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CREATE TABLE t1 SELECT left(_latin2'a',1) didn't work, the charset got lost

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Collation and coercibility tests for string functions
This commit is contained in:
bar@bar.mysql.r18.ru
2003-05-23 11:32:35 +05:00
parent a3db08d44c
commit 8514caa1da
3 changed files with 68 additions and 1 deletions
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42
mysql-test/r/func_str.result
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@@ -249,3 +249,45 @@ INSERT INTO t1 VALUES (1, 'a545f661efdd1fb66fdee3aab79945bf');
SELECT 1 FROM t1 WHERE tmp=AES_DECRYPT(tmp,"password");
1
DROP TABLE t1;
select collation(lcase(_latin2'a')), coercibility(lcase(_latin2'a'));
collation(lcase(_latin2'a')) coercibility(lcase(_latin2'a'))
latin2_general_ci 3
select collation(ucase(_latin2'a')), coercibility(ucase(_latin2'a'));
collation(ucase(_latin2'a')) coercibility(ucase(_latin2'a'))
latin2_general_ci 3
select collation(left(_latin2'a',1)), coercibility(left(_latin2'a',1));
collation(left(_latin2'a',1)) coercibility(left(_latin2'a',1))
latin2_general_ci 3
select collation(right(_latin2'a',1)), coercibility(right(_latin2'a',1));
collation(right(_latin2'a',1)) coercibility(right(_latin2'a',1))
latin2_general_ci 3
select collation(substring(_latin2'a',1,1)), coercibility(substring(_latin2'a',1,1));
collation(substring(_latin2'a',1,1)) coercibility(substring(_latin2'a',1,1))
latin2_general_ci 3
select collation(concat(_latin2'a',_latin2'b')), coercibility(concat(_latin2'a',_latin2'b'));
collation(concat(_latin2'a',_latin2'b')) coercibility(concat(_latin2'a',_latin2'b'))
latin2_general_ci 3
select collation(concat_ws(_latin2'a',_latin2'b')), coercibility(concat_ws(_latin2'a',_latin2'b'));
collation(concat_ws(_latin2'a',_latin2'b')) coercibility(concat_ws(_latin2'a',_latin2'b'))
latin2_general_ci 3
create table t1
select
left(_latin2'a',1),
right(_latin2'a',1),
lcase(_latin2'a'),
ucase(_latin2'a'),
substring(_latin2'a',1,1),
concat(_latin2'a',_latin2'b'),
concat_ws(_latin2'a',_latin2'b');
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`left(_latin2'a',1)` char(1) character set latin2 NOT NULL default '',
`right(_latin2'a',1)` char(1) character set latin2 NOT NULL default '',
`lcase(_latin2'a')` char(1) character set latin2 NOT NULL default '',
`ucase(_latin2'a')` char(1) character set latin2 NOT NULL default '',
`substring(_latin2'a',1,1)` char(1) character set latin2 NOT NULL default '',
`concat(_latin2'a',_latin2'b')` char(2) character set latin2 NOT NULL default '',
`concat_ws(_latin2'a',_latin2'b')` char(1) character set latin2 NOT NULL default ''
) TYPE=MyISAM CHARSET=latin1
drop table t1;

23
mysql-test/t/func_str.test
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@@ -132,3 +132,26 @@ CREATE TABLE t1 (id int(11) NOT NULL auto_increment, tmp text NOT NULL, KEY id (
INSERT INTO t1 VALUES (1, 'a545f661efdd1fb66fdee3aab79945bf');
SELECT 1 FROM t1 WHERE tmp=AES_DECRYPT(tmp,"password");
DROP TABLE t1;
#
# Test collation and coercibility
#
select collation(lcase(_latin2'a')), coercibility(lcase(_latin2'a'));
select collation(ucase(_latin2'a')), coercibility(ucase(_latin2'a'));
select collation(left(_latin2'a',1)), coercibility(left(_latin2'a',1));
select collation(right(_latin2'a',1)), coercibility(right(_latin2'a',1));
select collation(substring(_latin2'a',1,1)), coercibility(substring(_latin2'a',1,1));
select collation(concat(_latin2'a',_latin2'b')), coercibility(concat(_latin2'a',_latin2'b'));
select collation(concat_ws(_latin2'a',_latin2'b')), coercibility(concat_ws(_latin2'a',_latin2'b'));
create table t1
select
left(_latin2'a',1),
right(_latin2'a',1),
lcase(_latin2'a'),
ucase(_latin2'a'),
substring(_latin2'a',1,1),
concat(_latin2'a',_latin2'b'),
concat_ws(_latin2'a',_latin2'b');
show create table t1;
drop table t1;

4
sql/item_strfunc.cc
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@@ -928,7 +928,7 @@ void Item_str_func::left_right_max_length()
max_length=args[0]->max_length;
if (args[1]->const_item())
{
int length=(int) args[1]->val_int()*default_charset_info->mbmaxlen;
int length=(int) args[1]->val_int()*charset()->mbmaxlen;
if (length <= 0)
max_length=0;
else
@@ -939,6 +939,7 @@ void Item_str_func::left_right_max_length()
void Item_func_left::fix_length_and_dec()
{
set_charset(args[0]->charset(), args[0]->coercibility);
left_right_max_length();
}
@@ -965,6 +966,7 @@ String *Item_func_right::val_str(String *str)
void Item_func_right::fix_length_and_dec()
{
set_charset(args[0]->charset(), args[0]->coercibility);
left_right_max_length();
}