# This test file contains a collection of tests developed for
# WL#4179 (Stored programs: validation of stored program statements).
#
# The main idea of the tests here is to check that a stored program
# properly handles metadata changes of the objects being used by
# the stored program.

###########################################################################
###########################################################################

--echo
--echo #
--echo # WL#4179: Stored programs: validation of stored program statements.
--echo #
--echo

###########################################################################
###########################################################################

--echo # The test case below demonstrates that meta-data changes are detected
--echo # by triggers.
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
CREATE TABLE t1 (a INT, b INT);
CREATE TABLE t2 (a INT, b INT);
CREATE TABLE t3 (a INT);

INSERT INTO t2 VALUES (11, 12), (21, 22);

CREATE TRIGGER t3_ai AFTER INSERT ON t3 FOR EACH ROW
  INSERT INTO t1 SELECT * FROM t2;

INSERT INTO t3 (a) VALUES (1);

SELECT * FROM t1;
SELECT * FROM t2;

ALTER TABLE t1 ADD COLUMN c INT;
ALTER TABLE t2 ADD COLUMN c INT;
INSERT INTO t2 VALUES (31, 32, 33);

INSERT INTO t3 (a) VALUES (2);

SELECT * FROM t1;
SELECT * FROM t2;

DROP TABLE t1;
DROP TABLE t2;
DROP TABLE t3;

###########################################################################

--echo
--echo # Check that NEW/OLD rows work within triggers.
--echo

CREATE TABLE t1 (a INT);
INSERT INTO t1(a) VALUES (1);

delimiter |;

CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
BEGIN
  SET @a = OLD.a;
  SET @b = NEW.a;
  SELECT OLD.a INTO @c;
  SELECT NEW.a INTO @d;

  SET NEW.a = NEW.a * 2;
END|

delimiter ;|

UPDATE t1 SET a = a * 10;

SELECT @a, @c, @b, @d;

SELECT a FROM t1;

DROP TABLE t1;

###########################################################################

--echo

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);

CREATE PROCEDURE p1()
  SELECT * FROM t1;

CALL p1();

--echo
--echo # 1.1 Check if added column into table is recognized correctly
--echo # in a stored procedure.
ALTER TABLE t1 ADD COLUMN b INT DEFAULT 0;
CALL p1();

--echo
--echo # 1.2 Check if dropped column is not appeared in SELECT query
--echo # executed inside a stored procedure.
ALTER TABLE t1 DROP COLUMN a;
CALL p1();

--echo
--echo # 1.3 Check if changed column is picked up properly.
ALTER TABLE t1 CHANGE COLUMN b b VARCHAR(255) DEFAULT 'n/a';
DELETE FROM t1;
INSERT INTO t1 VALUES (b), ('hello');
CALL p1();

--echo
--echo # 1.4 Check if table's recreation is handled correctly
--echo # inside a call of stored procedure. 

DROP TABLE t1;
DROP PROCEDURE p1;

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);

CREATE PROCEDURE p1()
  SELECT * FROM t1;

CALL p1();

DROP TABLE t1;

--error ER_NO_SUCH_TABLE
CALL p1();

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);

CALL p1();

--echo
--echo # 1.5 Recreate table t1 with another set of columns and
--echo # re-call a stored procedure.

DROP TABLE t1;
DROP PROCEDURE p1;

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);

CREATE PROCEDURE p1()
  SELECT * FROM t1;

CALL p1();

DROP TABLE t1;

--error ER_NO_SUCH_TABLE
CALL p1();

CREATE TABLE t1 (b VARCHAR(10), c VARCHAR(10));
INSERT INTO t1 VALUES ('a', 'b'), ('c', 'd');

CALL p1();

DROP TABLE t1;
DROP PROCEDURE p1;

###########################################################################

--echo
--echo # 2.1 Stored program that uses query like 'SELECT * FROM v' must be
--echo # re-executed successfully if some columns were added into the view
--echo # definition by ALTER VIEW;

CREATE VIEW v1 AS SELECT 1, 2, 3;

CREATE PROCEDURE p1()
  SELECT * FROM v1;

CALL p1();

ALTER VIEW v1 AS SELECT 1, 2, 3, 4, 5;

CALL p1();

--echo
--echo # 2.2 Stored program that uses query like 'SELECT * FROM v' must be
--echo # re-executed successfully if some columns were removed from the view
--echo # definition by ALTER VIEW;

ALTER VIEW v1 AS SELECT 1, 5;

CALL p1();

--echo
--echo # 2.3 Stored program that uses query like 'SELECT * FROM v' must be
--echo # re-executed successfully if a base table for the view being used was
--echo # extended by new columns (by ALTER TABLE);

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

DROP VIEW v1;
CREATE VIEW v1 AS SELECT * FROM t1;

DROP PROCEDURE p1;
CREATE PROCEDURE p1()
  SELECT * FROM v1;

CALL p1();

ALTER TABLE t1 ADD COLUMN c INT DEFAULT 3;

# NOTE: this behaviour differs from the one of regular tables -- the thing is
# that "The view definition is “frozen” at creation time, so changes to the
# underlying tables afterward do not affect the view definition."
# (http://dev.mysql.com/doc/refman/5.0/en/create-view.html).
# So, this call should return 2 (not 3) columns.
CALL p1();

--echo
--echo # 2.4 Stored program that uses query like 'SELECT * FROM v' must be
--echo # re-executed successfully if not used columns were removed from the
--echo # base table of this view (by ALTER TABLE);

DROP TABLE t1;
CREATE TABLE t1(a INT, b INT, c INT);
INSERT INTO t1 VALUES (1, 2, 3);

DROP VIEW v1;
CREATE VIEW v1 AS SELECT b, c FROM t1;

DROP PROCEDURE p1;
CREATE PROCEDURE p1()
  SELECT * FROM v1;

CALL p1();

ALTER TABLE t1 DROP COLUMN a;

CALL p1();

ALTER TABLE t1 DROP COLUMN b;

# NOTE: see the note above about view specific. Must-have column has been
# dropped -- the view has become invalid.
--error ER_VIEW_INVALID
CALL p1();

