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MDEV-25078: ALTER INDEX is inconsistent with ADD/DROP/RENAME index

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Allowing ALTER KEY syntax in ALTER TABLE,so one can use:

ALTER TABLE tbl ALTER INDEX index_name IGNORED
ALTER TABLE tbl ALTER KEY index_name IGNORED
This commit is contained in:
Varun Gupta 2021-03-11 03:22:59 +05:30 • committed by Sergei Petrunia
parent 0540e50873
commit d9c5eb2f33
3 changed files with 35 additions and 1 deletions
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21
mysql-test/main/ignore_indexes.result
View file

@ -458,3 +458,24 @@ BEGIN
SET IGNORED= a+b; SET IGNORED= a+b;
END | END |
ERROR HY000: Unknown system variable 'IGNORED' ERROR HY000: Unknown system variable 'IGNORED'
#
# ALLOWING ALTER KEY syntax in ALTER TABLE
#
CREATE TABLE t1 (a INT, KEY (a));
ALTER TABLE t1 ALTER INDEX a IGNORED;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL,
KEY `a` (`a`) IGNORED
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1 (a INT, KEY (a));
ALTER TABLE t1 ALTER KEY a IGNORED;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL,
KEY `a` (`a`) IGNORED
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;

13
mysql-test/main/ignore_indexes.test
View file

@ -429,3 +429,16 @@ BEGIN
SET IGNORED= a+b; SET IGNORED= a+b;
END | END |
DELIMITER ;| DELIMITER ;|
--echo #
--echo # ALLOWING ALTER KEY syntax in ALTER TABLE
--echo #
CREATE TABLE t1 (a INT, KEY (a));
ALTER TABLE t1 ALTER INDEX a IGNORED;
SHOW CREATE TABLE t1;
DROP TABLE t1;
CREATE TABLE t1 (a INT, KEY (a));
ALTER TABLE t1 ALTER KEY a IGNORED;
SHOW CREATE TABLE t1;
DROP TABLE t1;

2
sql/sql_yacc.yy
View file

@ -7794,7 +7794,7 @@ alter_list_item:
if (unlikely(Lex->add_alter_list($4, $7, $3))) if (unlikely(Lex->add_alter_list($4, $7, $3)))
MYSQL_YYABORT; MYSQL_YYABORT;
} }
| ALTER INDEX_SYM ident ignorability | ALTER key_or_index ident ignorability
{ {
LEX *lex= Lex; LEX *lex= Lex;
Alter_index_ignorability *ac= new (thd->mem_root) Alter_index_ignorability *ac= new (thd->mem_root)