mariadb/mysql-test/t/cast.test
Alexey Kopytov 12f364ece7 Backport of WL #2934: Make/find library for doing float/double
to string conversions and vice versa" 
Initial import of the dtoa.c code and custom wrappers around it 
to allow its usage from the server code. 
 
Conversion of FLOAT/DOUBLE values to DECIMAL ones or strings 
and vice versa has been significantly reworked. As the new 
algoritms are more precise than the older ones, results of such 
conversions may not always match those obtained from older 
server versions. This in turn may break compatibility for some 
applications. 
 
This patch also fixes the following bugs: 
- bug #12860 "Difference in zero padding of exponent between 
Unix and Windows" 
- bug #21497 "DOUBLE truncated to unusable value" 
- bug #26788 "mysqld (debug) aborts when inserting specific 
numbers into char fields" 
- bug #24541 "Data truncated..." on decimal type columns 
without any good reason"
2009-12-22 19:23:13 +03:00

284 lines
8.2 KiB
Text

#
# Test of cast function
#
select CAST(1-2 AS UNSIGNED);
select CAST(CAST(1-2 AS UNSIGNED) AS SIGNED INTEGER);
select CAST('10 ' as unsigned integer);
select cast(-5 as unsigned) | 1, cast(-5 as unsigned) & -1;
select cast(-5 as unsigned) -1, cast(-5 as unsigned) + 1;
select ~5, cast(~5 as signed);
explain extended select ~5, cast(~5 as signed);
select cast(5 as unsigned) -6.0;
select cast(NULL as signed), cast(1/0 as signed);
#
# Bug #28250: Run-Time Check Failure #3 - The variable 'value' is being used
# without being def
#
# The following line causes Run-Time Check Failure on
# binaries built with Visual C++ 2005
select cast(NULL as unsigned), cast(1/0 as unsigned);
select cast("A" as binary) = "a", cast(BINARY "a" as CHAR) = "A";
select cast("2001-1-1" as DATE), cast("2001-1-1" as DATETIME);
select cast("1:2:3" as TIME);
select CONVERT("2004-01-22 21:45:33",DATE);
select 10+'10';
select 10.0+'10';
select 10E+0+'10';
# The following cast creates warnings
select CONVERT(DATE "2004-01-22 21:45:33" USING latin1);
select CONVERT(DATE "2004-01-22 21:45:33",CHAR);
select CONVERT(DATE "2004-01-22 21:45:33",CHAR(4));
select CONVERT(DATE "2004-01-22 21:45:33",BINARY(4));
select CAST(DATE "2004-01-22 21:45:33" AS BINARY(4));
select CAST(0xb3 as signed);
select CAST(0x8fffffffffffffff as signed);
select CAST(0xffffffffffffffff as unsigned);
select CAST(0xfffffffffffffffe as signed);
select cast('-10a' as signed integer);
select cast('a10' as unsigned integer);
select 10+'a';
select 10.0+cast('a' as decimal);
select 10E+0+'a';
# out-of-range cases
select cast('18446744073709551616' as unsigned);
select cast('18446744073709551616' as signed);
select cast('9223372036854775809' as signed);