--echo
--echo # 2.5 Stored program that uses query like 'SELECT * FROM v' must be
--echo # re-executed successfully if a type of some base table's columns were
--echo # changed (by ALTER TABLE);

DROP TABLE t1;
CREATE TABLE t1(a INT, b INT, c INT);
INSERT INTO t1 VALUES (1, 2, 3);

DROP VIEW v1;
CREATE VIEW v1 AS SELECT b, c FROM t1;

DROP PROCEDURE p1;
CREATE PROCEDURE p1()
  SELECT * FROM v1;

CALL p1();

ALTER TABLE t1 CHANGE COLUMN b b VARCHAR(255) DEFAULT 'n/a';
DELETE FROM t1;
INSERT INTO t1(a, c) VALUES (10, 30);

CALL p1();

--echo
--echo # 2.6 Stored program that uses query like 'SELECT * FROM v' must be
--echo # re-executed successfully if the view 'v' was dropped and created again
--echo # with the same definition;
--echo #
--echo # 2.7 Stored program that uses query like 'SELECT * FROM v' must be
--echo # re-executed successfully if the view 'v' was dropped and created again
--echo # with different, but compatible definition.

DROP VIEW v1;
DROP TABLE t1;
DROP PROCEDURE p1;

CREATE VIEW v1 AS SELECT 1, 2, 3;

CREATE PROCEDURE p1()
  SELECT * FROM v1;

CALL p1();

DROP VIEW v1;

--error ER_NO_SUCH_TABLE
CALL p1();

CREATE VIEW v1 AS SELECT 4, 5, 6;

CALL p1();

--echo
--echo # 2.8 Stored program that uses query like 'SELECT * FROM v' must be
--echo # re-executed successfully if the view base tables have been re-created
--echo # using the same or compatible definition.

DROP VIEW v1;
DROP PROCEDURE p1;

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CREATE VIEW v1 AS SELECT * FROM t1;

CREATE PROCEDURE p1()
  SELECT * FROM v1;

CALL p1();

DROP TABLE t1;

--error ER_VIEW_INVALID
CALL p1();

CREATE TABLE t1(a VARCHAR(255), b VARCHAR(255));
INSERT INTO t1 VALUES ('a', 'b'), ('c', 'd');

CALL p1();

DROP VIEW v1;
DROP TABLE t1;
DROP PROCEDURE p1;

--echo 
--echo # 3.1 Stored program that uses query like 'SELECT * FROM t' must be
--echo # re-executed successfully if some columns were added into temporary table
--echo # table 't' (by ALTER TABLE);

CREATE TEMPORARY TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CREATE PROCEDURE p1() SELECT * FROM t1;

CALL p1();

ALTER TABLE t1 ADD COLUMN c INT DEFAULT 3;

CALL p1();

--echo 
--echo # 3.2 Stored program that uses query like 'SELECT * FROM t' must be
--echo # re-executed successfully if some columns were removed from temporary
--echo # table 't' (by ALTER TABLE);

ALTER TABLE t1 DROP COLUMN a;

CALL p1();

--echo 
--echo # 3.3 Stored program that uses query like 'SELECT * FROM t' must be
--echo # re-executed successfully if a type of some temporary table's columns were
--echo # changed (by ALTER TABLE);

ALTER TABLE t1 CHANGE COLUMN b b VARCHAR(255) DEFAULT 'n/a';
INSERT INTO t1(c) VALUES (4);

CALL p1();

--echo 
--echo # 3.4 Stored program that uses query like 'SELECT * FROM t' must be
--echo # re-executed successfully if the temporary table 't' was dropped and
--echo # created again with the same definition;
--echo #
--echo # 3.5 Stored program that uses query like 'SELECT * FROM t' must be
--echo # re-executed successfully if the temporary table 't' was dropped and
--echo # created again with different, but compatible definition.

DROP TEMPORARY TABLE t1;
CREATE TEMPORARY TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CALL p1();

DROP TEMPORARY TABLE t1;
CREATE TEMPORARY TABLE t1(a VARCHAR(255), b VARCHAR(255), c VARCHAR(255));
INSERT INTO t1 VALUES ('aa', 'bb', 'cc');

CALL p1();

DROP TEMPORARY TABLE t1;
DROP PROCEDURE p1;

###########################################################################

--echo
--echo # 4.1 Stored program must fail when it is re-executed after a table's column
--echo # that this program is referenced to has been removed;

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CREATE PROCEDURE p1() SELECT a, b FROM t1;

CALL p1();

ALTER TABLE t1 DROP COLUMN b;

--error ER_BAD_FIELD_ERROR
CALL p1();

DROP PROCEDURE p1;
DROP TABLE t1;

--echo
--echo # 4.2 Stored program must fail when it is re-executed after a temporary
--echo # table's column that this program is referenced to has been removed;

CREATE TEMPORARY TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CREATE PROCEDURE p1() SELECT a, b FROM t1;

CALL p1();

ALTER TABLE t1 DROP COLUMN b;

--error ER_BAD_FIELD_ERROR
CALL p1();

DROP PROCEDURE p1;
DROP TEMPORARY TABLE t1;

--echo
--echo # 4.3 Stored program must fail when it is re-executed after a view's
--echo # column that this program is referenced to has been removed;

CREATE VIEW v1 AS SELECT 1 AS a, 2 AS b;

CREATE PROCEDURE p1() SELECT a, b FROM v1;

CALL p1();

ALTER VIEW v1 AS SELECT 1 AS a;

--error ER_BAD_FIELD_ERROR
CALL p1();

DROP PROCEDURE p1;
DROP VIEW v1;

--echo
--echo # 4.4 Stored program must fail when it is re-executed after a regular table
--echo # that this program referenced to was removed;

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CREATE PROCEDURE p1() SELECT a, b FROM t1;

CALL p1();

DROP TABLE t1;

--error ER_NO_SUCH_TABLE
CALL p1();

DROP PROCEDURE p1;

--echo
--echo # 4.5 Stored program must fail when it is re-executed after a view that
--echo # this program referenced to was removed;

CREATE VIEW v1 AS SELECT 1 AS a, 2 AS b;

CREATE PROCEDURE p1() SELECT a, b FROM v1;

CALL p1();

DROP VIEW v1;

