bug19145a add column (i int);
|
|
|
|
alter table bug19145b alter column e set default null;
|
|
alter table bug19145b alter column s set default null;
|
|
alter table bug19145b add column (i int);
|
|
|
|
# Invalid default value for 'e'
|
|
--error 1067
|
|
alter table bug19145c alter column e set default null;
|
|
|
|
# Invalid default value for 's'
|
|
--error 1067
|
|
alter table bug19145c alter column s set default null;
|
|
alter table bug19145c add column (i int);
|
|
|
|
show create table bug19145a;
|
|
show create table bug19145b;
|
|
show create table bug19145c;
|
|
|
|
drop table bug19145a;
|
|
drop table bug19145b;
|
|
drop table bug19145c;
|
|
|
|
--echo # End of 4.1 tests
|
|
|
|
--echo #
|
|
--echo # Bug #31471: decimal_bin_size: Assertion `scale >= 0 &&
|
|
--echo # precision > 0 && scale <= precision'
|
|
--echo #
|
|
|
|
CREATE TABLE t1 (a DECIMAL (1, 0) ZEROFILL, b DECIMAL (1, 0) ZEROFILL);
|
|
INSERT INTO t1 (a, b) VALUES (0, 0);
|
|
|
|
CREATE TABLE t2 SELECT IFNULL(a, b) FROM t1;
|
|
DESCRIBE t2;
|
|
DROP TABLE t2;
|
|
|
|
CREATE TABLE t2 SELECT IFNULL(a, NULL) FROM t1;
|
|
DESCRIBE t2;
|
|
DROP TABLE t2;
|
|
|
|
CREATE TABLE t2 SELECT IFNULL(NULL, b) FROM t1;
|
|
DESCRIBE t2;
|
|
|
|
DROP TABLE t1, t2;
|
|
|
|
--echo # End of 5.0 tests
|
|
|
|
--echo #
|
|
--echo # WL#7247: Removal of \N
|
|
--echo #
|
|
|
|
--error ER_PARSE_ERROR
|
|
SELECT \N;
|
|
|
|
|
|
--echo #
|
|
--echo # Bug#29337233 'LATE NULLS FILTERING' NEEDED EVEN FOR EQ_REF JOINS KEYS
|
|
--echo #
|
|
|
|
create table t1 (
|
|
pk int primary key,
|
|
col_int_unique int,
|
|
c char(255) not null default 'xxxx'
|
|
) engine = innoDb;
|
|
create unique index ix1 ON t1(col_int_unique);
|
|
|
|
insert into t1(pk,col_int_unique) values (1,1), (2,NULL);
|
|
insert into t1(pk,col_int_unique) values (3,3), (4,4), (5,5), (6,6), (7,7), (8,8);
|
|
|
|
ANALYZE TABLE t1;
|
|
|
|
#EQ_REF access should be used on index ix1 in query plan
|
|
EXPLAIN
|
|
SELECT STRAIGHT_JOIN *
|
|
FROM t1 LEFT OUTER JOIN t1 AS t2
|
|
ON t1.col_int_unique = t2.col_int_unique;
|
|
|
|
# 'Late NULLs filtering' is required in EQRefIterator::Read() to avoid
|
|
# Threating 'NULL == NULL' as a match.
|
|
SELECT STRAIGHT_JOIN *
|
|
FROM t1 LEFT OUTER JOIN t1 AS t2
|
|
ON t1.col_int_unique = t2.col_int_unique;
|
|
|
|
|
|
# Test cases for 'impossible_null_ref' eliminations in read_const()
|
|
# EQ_REF access may also be optimized into CONST table access.
|
|
#
|
|
# 'show status' is used to verify 'impossible_null_ref' eliminations:
|
|
# For all test cases below, handler_read_key=1 is expected:
|
|
# - Table t1 is read by the PK: 't1.pk = 2' -> = 1
|
|
# - Table t2 read is 'impossible_null_ref' eliminated -> no read.
|
|
|
|
flush status;
|
|
SELECT STRAIGHT_JOIN *
|
|
FROM t1 JOIN t1 AS t2
|
|
ON t1.col_int_unique = t2.col_int_unique
|
|
WHERE t1.pk = 2;
|
|
show status like 'handler_read_key';
|
|
|
|
drop table t1;
|
|
|