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When we cast datetime value to DATE (TIME) type we should throw away its time (date) part. This was not done properly if CAST() function was used in datetime expressions. mysql-test/r/cast.result: Added test for bug #6914 "Problems using time()/date() output in expressions". mysql-test/t/cast.test: Added test for bug #6914 "Problems using time()/date() output in expressions". sql/item_timefunc.cc: Item_time_typecast::get_time()/Item_date_typecast::get_date(): When we cast datetime value to DATE we should throw away its time part. When we cast such value to TIME type we should throw away its date part.
120 lines
3.9 KiB
Text
120 lines
3.9 KiB
Text
#
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# Test of cast function
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#
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select CAST(1-2 AS UNSIGNED);
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select CAST(CAST(1-2 AS UNSIGNED) AS SIGNED INTEGER);
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select CONVERT('-1',UNSIGNED);
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select cast(-5 as unsigned) | 1, cast(-5 as unsigned) & -1;
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select cast(-5 as unsigned) -1, cast(-5 as unsigned) + 1;
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select ~5, cast(~5 as signed);
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explain extended select ~5, cast(~5 as signed);
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select cast(5 as unsigned) -6.0;
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select cast(NULL as signed), cast(1/0 as signed);
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select cast(NULL as unsigned), cast(1/0 as unsigned);
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select cast("A" as binary) = "a", cast(BINARY "a" as CHAR) = "A";
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select cast("2001-1-1" as DATE), cast("2001-1-1" as DATETIME);
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select cast("1:2:3" as TIME);
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select CONVERT("2004-01-22 21:45:33",DATE);
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select CONVERT(DATE "2004-01-22 21:45:33" USING latin1);
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select CONVERT(DATE "2004-01-22 21:45:33",CHAR);
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select CONVERT(DATE "2004-01-22 21:45:33",CHAR(4));
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select CONVERT(DATE "2004-01-22 21:45:33",BINARY(4));
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select CAST(DATE "2004-01-22 21:45:33" AS BINARY(4));
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#
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# Character set convertion
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#
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set names binary;
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select cast(_latin1'test' as char character set latin2);
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select cast(_koi8r'ÔÅÓÔ' as char character set cp1251);
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create table t1 select cast(_koi8r'ÔÅÓÔ' as char character set cp1251) as t;
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show create table t1;
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drop table t1;
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#
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# CAST to CHAR with/without length
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#
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select
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cast(_latin1'ab' AS char) as c1,
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cast(_latin1'a ' AS char) as c2,
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cast(_latin1'abc' AS char(2)) as c3,
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cast(_latin1'a ' AS char(2)) as c4,
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cast(_latin1'a' AS char(2)) as c5;
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create table t1 select
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cast(_latin1'ab' AS char) as c1,
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cast(_latin1'a ' AS char) as c2,
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cast(_latin1'abc' AS char(2)) as c3,
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cast(_latin1'a ' AS char(2)) as c4,
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cast(_latin1'a' AS char(2)) as c5;
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select * from t1;
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show create table t1;
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drop table t1;
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#
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# CAST to NCHAR with/without length
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#
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select
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cast(_koi8r'ÆÇ' AS nchar) as c1,
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cast(_koi8r'Æ ' AS nchar) as c2,
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cast(_koi8r'ÆÇÈ' AS nchar(2)) as c3,
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cast(_koi8r'Æ ' AS nchar(2)) as c4,
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cast(_koi8r'Æ' AS nchar(2)) as c5;
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create table t1 select
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cast(_koi8r'ÆÇ' AS nchar) as c1,
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cast(_koi8r'Æ ' AS nchar) as c2,
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cast(_koi8r'ÆÇÈ' AS nchar(2)) as c3,
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cast(_koi8r'Æ ' AS nchar(2)) as c4,
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cast(_koi8r'Æ' AS nchar(2)) as c5;
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select * from t1;
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show create table t1;
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drop table t1;
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#
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# Bug 2202
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# CAST from BINARY to non-BINARY and from non-BINARY to BINARY
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#
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create table t1 (a binary(10), b char(10) character set koi8r);
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insert into t1 values (_binary'ÔÅÓÔ',_binary'ÔÅÓÔ');
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select a,b,cast(a as char character set cp1251),cast(b as binary) from t1;
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set names koi8r;
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select a,b,cast(a as char character set cp1251),cast(b as binary) from t1;
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set names cp1251;
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select a,b,cast(a as char character set cp1251),cast(b as binary) from t1;
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drop table t1;
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set names binary;
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#
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# The following should be fixed in 4.1
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#
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select cast("2001-1-1" as date) = "2001-01-01";
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select cast("2001-1-1" as datetime) = "2001-01-01 00:00:00";
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select cast("1:2:3" as TIME) = "1:02:03";
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select cast(NULL as DATE);
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select cast(NULL as BINARY);
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#
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# Bug #5228 ORDER BY CAST(enumcol) sorts incorrectly under certain conditions
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#
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CREATE TABLE t1 (a enum ('aac','aab','aaa') not null);
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INSERT INTO t1 VALUES ('aaa'),('aab'),('aac');
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# these two should be in enum order
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SELECT a, CAST(a AS CHAR) FROM t1 ORDER BY CAST(a AS UNSIGNED) ;
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SELECT a, CAST(a AS CHAR(3)) FROM t1 ORDER BY CAST(a AS CHAR(2)), a;
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# these two should be in alphabetic order
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SELECT a, CAST(a AS UNSIGNED) FROM t1 ORDER BY CAST(a AS CHAR) ;
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SELECT a, CAST(a AS CHAR(2)) FROM t1 ORDER BY CAST(a AS CHAR(3)), a;
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DROP TABLE t1;
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#
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# Test for bug #6914 "Problems using time()/date() output in expressions".
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# When we are casting datetime value to DATE/TIME we should throw away
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# time/date parts (correspondingly).
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#
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select date_add(cast('2004-12-30 12:00:00' as date), interval 0 hour);
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select timediff(cast('2004-12-30 12:00:00' as time), '12:00:00');
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# Still we should not throw away "days" part of time value
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select timediff(cast('1 12:00:00' as time), '12:00:00');
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