--error ER_NO_SUCH_TABLE
CALL p1();

DROP PROCEDURE p1;

--echo
--echo # 4.6 Stored program must fail when it is re-executed after a temporary
--echo # table that this program referenced to was removed;

CREATE TEMPORARY TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CREATE PROCEDURE p1() SELECT a, b FROM t1;

CALL p1();

DROP TABLE t1;

--error ER_NO_SUCH_TABLE
CALL p1();

DROP PROCEDURE p1;

--echo
--echo # 4.7 Stored program must fail if the program executes some
--echo # SQL-statement and afterwards re-executes it again when some table 't'
--echo # referenced by the statement was dropped in the period between statement
--echo # execution;

CREATE TABLE t1(a INT);
CREATE TABLE t2(a INT);

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DECLARE CONTINUE HANDLER FOR 1146
    SELECT 'Table t1 does not exist anymore' as msg;

  SELECT * FROM t1;
  INSERT INTO t2 VALUES (1);

  SELECT GET_LOCK('m1', 10000);
  
  SELECT * FROM t1;
END|

delimiter ;|

--echo
--echo # -- connection: con1
--connect (con1, localhost, root)

SELECT GET_LOCK('m1', 0);

--echo
--echo # -- connection: default
--connection default

--send CALL p1()

--echo
--echo # -- connection: con1
--connection con1

let $wait_condition = SELECT COUNT(*) = 1 FROM t2;
--source include/wait_condition.inc

DROP TABLE t1;

SELECT RELEASE_LOCK('m1');

--echo
--echo # -- connection: default
--connection default

--reap

--disconnect con1

DROP TABLE t2;
DROP PROCEDURE p1;

###########################################################################

--echo 
--echo # 5.1 Regular table -> View

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CREATE PROCEDURE p1() SELECT * FROM t1;

CALL p1();

DROP TABLE t1;
CREATE VIEW t1 AS SELECT 1 AS a, 2 AS b;

CALL p1();

DROP PROCEDURE p1;
DROP VIEW t1;

--echo
--echo # 5.2 Regular table -> Temporary table

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CREATE PROCEDURE p1() SELECT * FROM t1;

CALL p1();

DROP TABLE t1;
CREATE TEMPORARY TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CALL p1();

DROP PROCEDURE p1;
DROP TEMPORARY TABLE t1;

--echo
--echo # 5.3 View -> Regular table

CREATE VIEW t1 AS SELECT 1 AS a, 2 AS b;

CREATE PROCEDURE p1() SELECT * FROM t1;

CALL p1();

DROP VIEW t1;
CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CALL p1();

DROP PROCEDURE p1;
DROP TABLE t1;

--echo
--echo # 5.4 View -> Temporary table

CREATE VIEW t1 AS SELECT 1 AS a, 2 AS b;

CREATE PROCEDURE p1() SELECT * FROM t1;

CALL p1();

DROP VIEW t1;
CREATE TEMPORARY TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CALL p1();

DROP PROCEDURE p1;
DROP TEMPORARY TABLE t1;

--echo
--echo # 5.5 Temporary table -> View

CREATE TEMPORARY TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CREATE PROCEDURE p1() SELECT * FROM t1;

CALL p1();

DROP TEMPORARY TABLE t1;

CREATE VIEW t1 AS SELECT 1 AS a, 2 AS b;

CALL p1();

DROP PROCEDURE p1;
DROP VIEW t1;

--echo
--echo # 5.6 Temporary table -> Regular table

CREATE TEMPORARY TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CREATE PROCEDURE p1() SELECT * FROM t1;

CALL p1();

DROP TEMPORARY TABLE t1;
CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

CALL p1();

DROP PROCEDURE p1;
DROP TABLE t1;

###########################################################################

--echo
--echo # 6.1 Trigger that uses column 'a' of table 't' via pseudo-variable NEW
--echo # must be re-executed successfully if the table definition has been changed
--echo # in a compatible way. "Compatible way" in this case is that if the table
--echo # 't' still has a column named 'a' and the column type is compatible with
--echo # the operation that NEW.a takes part of.
--echo #
--echo # 6.2 Trigger that uses column 'a' of table 't' via pseudo-variable OLD
--echo # must be re-executed successfully if the table definition has been changed
--echo # in a compatible way. "Compatible way" in this case is that if the table
--echo # 't' still has a column named 'a' and the column type is compatible with
--echo # the operation that OLD.a takes part of.

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

delimiter |;

CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
BEGIN
  SET @x = OLD.a;
  SET @y = NEW.a;
END|

delimiter ;|

--echo
SET @x = 0, @y = 0;
UPDATE t1 SET a = 3, b = 4;
SELECT @x, @y;

--echo
ALTER TABLE t1 ADD COLUMN c INT DEFAULT -1;

--echo
SET @x = 0, @y = 0;
UPDATE t1 SET a = 5, b = 6;
SELECT @x, @y;

--echo
ALTER TABLE t1 CHANGE COLUMN a a VARCHAR(255);

--echo
SET @x = 0, @y = 0;
UPDATE t1 SET a = CONCAT('xxx_', a), b = 7;
SELECT @x, @y;

--echo
DROP TABLE t1;

--echo
--echo # 6.3 Re-execution of a trigger that uses column 'a' of table 't' via
--echo # pseudo-variable NEW must fail if the table definition has been changed in
--echo # the way that the column 'a' does not exist anymore.
--echo # 
--echo # 6.4 Re-execution of a trigger that uses column 'a' of table 't' via
--echo # pseudo-variable OLD must fail if the table definition has been changed in
--echo # the way that the column 'a' does not exist anymore.

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

delimiter |;

CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
BEGIN
  SET @x = OLD.a;
  SET @y = NEW.b;
END|

delimiter ;|

--echo
UPDATE t1 SET a = 3, b = 4;

--echo
ALTER TABLE t1 CHANGE COLUMN a a2 INT;

--echo
--error ER_BAD_FIELD_ERROR
UPDATE t1 SET a2 = 5, b = 6;

--echo
ALTER TABLE t1 CHANGE COLUMN a2 a INT;
ALTER TABLE t1 CHANGE COLUMN b b2 INT;

--echo
--error ER_BAD_FIELD_ERROR
UPDATE t1 SET a = 5, b2 = 6;

--echo
DROP TABLE t1;

###########################################################################

--echo
--echo # 7.1 Setup:
--echo #   - stored program 'a', which alters regular table 't' in a compatible
--echo #     way;
--echo #   - stored program 'b', which calls 'a' and uses 't' before and after the
--echo #     call;
--echo # Stored program 'b' must be executed successfully.