select cast('-1' as unsigned);
select cast('abc' as signed);
select cast('1a' as signed);
select cast('' as signed);
#
# Character set conversion
#
set names binary;
select cast(_latin1'test' as char character set latin2);
select cast(_koi8r'ÔÅÓÔ' as char character set cp1251);
create table t1 select cast(_koi8r'ÔÅÓÔ' as char character set cp1251) as t;
show create table t1;
drop table t1;
#
# CAST to CHAR with/without length
#
select
cast(_latin1'ab' AS char) as c1,
cast(_latin1'a ' AS char) as c2,
cast(_latin1'abc' AS char(2)) as c3,
cast(_latin1'a ' AS char(2)) as c4,
hex(cast(_latin1'a' AS char(2))) as c5;
select cast(1000 as CHAR(3));
create table t1 select
cast(_latin1'ab' AS char) as c1,
cast(_latin1'a ' AS char) as c2,
cast(_latin1'abc' AS char(2)) as c3,
cast(_latin1'a ' AS char(2)) as c4,
cast(_latin1'a' AS char(2)) as c5;
select c1,c2,c3,c4,hex(c5) from t1;
show create table t1;
drop table t1;
#
# CAST to NCHAR with/without length
#
select
cast(_koi8r'ÆÇ' AS nchar) as c1,
cast(_koi8r'Æ ' AS nchar) as c2,
cast(_koi8r'ÆÇÈ' AS nchar(2)) as c3,
cast(_koi8r'Æ ' AS nchar(2)) as c4,
cast(_koi8r'Æ' AS nchar(2)) as c5;
create table t1 select
cast(_koi8r'ÆÇ' AS nchar) as c1,
cast(_koi8r'Æ ' AS nchar) as c2,
cast(_koi8r'ÆÇÈ' AS nchar(2)) as c3,
cast(_koi8r'Æ ' AS nchar(2)) as c4,
cast(_koi8r'Æ' AS nchar(2)) as c5;
select * from t1;
show create table t1;
drop table t1;
#
# Bug 2202
# CAST from BINARY to non-BINARY and from non-BINARY to BINARY
#
create table t1 (a binary(4), b char(4) character set koi8r);
insert into t1 values (_binary'ÔÅÓÔ',_binary'ÔÅÓÔ');
select a,b,cast(a as char character set cp1251),cast(b as binary) from t1;
set names koi8r;
select a,b,cast(a as char character set cp1251),cast(b as binary) from t1;
set names cp1251;
select a,b,cast(a as char character set cp1251),cast(b as binary) from t1;
drop table t1;
set names binary;
#
# The following should be fixed in 4.1
#
select cast("2001-1-1" as date) = "2001-01-01";
select cast("2001-1-1" as datetime) = "2001-01-01 00:00:00";
select cast("1:2:3" as TIME) = "1:02:03";
select cast(NULL as DATE);
select cast(NULL as BINARY);
#
# Bug #5228 ORDER BY CAST(enumcol) sorts incorrectly under certain conditions
#
CREATE TABLE t1 (a enum ('aac','aab','aaa') not null);
INSERT INTO t1 VALUES ('aaa'),('aab'),('aac');
# these two should be in enum order
SELECT a, CAST(a AS CHAR) FROM t1 ORDER BY CAST(a AS UNSIGNED) ;
SELECT a, CAST(a AS CHAR(3)) FROM t1 ORDER BY CAST(a AS CHAR(2)), a;
# these two should be in alphabetic order
SELECT a, CAST(a AS UNSIGNED) FROM t1 ORDER BY CAST(a AS CHAR) ;
SELECT a, CAST(a AS CHAR(2)) FROM t1 ORDER BY CAST(a AS CHAR(3)), a;
DROP TABLE t1;
