Current File : //proc/self/root/proc/self/root/usr/share/mysql-test/suite/innodb/t/innodb-alter-nullable.test
--source include/have_innodb.inc
# Save the initial number of concurrent sessions.
--source include/count_sessions.inc
CREATE TABLE t (c1 INT PRIMARY KEY, c2 INT NOT NULL, c3 INT) ENGINE=InnoDB;
INSERT INTO t VALUES (1,2,3),(4,5,6),(7,8,9);
--enable_info
# This one will be a no-op.
# MySQL should perhaps issue an error, because it refuses to modify
# the PRIMARY KEY column c1 from NOT NULL to NULL.
ALTER TABLE t CHANGE c1 c1 INT NULL FIRST, ALGORITHM=INPLACE;
# NULL -> NOT NULL only allowed INPLACE if strict sql_mode is on.
--disable_info
set @old_sql_mode = @@sql_mode;
set @@sql_mode = 'STRICT_TRANS_TABLES';
--enable_info
ALTER TABLE t MODIFY c3 INT NOT NULL, ALGORITHM=INPLACE;
--disable_info
set @@sql_mode = @old_sql_mode;
--enable_info
# Request some conflicting changes for a single column.
--error ER_BAD_FIELD_ERROR
ALTER TABLE t CHANGE c2 c2 INT, CHANGE c2 c2 INT NOT NULL;
--error ER_BAD_FIELD_ERROR
ALTER TABLE t MODIFY c2 INT, MODIFY c2 INT NOT NULL;
--error ER_BAD_FIELD_ERROR
ALTER TABLE t MODIFY c2 INT UNSIGNED, MODIFY c2 INT;
--error ER_BAD_FIELD_ERROR
ALTER TABLE t MODIFY c2 CHAR(1) NOT NULL, MODIFY c2 INT NOT NULL;
# No-ops.
ALTER TABLE t CHANGE c2 c2 INT NOT NULL;
ALTER TABLE t MODIFY c2 INT NOT NULL;
--disable_info
connect (con1,localhost,root,,);
connection con1;
SET SQL_MODE='STRICT_ALL_TABLES';
--error ER_BAD_NULL_ERROR
UPDATE t SET c2=NULL;
SELECT * FROM t;
connection default;
# This should change the column to NULL.
ALTER TABLE t MODIFY c2 INT, ALGORITHM=INPLACE;
connection con1;
BEGIN;
UPDATE t SET c2=NULL;
SELECT * FROM t;
ROLLBACK;
SELECT * FROM t;
disconnect con1;
connection default;
# This should be no-op.
ALTER TABLE t MODIFY c2 INT NULL, ALGORITHM=INPLACE;
--replace_column 1 # 5 #
SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES
WHERE NAME='test/t';
DROP TABLE t;
# Check that all connections opened by test cases in this file are really
# gone so execution of other tests won't be affected by their presence.
--source include/wait_until_count_sessions.inc
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