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MDEV-32439 INSERT IGNORE on constraints result in ERROR rather than warning

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INSERT IGNORE had a pecular undocumented case that when one row was
inserted, there was an error rather than a warning.

As LOAD DATA IGNORE, UPDATE IGNORE, INSERT IGNORE SELECT, and INSERT
IGNORE VALUES (single row, for foreign key violation) all behave the same
way with a warning lets keep the behaviour normalized.

In compatibility, previously a error was generated, now a warning is
generated.

This behaviour is now consistent with MySQL-8.0 too.
This commit is contained in:
Daniel Black
2023-10-12 12:53:55 +11:00
parent b0379ea4b3
commit 9e457cbe50
5 changed files with 98 additions and 10 deletions
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30
mysql-test/main/check_constraint.test
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@ -232,5 +232,33 @@ show create table t1;
drop table t1;
--echo #
--echo # End of 10.4 tests
--echo # MDEV-32439 INSERT IGNORE VALUES (one row) errors on constraint
--echo #
CREATE TABLE t1 (v1 varchar(10), v2 varchar(10), constraint unequal check (v1 != v2));
INSERT IGNORE INTO t1 VALUES (1,1);
SHOW WARNINGS;
INSERT IGNORE INTO t1 VALUES (1,2),(2,2);
SHOW WARNINGS;
INSERT IGNORE INTO t1 VALUES (3,3),(4,4);
SHOW WARNINGS;
SELECT * FROM t1;
DROP TABLE t1;
--echo #
--echo # MDEV-32439 INSERT IGNORE VALUES (one row) errors on constraint
--echo #
CREATE TABLE t1 (v1 varchar(10), v2 varchar(10), constraint unequal check (v1 != v2));
INSERT IGNORE INTO t1 VALUES (1,1);
SHOW WARNINGS;
INSERT IGNORE INTO t1 VALUES (1,2),(2,2);
SHOW WARNINGS;
INSERT IGNORE INTO t1 VALUES (3,3),(4,4);
SHOW WARNINGS;
SELECT * FROM t1;
DROP TABLE t1;
--echo #
--echo # End of 11.4 tests
--echo #