#
# Test for bug #6914 "Problems using time()/date() output in expressions".
# When we are casting datetime value to DATE/TIME we should throw away
# time/date parts (correspondingly).
#
select date_add(cast('2004-12-30 12:00:00' as date), interval 0 hour);
select timediff(cast('2004-12-30 12:00:00' as time), '12:00:00');
# Still we should not throw away "days" part of time value
select timediff(cast('1 12:00:00' as time), '12:00:00');
#
# Bug #7036: Casting from string to unsigned would cap value of result at
# maximum signed value instead of maximum unsigned value
#
select cast(18446744073709551615 as unsigned);
select cast(18446744073709551615 as signed);
select cast('18446744073709551615' as unsigned);
select cast('18446744073709551615' as signed);
select cast('9223372036854775807' as signed);
select cast(concat('184467440','73709551615') as unsigned);
select cast(concat('184467440','73709551615') as signed);
select cast(repeat('1',20) as unsigned);
select cast(repeat('1',20) as signed);
#
# Bug #13344: cast of large decimal to signed int not handled correctly
#
select cast(1.0e+300 as signed int);
#
# Bugs: #15098: CAST(column double TO signed int), wrong result
#
CREATE TABLE t1 (f1 double);
INSERT INTO t1 SET f1 = -1.0e+30 ;
INSERT INTO t1 SET f1 = +1.0e+30 ;
SELECT f1 AS double_val, CAST(f1 AS SIGNED INT) AS cast_val FROM t1;
DROP TABLE t1;
#
# Bug #23938: cast(NULL as DATE)
#
select isnull(date(NULL)), isnull(cast(NULL as DATE));
#
# Bug#23656: Wrong result of CAST from DATE to int
#
SELECT CAST(cast('01-01-01' as date) AS UNSIGNED);
SELECT CAST(cast('01-01-01' as date) AS SIGNED);
--echo End of 4.1 tests
#decimal-related additions
select cast('1.2' as decimal(3,2));
select 1e18 * cast('1.2' as decimal(3,2));
select cast(cast('1.2' as decimal(3,2)) as signed);
set @v1=1e18;
select cast(@v1 as decimal(22, 2));
select cast(-1e18 as decimal(22,2));
create table t1(s1 time);
insert into t1 values ('11:11:11');
select cast(s1 as decimal(7,2)) from t1;
drop table t1;
#
# Test for bug #11283: field conversion from varchar, and text types to decimal
#
CREATE TABLE t1 (v varchar(10), tt tinytext, t text,
mt mediumtext, lt longtext);
INSERT INTO t1 VALUES ('1.01', '2.02', '3.03', '4.04', '5.05');
SELECT CAST(v AS DECIMAL), CAST(tt AS DECIMAL), CAST(t AS DECIMAL),
CAST(mt AS DECIMAL), CAST(lt AS DECIMAL) from t1;
DROP TABLE t1;
#
# Bug #10237 (CAST(NULL DECIMAL) crashes server)
#
select cast(NULL as decimal(6)) as t1;
#
# Bug #17903: cast to char results in binary
#
set names latin1;
select hex(cast('a' as char(2) binary));
select hex(cast('a' as binary(2)));
select hex(cast('a' as char(2) binary));
#
# Bug#29898: Item_date_typecast::val_int doesn't reset the null_value flag.
#
CREATE TABLE t1 (d1 datetime);
INSERT INTO t1(d1) VALUES ('2007-07-19 08:30:00'), (NULL),
('2007-07-19 08:34:00'), (NULL), ('2007-07-19 08:36:00');
SELECT cast(date(d1) as signed) FROM t1;
drop table t1;
#
# Bug #31990: MINUTE() and SECOND() return bogus results when used on a DATE
#
# Show that HH:MM:SS of a DATE are 0, and that it's the same for columns
# and typecasts (NULL in, NULL out).
CREATE TABLE t1 (f1 DATE);
INSERT INTO t1 VALUES ('2007-07-19'), (NULL);
SELECT HOUR(f1),
MINUTE(f1),
SECOND(f1) FROM t1;
SELECT HOUR(CAST('2007-07-19' AS DATE)),
MINUTE(CAST('2007-07-19' AS DATE)),
SECOND(CAST('2007-07-19' AS DATE));
SELECT HOUR(CAST(NULL AS DATE)),
MINUTE(CAST(NULL AS DATE)),
SECOND(CAST(NULL AS DATE));
SELECT HOUR(NULL),
MINUTE(NULL),
SECOND(NULL);
DROP TABLE t1;
--echo End of 5.0 tests
--echo #
--echo # Bug #44766: valgrind error when using convert() in a subquery
--echo #
CREATE TABLE t1(a tinyint);
INSERT INTO t1 VALUES (127);
SELECT 1 FROM
(
SELECT CONVERT(t2.a USING UTF8) FROM t1, t1 t2 LIMIT 1
) AS s LIMIT 1;
DROP TABLE t1;
--echo End of 5.1 tests