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In CREATE syntax: KEY a (field_name(10))

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10 now means "number of characters", not number of bytes.
This commit is contained in:
bar@bar.mysql.r18.ru
2003-09-15 14:45:42 +05:00
parent 9a5e82ad64
commit f55b05e2cf
4 changed files with 51 additions and 3 deletions
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31
mysql-test/r/ctype_mb.result
View File

@ -19,3 +19,34 @@ SELECT * FROM t1;
c1 c2 c3
aaaabbbbcccc aaaabbbbcccc aaaabbbbcccc
DROP TABLE t1;
CREATE TABLE t1 (a CHAR(4) CHARACTER SET utf8, KEY key_a(a(3)));
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(4) character set utf8 default NULL,
KEY `key_a` (`a`(3))
) TYPE=MyISAM CHARSET=latin1
SHOW KEYS FROM t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
t1 1 key_a 1 a A NULL 9 NULL YES BTREE
ALTER TABLE t1 CHANGE a a CHAR(4);
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(4) default NULL,
KEY `key_a` (`a`(3))
) TYPE=MyISAM CHARSET=latin1
SHOW KEYS FROM t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
t1 1 key_a 1 a A NULL 3 NULL YES BTREE
ALTER TABLE t1 CHANGE a a CHAR(4) CHARACTER SET utf8;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(4) character set utf8 default NULL,
KEY `key_a` (`a`(3))
) TYPE=MyISAM CHARSET=latin1
SHOW KEYS FROM t1;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
t1 1 key_a 1 a A NULL 9 NULL YES BTREE
DROP TABLE t1;

11
mysql-test/t/ctype_mb.test
View File

@ -6,3 +6,14 @@ SHOW CREATE TABLE t1;
INSERT INTO t1 VALUES ('aaaabbbbccccdddd','aaaabbbbccccdddd','aaaabbbbccccdddd');
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 (a CHAR(4) CHARACTER SET utf8, KEY key_a(a(3)));
SHOW CREATE TABLE t1;
SHOW KEYS FROM t1;
ALTER TABLE t1 CHANGE a a CHAR(4);
SHOW CREATE TABLE t1;
SHOW KEYS FROM t1;
ALTER TABLE t1 CHANGE a a CHAR(4) CHARACTER SET utf8;
SHOW CREATE TABLE t1;
SHOW KEYS FROM t1;
DROP TABLE t1;