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

delimiter |;

CREATE PROCEDURE p1()
  ALTER TABLE t1 ADD COLUMN c INT DEFAULT 3|

CREATE PROCEDURE p2()
BEGIN
  SELECT a, b FROM t1;
  CALL p1();
  SELECT a, b FROM t1;
END|

delimiter ;|

--echo
CALL p2();
--echo

DROP PROCEDURE p1;
DROP PROCEDURE p2;

DROP TABLE t1;

--echo
--echo # 7.2 Setup:
--echo #   - stored program 'a', which alters temporary table 't' in a compatible
--echo #     way;
--echo #   - stored program 'b', which calls 'a' and uses 't' before and after the
--echo #     call;
--echo # Stored program 'b' must be executed successfully.

CREATE TEMPORARY TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

delimiter |;

CREATE PROCEDURE p1()
  ALTER TABLE t1 ADD COLUMN c INT DEFAULT 3|

CREATE PROCEDURE p2()
BEGIN
  SELECT a, b FROM t1;
  CALL p1();
  SELECT a, b FROM t1;
END|

delimiter ;|

--echo
CALL p2();
--echo

DROP PROCEDURE p1;
DROP PROCEDURE p2;

DROP TEMPORARY TABLE t1;

--echo
--echo # 7.3 Setup:
--echo #   - stored program 'a', which re-creates regular table 't' in a
--echo #     compatible way;
--echo #   - stored program 'b', which calls 'a' and uses 't' before and after the
--echo #     call;
--echo # Stored program 'b' must be executed successfully.

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DROP TABLE t1;
  CREATE TABLE t1(a INT, b INT, c INT);
  INSERT INTO t1 VALUES (1, 2, 3);
END|

CREATE PROCEDURE p2()
BEGIN
  SELECT a, b FROM t1;
  CALL p1();
  SELECT a, b FROM t1;
END|

delimiter ;|

--echo
CALL p2();
--echo

DROP PROCEDURE p1;
DROP PROCEDURE p2;

DROP TABLE t1;

--echo
--echo # 7.4 Setup:
--echo #   - stored program 'a', which re-creates temporary table 't' in a
--echo #     compatible way;
--echo #   - stored program 'b', which calls 'a' and uses 't' before and after the
--echo #     call;
--echo # Stored program 'b' must be executed successfully.

CREATE TEMPORARY TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DROP TEMPORARY TABLE t1;
  CREATE TEMPORARY TABLE t1(a INT, b INT, c INT);
  INSERT INTO t1 VALUES (1, 2, 3);
END|

CREATE PROCEDURE p2()
BEGIN
  SELECT a, b FROM t1;
  CALL p1();
  SELECT a, b FROM t1;
END|

delimiter ;|

--echo
CALL p2();
--echo

DROP PROCEDURE p1;
DROP PROCEDURE p2;

DROP TEMPORARY TABLE t1;

--echo
--echo # 7.5 Setup:
--echo #   - stored program 'a', which re-creates view 'v' in a compatible way;
--echo #   - stored program 'b', which calls 'a' and uses 'v' before and after the
--echo #     call;
--echo # Stored program 'b' must be executed successfully.

CREATE VIEW v1 AS SELECT 1 AS a, 2 AS b;

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DROP VIEW v1;
  CREATE VIEW v1 AS SELECT 1 AS a, 2 AS b, 3 AS c;
END|

CREATE PROCEDURE p2()
BEGIN
  SELECT a, b FROM v1;
  CALL p1();
  SELECT a, b FROM v1;
END|

delimiter ;|

--echo
CALL p2();
--echo

DROP PROCEDURE p1;
DROP PROCEDURE p2;

DROP VIEW v1;

--echo
--echo # 7.6 Setup:
--echo #   - stored program 'a', which alters regular table 't' in an incompatible
--echo #     way;
--echo #   - stored program 'b', which calls 'a' and uses 't' before and after the
--echo #     call;
--echo # Stored program 'b' must fail on access to the table after its
--echo # modification.

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

delimiter |;

CREATE PROCEDURE p1()
  ALTER TABLE t1 DROP COLUMN a|

CREATE PROCEDURE p2()
BEGIN
  SELECT a, b FROM t1;
  CALL p1();
  SELECT a, b FROM t1;
END|

delimiter ;|

--echo
--error ER_BAD_FIELD_ERROR
CALL p2();
--echo

DROP PROCEDURE p1;
DROP PROCEDURE p2;

DROP TABLE t1;

--echo
--echo # 7.7 Setup:
--echo #   - stored program 'a', which alters temporary table 't' in an
--echo #     incompatible way;
--echo #   - stored program 'b', which calls 'a' and uses 't' before and after the
--echo #     call;
--echo # Stored program 'b' must fail on access to the table after its
--echo # modification.

CREATE TEMPORARY TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

delimiter |;

CREATE PROCEDURE p1()
  ALTER TABLE t1 DROP COLUMN a|

CREATE PROCEDURE p2()
BEGIN
  SELECT a, b FROM t1;
  CALL p1();
  SELECT a, b FROM t1;
END|

delimiter ;|

--echo
--error ER_BAD_FIELD_ERROR
CALL p2();
--echo

DROP PROCEDURE p1;
DROP PROCEDURE p2;

DROP TEMPORARY TABLE t1;

--echo
--echo # 7.8 Setup:
--echo #   - stored program 'a', which re-creates regular table 't' in an
--echo #     incompatible way;
--echo #   - stored program 'b', which calls 'a' and uses 't' before and after the
--echo #     call;
--echo # Stored program 'b' must fail on access to the table after its
--echo # modification.

