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Some fixes in CASE.

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Test suit was extended to conver various arguments mixes.
This commit is contained in:
bar@bar.mysql.r18.ru
2003-07-18 12:42:35 +05:00
parent bdeb6fe2fb
commit ccece982fb
3 changed files with 84 additions and 6 deletions
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46
mysql-test/r/case.result
View File

@ -10,10 +10,10 @@ CASE "c" when "a" then 1 when "b" then 2 ELSE 3 END
3
select CASE BINARY "b" when "a" then 1 when "B" then 2 WHEN "b" then "ok" END;
CASE BINARY "b" when "a" then 1 when "B" then 2 WHEN "b" then "ok" END
0
ok
select CASE "b" when "a" then 1 when binary "B" then 2 WHEN "b" then "ok" END;
CASE "b" when "a" then 1 when binary "B" then 2 WHEN "b" then "ok" END
0
ok
select CASE concat("a","b") when concat("ab","") then "a" when "b" then "b" end;
CASE concat("a","b") when concat("ab","") then "a" when "b" then "b" end
a
@ -72,6 +72,48 @@ yellow
green
drop table t1;
SET NAMES latin1;
CREATE TABLE t1 SELECT
CASE WHEN 1 THEN _latin1'a' COLLATE latin1_danish_ci ELSE _latin1'a' END AS c1,
CASE WHEN 1 THEN _latin1'a' ELSE _latin1'a' COLLATE latin1_danish_ci END AS c2,
CASE WHEN 1 THEN 'a' ELSE 1 END AS c3,
CASE WHEN 1 THEN 1 ELSE 'a' END AS c4,
CASE WHEN 1 THEN 'a' ELSE 1.0 END AS c5,
CASE WHEN 1 THEN 1.0 ELSE 'a' END AS c6,
CASE WHEN 1 THEN 1 ELSE 1.0 END AS c7,
CASE WHEN 1 THEN 1.0 ELSE 1 END AS c8
;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` char(1) character set latin1 collate latin1_danish_ci default NULL,
`c2` char(1) character set latin1 collate latin1_danish_ci default NULL,
`c3` char(1) default NULL,
`c4` char(1) default NULL,
`c5` char(3) default NULL,
`c6` char(3) default NULL,
`c7` double(3,1) default NULL,
`c8` double(3,1) default NULL
) TYPE=MyISAM CHARSET=latin1
DROP TABLE t1;
SELECT CASE
WHEN 1
THEN _latin1'a' COLLATE latin1_danish_ci
ELSE _latin1'a' COLLATE latin1_swedish_ci
END;
ERROR HY000: Illegal mix of collations (latin1_danish_ci,EXPLICIT) and (latin1_swedish_ci,EXPLICIT) for operation 'case'
SELECT CASE _latin1'a' COLLATE latin1_general_ci
WHEN _latin1'a' COLLATE latin1_danish_ci THEN 1
WHEN _latin1'a' COLLATE latin1_swedish_ci THEN 2
END;
ERROR HY000: Illegal mix of collations (latin1_general_ci,EXPLICIT), (latin1_danish_ci,EXPLICIT), (latin1_swedish_ci,EXPLICIT) for operation 'case'
SELECT
CASE _latin1'a' COLLATE latin1_general_ci WHEN _latin1'A' THEN '1' ELSE 2 END,
CASE _latin1'a' COLLATE latin1_bin WHEN _latin1'A' THEN '1' ELSE 2 END,
CASE _latin1'a' WHEN _latin1'A' COLLATE latin1_swedish_ci THEN '1' ELSE 2 END,
CASE _latin1'a' WHEN _latin1'A' COLLATE latin1_bin THEN '1' ELSE 2 END
;
CASE _latin1'a' COLLATE latin1_general_ci WHEN _latin1'A' THEN '1' ELSE 2 END CASE _latin1'a' COLLATE latin1_bin WHEN _latin1'A' THEN '1' ELSE 2 END CASE _latin1'a' WHEN _latin1'A' COLLATE latin1_swedish_ci THEN '1' ELSE 2 END CASE _latin1'a' WHEN _latin1'A' COLLATE latin1_bin THEN '1' ELSE 2 END
1 2 1 2
CREATE TABLE t1 SELECT COALESCE(_latin1'a',_latin2'a');
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (latin2_general_ci,COERCIBLE) for operation 'coalesce'
CREATE TABLE t1 SELECT COALESCE('a' COLLATE latin1_swedish_ci,'b' COLLATE latin1_bin);

39
mysql-test/t/case.test
View File

@ -42,6 +42,44 @@ insert into t1 values (1,1,'orange'),(1,2,'large'),(2,1,'yellow'),(2,2,'medium')
select max(case col when 1 then val else null end) as color from t1 group by row;
drop table t1;
SET NAMES latin1;
#
# CASE and argument types/collations aggregation into result
#
CREATE TABLE t1 SELECT
CASE WHEN 1 THEN _latin1'a' COLLATE latin1_danish_ci ELSE _latin1'a' END AS c1,
CASE WHEN 1 THEN _latin1'a' ELSE _latin1'a' COLLATE latin1_danish_ci END AS c2,
CASE WHEN 1 THEN 'a' ELSE 1 END AS c3,
CASE WHEN 1 THEN 1 ELSE 'a' END AS c4,
CASE WHEN 1 THEN 'a' ELSE 1.0 END AS c5,
CASE WHEN 1 THEN 1.0 ELSE 'a' END AS c6,
CASE WHEN 1 THEN 1 ELSE 1.0 END AS c7,
CASE WHEN 1 THEN 1.0 ELSE 1 END AS c8
;
SHOW CREATE TABLE t1;
DROP TABLE t1;
--error 1265
SELECT CASE
WHEN 1
THEN _latin1'a' COLLATE latin1_danish_ci
ELSE _latin1'a' COLLATE latin1_swedish_ci
END;
--error 1268
SELECT CASE _latin1'a' COLLATE latin1_general_ci
WHEN _latin1'a' COLLATE latin1_danish_ci THEN 1
WHEN _latin1'a' COLLATE latin1_swedish_ci THEN 2
END;
SELECT
CASE _latin1'a' COLLATE latin1_general_ci WHEN _latin1'A' THEN '1' ELSE 2 END,
CASE _latin1'a' COLLATE latin1_bin WHEN _latin1'A' THEN '1' ELSE 2 END,
CASE _latin1'a' WHEN _latin1'A' COLLATE latin1_swedish_ci THEN '1' ELSE 2 END,
CASE _latin1'a' WHEN _latin1'A' COLLATE latin1_bin THEN '1' ELSE 2 END
;
#
# COALESCE is a CASE abbrevation:
#
@ -52,7 +90,6 @@ drop table t1;
#
# Check COALESCE argument types aggregation
SET NAMES latin1;
--error 1265
CREATE TABLE t1 SELECT COALESCE(_latin1'a',_latin2'a');
--error 1265