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MDEV-29540 Incorrect sequence values in INSERT SELECT

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The population of default values in INSERT SELECT was being
performed twice. With sequences, this resulted in every
second sequence value being used.

With SELECT INSERT we remove the second invokation of
table->update_default_fields(). This was already performed
in store_values() invoking fill_record_n_invoke_before_triggers()
which invoked update_default_fields() previously.

We do need to return an error on duplicate values, so the
::store_values is extended to take the ignore option.
This commit is contained in:
Daniel Black
2022-09-16 11:20:41 +10:00
parent d6707ab11f
commit 8c38939369
4 changed files with 195 additions and 14 deletions
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102
mysql-test/suite/sql_sequence/default.result
View File

@ -195,3 +195,105 @@ INSERT INTO t1 () values ();
EXECUTE stmt;
DROP TABLE t1;
DROP SEQUENCE s;
#
# MDEV-29540 Incorrect sequence values in INSERT SELECT
#
CREATE SEQUENCE s1;
CREATE TABLE t1 (
a BIGINT UNSIGNED NOT NULL PRIMARY KEY
DEFAULT (NEXT VALUE FOR s1),
b CHAR(1) NOT NULL
);
INSERT INTO t1 (b) VALUES ('a');
INSERT INTO t1 (b) VALUES ('b'), ('c');
INSERT INTO t1 (b) VALUES ('d');
INSERT INTO t1 (b) SELECT c FROM (
SELECT 'e' as c
UNION
SELECT 'f'
UNION
SELECT 'g'
) der;
SELECT a, b FROM t1;
a b
1 a
2 b
3 c
4 d
5 e
6 f
7 g
ALTER SEQUENCE s1 RESTART;
INSERT INTO t1 (b) SELECT c FROM (
SELECT 'a' as c
UNION
SELECT 'b'
UNION
SELECT 'c'
UNION
SELECT 'd'
UNION
SELECT 'e'
UNION
SELECT 'f'
UNION
SELECT 'g'
) der;
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
ALTER SEQUENCE s1 RESTART;
INSERT IGNORE INTO t1 (b) SELECT c FROM (
SELECT 'a' as c
UNION
SELECT 'b'
UNION
SELECT 'c'
UNION
SELECT 'd'
UNION
SELECT 'e'
UNION
SELECT 'f'
UNION
SELECT 'g'
) der;
Warnings:
Warning 1062 Duplicate entry '1' for key 'PRIMARY'
Warning 1062 Duplicate entry '2' for key 'PRIMARY'
Warning 1062 Duplicate entry '3' for key 'PRIMARY'
Warning 1062 Duplicate entry '4' for key 'PRIMARY'
Warning 1062 Duplicate entry '5' for key 'PRIMARY'
Warning 1062 Duplicate entry '6' for key 'PRIMARY'
Warning 1062 Duplicate entry '7' for key 'PRIMARY'
SELECT a, b FROM t1;
a b
1 a
2 b
3 c
4 d
5 e
6 f
7 g
INSERT IGNORE INTO t1 (b) SELECT c FROM (
SELECT 'h' as c
UNION
SELECT 'i'
UNION
SELECT 'j'
) der;
SELECT a, b FROM t1;
a b
1 a
2 b
3 c
4 d
5 e
6 f
7 g
8 h
9 i
10 j
DROP TABLE t1;
DROP SEQUENCE s1;
#
# End of 10.3 tests
#