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DROP TABLE t1;
  CREATE TABLE t1(b INT, c INT);
  INSERT INTO t1 VALUES (2, 3);
END|

CREATE PROCEDURE p2()
BEGIN
  SELECT a, b FROM t1;
  CALL p1();
  SELECT a, b FROM t1;
END|

delimiter ;|

--echo
--error ER_BAD_FIELD_ERROR
CALL p2();
--echo

DROP PROCEDURE p1;
DROP PROCEDURE p2;

DROP TABLE t1;

--echo
--echo # 7.9 Setup:
--echo #   - stored program 'a', which re-creates temporary table 't' in an
--echo #     incompatible way;
--echo #   - stored program 'b', which calls 'a' and uses 't' before and after the
--echo #     call;
--echo # Stored program 'b' must fail on access to the table after its
--echo # modification.

CREATE TEMPORARY TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1, 2);

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DROP TEMPORARY TABLE t1;
  CREATE TEMPORARY TABLE t1(b INT, c INT);
  INSERT INTO t1 VALUES (2, 3);
END|

CREATE PROCEDURE p2()
BEGIN
  SELECT a, b FROM t1;
  CALL p1();
  SELECT a, b FROM t1;
END|

delimiter ;|

--echo
--error ER_BAD_FIELD_ERROR
CALL p2();
--echo

DROP PROCEDURE p1;
DROP PROCEDURE p2;

DROP TEMPORARY TABLE t1;

--echo
--echo # 7.10 Setup:
--echo #   - stored program 'a', which re-creates view 'v' in an incompatible way;
--echo #   - stored program 'b', which calls 'a' and uses 'v' before and after the
--echo #     call;
--echo # Stored program 'b' must fail on access to the view after its
--echo # modification.

CREATE VIEW v1 AS SELECT 1 AS a, 2 AS b;

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DROP VIEW v1;
  CREATE VIEW v1 AS SELECT 2 AS b, 3 AS c;
END|

CREATE PROCEDURE p2()
BEGIN
  SELECT a, b FROM v1;
  CALL p1();
  SELECT a, b FROM v1;
END|

delimiter ;|

--echo
--error ER_BAD_FIELD_ERROR
CALL p2();
--echo

DROP PROCEDURE p1;
DROP PROCEDURE p2;

DROP VIEW v1;

###########################################################################

--echo # 8. Stored program must be executed successfully when:
--echo #  a. the program uses a table/view/temporary table that doesn't exist
--echo #     at the time of start program execution
--echo #  b. failed reference to the missed table/view/temporary table handled
--echo #     by stored program
--echo #  c. this table/view/temporary table is created as part of the
--echo #     program execution
--echo #  d. stored program gets access to newly created table/view/temporary
--echo #     table from some SQL-statement during subsequent stored program execution.

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DECLARE CONTINUE HANDLER FOR SQLEXCEPTION
  BEGIN
    SELECT 'SQLEXCEPTION caught' AS msg;
    CREATE TABLE t1(a INT, b INT);
    INSERT INTO t1 VALUES (1, 2);
  END;

  SELECT * FROM t1;
  SELECT * FROM t1;

  DROP TABLE t1;
END|

CREATE PROCEDURE p2()
BEGIN
  DECLARE CONTINUE HANDLER FOR SQLEXCEPTION
  BEGIN
    SELECT 'SQLEXCEPTION caught' AS msg;
    CREATE TEMPORARY TABLE t1(a INT, b INT);
    INSERT INTO t1 VALUES (1, 2);
  END;

  SELECT * FROM t1;
  SELECT * FROM t1;

  DROP TEMPORARY TABLE t1;
END|

CREATE PROCEDURE p3()
BEGIN
  DECLARE CONTINUE HANDLER FOR SQLEXCEPTION
  BEGIN
    SELECT 'SQLEXCEPTION caught' AS msg;
    CREATE VIEW v1 AS SELECT 1 AS a, 2 AS b;
  END;

  SELECT * FROM v1;
  SELECT * FROM v1;

  DROP VIEW v1;
END|

delimiter ;|

CALL p1();

CALL p2();

CALL p3();

DROP PROCEDURE p1;
DROP PROCEDURE p2;
DROP PROCEDURE p3;

###########################################################################

--echo
--echo # 9. Stored program must be executed successfully when
--echo #    - the stored program has an expression in one of the following
--echo #      statements
--echo #      - RETURN
--echo #      - IF
--echo #      - CASE
--echo #      - WHILE
--echo #      - UNTIL
--echo #      - SET
--echo #    - the expression depends on the meta-data of some table/view/temporary table;
--echo #    - the meta-data of dependent object has changed in a compatible way.
--echo #
--echo #    Note, that CASE-expression must be evaluated once even if (some)
--echo #    CASE-expressions need to be re-parsed.
--echo #
--echo # 10. Subsequent executions of a stored program must fail when
--echo #    - the stored program has an expression in one of the following
--echo #      statements
--echo #      - RETURN
--echo #      - IF
--echo #      - CASE
--echo #      - WHILE
--echo #      - UNTIL
--echo #      - SET
--echo #    - the expression depends on the meta-data of some table/view/temporary table;
--echo #    - the meta-data of dependent object has changed in a non-compatible way.
--echo #
--echo #    Note, that CASE-expression must be evaluated once even if (some)
--echo #    CASE-expressions need to be re-parsed.

###########################################################################

--echo
--echo # Check IF-statement.
--echo

delimiter |;

# NOTE: check also that spaces (no spaces) don't matter.

CREATE PROCEDURE p1()
BEGIN
  IF(SELECT * FROM t1)THEN
    SELECT 1;
  ELSE
    SELECT 2;
  END IF;
END|

CREATE PROCEDURE p2()
BEGIN
  DECLARE v INT DEFAULT 1;

  IF v * (SELECT * FROM t1) THEN
    SELECT 1;
  ELSE
    SELECT 2;
  END IF;
END|

CREATE FUNCTION f1() RETURNS INT
BEGIN
  IF (SELECT * FROM t1) THEN
    RETURN 1;
  ELSE
    RETURN 2;
  END IF;

  RETURN 3;
END|

CREATE FUNCTION f2() RETURNS INT
BEGIN
  DECLARE v INT DEFAULT 1;

  IF v * (SELECT * FROM t1) THEN
    RETURN 1;
  ELSE
    RETURN 2;
  END IF;

