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91e4f00389
Only starting with MariaDB 10.3.8 (MDEV-16365), InnoDB can actually handle ALTER IGNORE TABLE correctly when introducing a NOT NULL attribute to a column that contains a NULL value. Between MariaDB Server 10.0 and 10.2, we would incorrectly return an error for ALTER IGNORE TABLE when the column contains a NULL value.
92 lines
2.6 KiB
Plaintext
92 lines
2.6 KiB
Plaintext
CREATE TABLE t (c1 INT PRIMARY KEY, c2 INT NOT NULL, c3 INT) ENGINE=InnoDB;
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INSERT INTO t VALUES (1,2,3),(4,5,6),(7,8,9);
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ALTER TABLE t CHANGE c1 c1 INT NULL FIRST, ALGORITHM=INPLACE;
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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set @old_sql_mode = @@sql_mode;
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set @@sql_mode = 'STRICT_TRANS_TABLES';
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ALTER TABLE t MODIFY c3 INT NOT NULL, ALGORITHM=INPLACE;
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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set @@sql_mode = @old_sql_mode;
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ALTER TABLE t CHANGE c2 c2 INT, CHANGE c2 c2 INT NOT NULL;
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ERROR 42S22: Unknown column 'c2' in 't'
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ALTER TABLE t MODIFY c2 INT, MODIFY c2 INT NOT NULL;
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ERROR 42S22: Unknown column 'c2' in 't'
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ALTER TABLE t MODIFY c2 INT UNSIGNED, MODIFY c2 INT;
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ERROR 42S22: Unknown column 'c2' in 't'
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ALTER TABLE t MODIFY c2 CHAR(1) NOT NULL, MODIFY c2 INT NOT NULL;
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ERROR 42S22: Unknown column 'c2' in 't'
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ALTER TABLE t CHANGE c2 c2 INT NOT NULL;
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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ALTER TABLE t MODIFY c2 INT NOT NULL;
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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SET SQL_MODE='STRICT_ALL_TABLES';
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UPDATE t SET c2=NULL;
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ERROR 23000: Column 'c2' cannot be null
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SELECT * FROM t;
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c1 c2 c3
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1 2 3
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4 5 6
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7 8 9
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ALTER TABLE t MODIFY c2 INT, ALGORITHM=INPLACE;
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BEGIN;
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UPDATE t SET c2=NULL;
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SELECT * FROM t;
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c1 c2 c3
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1 NULL 3
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4 NULL 6
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7 NULL 9
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ROLLBACK;
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SELECT * FROM t;
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c1 c2 c3
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1 2 3
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4 5 6
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7 8 9
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ALTER TABLE t MODIFY c2 INT NULL, ALGORITHM=INPLACE;
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SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES
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WHERE NAME='test/t';
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TABLE_ID NAME FLAG N_COLS SPACE FILE_FORMAT ROW_FORMAT ZIP_PAGE_SIZE
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# test/t 1 6 # Antelope Compact 0
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DROP TABLE t;
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CREATE TABLE t1(c1 INT) ENGINE=InnoDB;
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ALTER TABLE t1 ADD CONSTRAINT UNIQUE KEY i1(c1);
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ALTER TABLE t1 CHANGE c1 c1 INT NOT NULL,ADD KEY(c1);
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DROP TABLE t1;
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#
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# MDEV-18732 InnoDB: ALTER IGNORE returns error for NULL
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#
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SET @mode = @@sql_mode;
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SET sql_mode = STRICT_TRANS_TABLES;
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CREATE TABLE t1(c INT) ENGINE=InnoDB;
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INSERT INTO t1 VALUES (NULL);
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ALTER IGNORE TABLE t1 MODIFY c INT NOT NULL;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 1
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Warnings:
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Warning 1265 Data truncated for column 'c' at row 1
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INSERT INTO t1 VALUES (NULL);
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ERROR 23000: Column 'c' cannot be null
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SELECT * FROM t1;
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c
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0
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DROP TABLE t1;
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CREATE TABLE t1(c INT) ENGINE=InnoDB;
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INSERT INTO t1 VALUES (NULL),(1),(1);
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ALTER IGNORE TABLE t1 ADD UNIQUE(c);
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affected rows: 3
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info: Records: 3 Duplicates: 1 Warnings: 0
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ALTER IGNORE TABLE t1 ADD PRIMARY KEY(c);
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affected rows: 2
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info: Records: 2 Duplicates: 0 Warnings: 1
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Warnings:
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Warning 1265 Data truncated for column 'c' at row 1
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SELECT * FROM t1;
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c
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0
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1
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DROP TABLE t1;
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SET sql_mode = @mode;
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