  RETURN 3;
END|

delimiter ;|

CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (1);

--echo
CALL p1();
CALL p2();
SELECT f1();
SELECT f2();
--echo

UPDATE t1 SET a = 0;

--echo
CALL p1();
CALL p2();
SELECT f1();
SELECT f2();
--echo

ALTER TABLE t1 ADD COLUMN b INT DEFAULT 1;

--echo

--error ER_OPERAND_COLUMNS
CALL p1();

--error ER_OPERAND_COLUMNS
CALL p2();

--error ER_OPERAND_COLUMNS
SELECT f1();

--error ER_OPERAND_COLUMNS
SELECT f2();

--echo

ALTER TABLE t1 DROP COLUMN a;

--echo
CALL p1();
CALL p2();
SELECT f1();
SELECT f2();
--echo

DROP PROCEDURE p1;
DROP PROCEDURE p2;
DROP FUNCTION f1;
DROP FUNCTION f2;
DROP TABLE t1;

###########################################################################

--echo
--echo # Check WHILE-statement.
--echo

delimiter |;

# NOTE: check also that spaces (no spaces) don't matter.

CREATE PROCEDURE p1(x INT)
BEGIN
  WHILE(SELECT * FROM t1)DO
    SELECT x;
    UPDATE t1 SET a = x;
    SET x = x - 1;
  END WHILE;
END|

delimiter ;|

CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (0);

CALL p1(3);

UPDATE t1 SET a = 1;

CALL p1(3);

UPDATE t1 SET a = 1;

ALTER TABLE t1 ADD COLUMN b INT DEFAULT 1;

--error ER_OPERAND_COLUMNS
CALL p1(3);

ALTER TABLE t1 DROP COLUMN a;

# Column 'a' not found for the UPDATE statememnt.
--error ER_BAD_FIELD_ERROR
CALL p1(3);

DROP PROCEDURE p1;
DROP TABLE t1;

###########################################################################

--echo
--echo # Check REPEAT-statement.
--echo

delimiter |;

# NOTE: check also that spaces (no spaces) don't matter.

CREATE PROCEDURE p1(x INT)
BEGIN
  REPEAT
    SELECT x;
    UPDATE t1 SET a = x;
    SET x = x - 1;
  UNTIL(NOT (SELECT * FROM t1))END REPEAT;
END|

delimiter ;|

CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (0);

CALL p1(3);

UPDATE t1 SET a = 1;

CALL p1(3);

UPDATE t1 SET a = 1;

ALTER TABLE t1 ADD COLUMN b INT DEFAULT 1;

--error ER_OPERAND_COLUMNS
CALL p1(3);

ALTER TABLE t1 DROP COLUMN a;

# Column 'a' not found for the UPDATE statememnt.
--error ER_BAD_FIELD_ERROR
CALL p1(3);

DROP PROCEDURE p1;
DROP TABLE t1;

###########################################################################

--echo
--echo # Check CASE-statement (round #1).
--echo

delimiter |;

# Check that metadata changes in WHEN-expressions are handled properly.
CREATE PROCEDURE p1()
BEGIN
  CASE
    WHEN (SELECT * FROM t1) = 1 THEN SELECT 'a1';
    WHEN (SELECT * FROM t1) = 2 THEN SELECT 'a2';
    WHEN (SELECT * FROM t1) = 3 THEN SELECT 'a3';
    ELSE SELECT 'a4';
  END CASE;
END|

# Check that metadata changes in CASE-expression, are handled properly.
CREATE PROCEDURE p2()
BEGIN
  CASE (SELECT * FROM t1)
    WHEN 1 THEN SELECT 'a1';
    WHEN 2 THEN SELECT 'a2';
    WHEN 3 THEN SELECT 'a3';
    ELSE SELECT 'a4';
  END CASE;
END|

delimiter ;|

CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (0);

--echo

CALL p1();
CALL p2();

--echo

UPDATE t1 SET a = 3;

--echo

CALL p1();
CALL p2();

--echo

ALTER TABLE t1 ADD COLUMN b INT DEFAULT 2;

--echo

--error ER_OPERAND_COLUMNS
CALL p1();

--error ER_OPERAND_COLUMNS
CALL p2();

--echo

ALTER TABLE t1 DROP COLUMN a;

--echo

CALL p1();
CALL p2();

--echo

DROP PROCEDURE p1;
DROP PROCEDURE p2;
DROP TABLE t1;

###########################################################################

--echo
--echo # Check CASE-statement (round #2).
--echo #
--echo # Check that CASE-expression is executed once even if the metadata, used
--echo # in a WHEN-expression, have changed.
--echo

CREATE TABLE t1(a INT);
CREATE TABLE t2(a INT);

INSERT INTO t1 VALUES (1);
INSERT INTO t2 VALUES (1);

delimiter |;

CREATE FUNCTION f1() RETURNS INT
BEGIN
  SET @x = @x + 1;
  RETURN (SELECT a FROM t1);
END|

CREATE PROCEDURE p1()
BEGIN
  CASE f1()
    WHEN 1 THEN SELECT 'a1';
    WHEN 2 THEN SELECT 'a2';
    WHEN (SELECT * FROM t2) THEN SELECT 'subselect';
    ELSE SELECT 'else';
  END CASE;
END|

delimiter ;|

--echo

SET @x = 0;
CALL p1();
SELECT @x;

--echo

UPDATE t1 SET a = 3;
ALTER TABLE t2 ADD COLUMN b INT DEFAULT 3;

--echo

SET @x = 0;
--error ER_OPERAND_COLUMNS
CALL p1();
SELECT @x;

--echo

ALTER TABLE t2 DROP COLUMN a;

--echo

SET @x = 0;
CALL p1();
SELECT @x;

--echo

DROP PROCEDURE p1;
DROP FUNCTION f1;
DROP TABLE t1;
DROP TABLE t2;

###########################################################################

--echo
--echo # Check DEFAULT clause.
--echo #
--echo

CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (1);

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DECLARE v INT DEFAULT (SELECT * FROM t1);
  SELECT v;
END|

delimiter ;|

--echo
CALL p1();

--echo

ALTER TABLE t1 ADD COLUMN b INT DEFAULT 2;

--echo
--error ER_OPERAND_COLUMNS
CALL p1();

--echo
ALTER TABLE t1 DROP COLUMN a;

--echo
CALL p1();

--echo
DROP PROCEDURE p1;
DROP TABLE t1;

###########################################################################

--echo
--echo # Check SET.
--echo #
--echo

CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (1);

CREATE TABLE t2(a INT);
INSERT INTO t2 VALUES (1);

delimiter |;

# Check SET for SP-variable.

CREATE PROCEDURE p1()
BEGIN
  DECLARE x INT;
  SET x = (SELECT * FROM t1);
  SELECT x;
END|

# Check SET for user variable.

CREATE PROCEDURE p2()
BEGIN
  SET @x = NULL;
  SET @x = (SELECT * FROM t1);
  SELECT @x;
END|

# Check SET for triggers.

CREATE TRIGGER t2_bu BEFORE UPDATE ON t2 FOR EACH ROW
BEGIN
  SET NEW.a = (SELECT * FROM t1) * 2;
END|

delimiter ;|

--echo
CALL p1();
--echo
CALL p2();
--echo
UPDATE t2 SET a = 10;

--echo

ALTER TABLE t1 ADD COLUMN b INT DEFAULT 2;

--echo
--error ER_OPERAND_COLUMNS
CALL p1();
--echo
--error ER_OPERAND_COLUMNS
CALL p2();
--echo
--error ER_OPERAND_COLUMNS
UPDATE t2 SET a = 20;

--echo
ALTER TABLE t1 DROP COLUMN a;

--echo
CALL p1();
--echo
CALL p2();
--echo
UPDATE t2 SET a = 30;

--echo
DROP PROCEDURE p1;
DROP PROCEDURE p2;
DROP TABLE t1;
DROP TABLE t2;

###########################################################################

--echo
--echo # 11.1 If metadata of the objects (regular tables, temporary tables,
--echo # views), used in SELECT-statement changed between DECLARE CURSOR and
--echo # OPEN statements, the SELECT-statement should be re-parsed to use
--echo # up-to-date metadata.
--echo
--echo
--echo # - Regular table.
--echo

CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (1);

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DECLARE v INT;
  DECLARE c CURSOR FOR SELECT * FROM t1;

  ALTER TABLE t1 ADD COLUMN b INT DEFAULT 2;
  ALTER TABLE t1 DROP COLUMN a;

  OPEN c;
  FETCH c INTO v;
  CLOSE c;

  SELECT v;
END|

delimiter ;|

--echo
CALL p1();

--echo
DROP TABLE t1;
DROP PROCEDURE p1;

--echo
--echo # - Temporary table.
--echo

CREATE TEMPORARY TABLE t1(a INT);
INSERT INTO t1 VALUES (1);

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DECLARE v INT;
  DECLARE c CURSOR FOR SELECT * FROM t1;

  ALTER TABLE t1 ADD COLUMN b INT DEFAULT 2;
  ALTER TABLE t1 DROP COLUMN a;

  OPEN c;
  FETCH c INTO v;
  CLOSE c;

  SELECT v;
END|

delimiter ;|

--echo
CALL p1();

--echo
DROP TEMPORARY TABLE t1;
DROP PROCEDURE p1;

# NOTE: ALTER VIEW is not available within Stored Programs.

--echo
--echo # 11.2 If the metadata changed between OPEN and FETCH or CLOSE
--echo # statements, those changes should not be noticed.
--echo

CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (1);

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DECLARE v INT;
  DECLARE c CURSOR FOR SELECT * FROM t1;

  OPEN c;

  ALTER TABLE t1 ADD COLUMN b INT DEFAULT 2;
  ALTER TABLE t1 DROP COLUMN a;

  FETCH c INTO v;
  CLOSE c;

  SELECT v;
END|

delimiter ;|

--echo
CALL p1();

--echo
DROP TABLE t1;
DROP PROCEDURE p1;

--echo
--echo # 11.3 Re-parsing of the SELECT-statement should be made correctly
--echo # (in the correct parsing context) if the metadata changed between
--echo # DECLARE CURSOR and OPEN statements, and those statements reside in different
--echo # parsing contexts.
--echo

CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (1);

delimiter |;

CREATE PROCEDURE p1()
BEGIN
  DECLARE f1 INT;
  DECLARE f2 INT;
  DECLARE f3 INT;

  DECLARE x INT DEFAULT 1;
  DECLARE y INT DEFAULT 2;

  DECLARE c CURSOR FOR SELECT x, y, t1.a FROM t1;

  ALTER TABLE t1 ADD COLUMN b INT;

  BEGIN
    DECLARE x INT DEFAULT 10;
    DECLARE y INT DEFAULT 20;

    OPEN c;

    FETCH c INTO f1, f2, f3;
    SELECT f1, f2, f3;

    CLOSE c;
  END;

END|

delimiter ;|

--echo
CALL p1();

--echo
DROP TABLE t1;
DROP PROCEDURE p1;

###########################################################################
## Other tests.
###########################################################################

--echo
--echo # Test procedure behaviour after view recreation.
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);

CREATE VIEW v1 AS SELECT * FROM t1;

CREATE PROCEDURE p1()
  SELECT * FROM v1;

CALL p1();

--echo # Alter underlying table and recreate the view.
ALTER TABLE t1 ADD COLUMN (b INT);
ALTER VIEW v1 AS SELECT * FROM t1;

--echo # And check whether the call of stored procedure handles it correctly.
CALL p1();

DROP VIEW v1;
DROP TABLE t1;
DROP PROCEDURE p1;

--echo # Test if metadata changes for temporary table is handled
--echo # correctly inside a stored procedure.
CREATE TEMPORARY TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);

CREATE PROCEDURE p1()
  SELECT * FROM t1;

CALL p1();

--echo # Test if added temporary table's column is recognized during
--echo # procedure invocation.
ALTER TABLE t1 ADD COLUMN (b INT);
CALL p1();

--echo # Test if dropped temporary table's column is not appeared
--echo # in procedure's result.
ALTER TABLE t1 DROP COLUMN a;
CALL p1();

DROP PROCEDURE p1;
DROP TABLE t1;

--echo # Test handle of metadata changes with stored function.

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);

delimiter |;

CREATE FUNCTION f1() RETURNS INT
BEGIN
  CREATE TEMPORARY TABLE t1_result_set AS SELECT * FROM t1;

  RETURN 0;
END|

delimiter ;|

SELECT f1();
SELECT * FROM t1_result_set;
DROP TABLE t1_result_set;

--echo # Check if added column is noticed by invocation of stored function.
ALTER TABLE t1 ADD COLUMN (b INT);

SELECT f1();
SELECT * FROM t1_result_set;
DROP TABLE t1_result_set;

--echo # Check if dropped column is noticed by invocation of stored function.
ALTER TABLE t1 DROP COLUMN a;

SELECT f1();
SELECT * FROM t1_result_set;
DROP TABLE t1_result_set;

DROP TABLE t1;
DROP FUNCTION f1;

--echo # Test if table's recreation is handled correctly
--echo # inside a stored function. 

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);

delimiter |;

CREATE FUNCTION f1() RETURNS INT
BEGIN
  CREATE TEMPORARY TABLE t1_result_set AS SELECT * FROM t1;

  RETURN 0;
END|

delimiter ;|

SELECT f1();
SELECT * FROM t1_result_set;
DROP TABLE t1_result_set;

--echo # Recreate table and check if it is handled correctly
--echo # by function invocation.
DROP TABLE t1;
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);

SELECT f1();
SELECT * FROM t1_result_set;
DROP TABLE t1_result_set;

DROP FUNCTION f1;
DROP TABLE t1;

--echo # Test if changes in the view's metadata is handled
--echo # correctly by function call.
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);
CREATE VIEW v1 AS SELECT * FROM t1;

delimiter |;

CREATE FUNCTION f1() RETURNS INT
BEGIN
  CREATE TEMPORARY TABLE t1_result_set AS SELECT * FROM v1;
  RETURN 0;
END|

delimiter ;|

SELECT f1();
SELECT * FROM t1_result_set;
DROP TABLE t1_result_set;

ALTER TABLE t1 ADD COLUMN (b INT);
ALTER VIEW v1 AS SELECT * FROM t1;

SELECT f1();
SELECT * FROM t1_result_set;
DROP TABLE t1_result_set;
DROP TABLE t1;
DROP VIEW v1;

DROP FUNCTION f1;

--echo # Check if queried object's type substitution (table->view, view->table,
--echo # table->temp table, etc.) is handled correctly during invocation of
--echo # stored function/procedure.
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);

delimiter |;

CREATE FUNCTION f1() RETURNS INT
BEGIN
  CREATE TEMPORARY TABLE t1_result_set AS SELECT * FROM t1;
  RETURN 0;
END|

CREATE PROCEDURE p1()
  SELECT * FROM t1|

delimiter ;|

CALL p1();
SELECT f1();
SELECT * FROM t1_result_set;
DROP TABLE t1_result_set;

DROP TABLE t1;
CREATE TEMPORARY TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);

CALL p1;
SELECT f1();
SELECT * FROM t1_result_set;
DROP TABLE t1_result_set;

DROP TABLE t1;
CREATE TABLE t2 (a INT);
INSERT INTO t2 VALUES (1), (2);
CREATE VIEW t1 AS SELECT * FROM t2;

CALL p1;
SELECT f1();
SELECT * FROM t1_result_set;
DROP TABLE t1_result_set;

DROP TABLE t2;
DROP VIEW t1;

DROP FUNCTION f1;
DROP PROCEDURE p1;

--echo # Test handle of metadata changes with triggers.
 
CREATE TABLE t1 (a INT);

CREATE TRIGGER trg1 BEFORE INSERT ON t1 FOR EACH ROW
  SET new.a = new.a + 100;

INSERT INTO t1 VALUES (1), (2);
SELECT * FROM t1;

--echo # Check if added table's column is handled correctly inside trigger.
ALTER TABLE t1 ADD COLUMN (b INT);
INSERT INTO t1 VALUES (3, 4);

SELECT * FROM t1;

DROP TRIGGER trg1;
DROP TABLE t1;

--echo # Test if deleted column is handled correctly by trigger invocation.
CREATE TABLE t1 (a INT, b INT);

CREATE TRIGGER trg1 BEFORE INSERT ON t1 FOR EACH ROW
  SET new.a = new.a + 100;

INSERT INTO t1 VALUES (1, 2), (3, 4);
SELECT * FROM t1;

ALTER TABLE t1 DROP COLUMN b;

INSERT INTO t1 VALUES (5);
SELECT * FROM t1;

DROP TRIGGER trg1;
DROP TABLE t1;

--echo # Check if server returns and error when was dropped a column
--echo # that is used inside a trigger body.
CREATE TABLE t1 (a INT, b INT);

CREATE TRIGGER trg1 BEFORE INSERT ON t1 FOR EACH ROW
  SET new.a = new.a + 100;

INSERT INTO t1 VALUES (1, 2), (3, 4);
SELECT * FROM t1;

ALTER TABLE t1 DROP COLUMN a;

--error ER_BAD_FIELD_ERROR
INSERT INTO t1 VALUES (5);

DROP TRIGGER trg1;
DROP TABLE t1;

--echo
--echo # Check updateable views inside triggers.

CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (1);

CREATE TABLE t2(a INT);
INSERT INTO t2 VALUES (1);

CREATE VIEW v1 AS SELECT a FROM t1;

delimiter |;

CREATE TRIGGER t2_bu BEFORE UPDATE ON t2 FOR EACH ROW
BEGIN
  INSERT INTO v1 VALUES (NEW.a);
  SET @x = (SELECT CHARSET(a) FROM v1 LIMIT 1);
END|

delimiter ;|

--echo
SET @x = NULL;

UPDATE t2 SET a = 10;

SELECT * FROM v1;
SELECT @x;

--echo
ALTER TABLE t1 CHANGE COLUMN a a CHAR(2);

--echo
SET @x = NULL;

UPDATE t2 SET a = 20;

SELECT * FROM v1;
SELECT @x;

--echo
DROP TABLE t1;
DROP TABLE t2;
DROP VIEW v1;
SET sql_mode = default;