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mariadb/mysql-test/t/cast.test
Alexander Barkov ebb8c9fb26 MDEV-11030 Assertion `precision > 0' failed in decimal_bin_size 
Fixing Item::decimal_precision() to return at least one digit.
This fixes the problem reported in MDEV.

Also, fixing Item_func_signed::fix_length_and_dec() to reserve
space for at least one digit (plus one character for an optional sign).
This is needed to have CONVERT(expr,SIGNED) and CONVERT(expr,UNSIGNED)
create correct string fields when they appear in string context, e.g.:
  CREATE TABLE t1 AS SELECT CONCAT(CONVERT('',SIGNED));
2017-01-12 16:37:58 +04:00

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#
# Test of cast function
#
# For TIME->DATETIME conversion
SET timestamp=unix_timestamp('2001-02-03 10:20:30');
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(18446744073709551615 as signed);
select cast(5 as unsigned) -6.0;
select cast(NULL as signed), cast(1/0 as signed);
select cast(1 as double(5,2));
select cast("5.2222" as double(5,2));
select cast(12.444 as double(5,2));
select cast(cast(12.444 as decimal(10,3)) as double(5,2));
select cast(null as double(5,2));
select cast(12.444 as double);
select cast(cast("20:01:01" as time) as datetime);
select cast(cast("8:46:06.23434" AS time) as decimal(32,10));
select cast(cast("2011-04-05 8:46:06.23434" AS datetime) as decimal(32,6));
--echo #
--echo # Check handling of cast with microseconds
--echo #
select cast(cast(20010203101112.121314 as double) as datetime);
select cast(cast(010203101112.12 as double) as datetime);
select cast(cast(20010203101112.121314 as decimal(32,6)) as datetime);
select cast(20010203101112.121314 as datetime);
select cast(110203101112.121314 as datetime);
select cast(cast(010203101112.12 as double) as datetime);
select cast("2011-02-03 10:11:12.123456" as datetime);
select cast("2011-02-03 10:11:12.123456" as datetime(0));
select cast("2011-02-03 10:11:12.123456" as datetime(5));
select cast("2011-02-03 10:11:12.123456" as datetime(6));
select cast("2011-02-03 10:11:12" as datetime(6));
select cast(cast(20010203101112.5 as double) as datetime(1));
select cast(cast(010203101112.12 as double) as datetime(2));
select cast(cast(20010203101112.121314 as decimal(32,6)) as datetime(6));
select cast(20010203101112.121314 as datetime(6));
select cast(110203101112.121314 as datetime(6));
select cast(cast(010203101112.12 as double) as datetime(6));
select cast("2011-02-03 10:11:12.123456" as time);
select cast("2011-02-03 10:11:12.123456" as time(6));
select cast("10:11:12.123456" as time);
select cast("10:11:12.123456" as time(0));
select cast("10:11:12.123456" as time(5));
select cast("10:11:12.123456" as time(6));
select cast("10:11:12" as time(6));
select cast(cast("2011-04-05 8:46:06.123456" AS datetime) as time);
select cast(cast("2011-04-05 8:46:06.123456" AS datetime) as time(6));
select cast(cast("2011-04-05 8:46:06.123456" AS datetime(6)) as time);
select cast(cast("2011-04-05 8:46:06.123456" AS datetime(6)) as time(6));
#
# 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(TIMESTAMP "2004-01-22 21:45:33" USING latin1);
select CONVERT(TIMESTAMP "2004-01-22 21:45:33",CHAR);
select CONVERT(TIMESTAMP "2004-01-22 21:45:33",CHAR(4));
select CONVERT(TIMESTAMP "2004-01-22 21:45:33",BINARY(4));
select CAST(TIMESTAMP "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';
select cast("a" as double(5,2));
select cast(1000 as decimal(5,2));
select cast(-1000 as decimal(5,2));
select cast(1000 as double(5,2));
select cast(-1000 as double(5,2));
select cast(010203101112.121314 as datetime);
select cast(120010203101112.121314 as datetime);
select cast(cast(1.1 as decimal) as datetime);
select cast(cast(-1.1 as decimal) as datetime);
select cast('0' as date);
select cast('' as date);
select cast('0' as datetime);
select cast('' as datetime);
select cast('0' as time);
select cast('' as time);
select cast(NULL as DATE);
select cast(NULL as DATETIME);
select cast(NULL as TIME);
select cast(NULL as BINARY);
#
# We have to disable warnings for these as the printed double value is
# not portable
#
--disable_warnings
select cast(cast(120010203101112.121314 as double) as datetime);
select cast(cast(1.1 as double) as datetime);
select cast(cast(-1.1 as double) as datetime);
--enable_warnings
#
# Some EXPLAIN EXTENDED to ensure the print functions are correct
#
explain extended select cast(10 as double(5,2));
explain extended select cast(10 as double);
explain extended select cast(10 as decimal(5,2));
# 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);
--error ER_M_BIGGER_THAN_D
select cast(1 as double(5,6));
--error ER_M_BIGGER_THAN_D
select cast(1 as decimal(5,6));
--error ER_TOO_BIG_PRECISION
select cast(1 as double(66,6));
--error ER_TOO_BIG_PRECISION
select cast(1 as decimal(66,6));
--error ER_TOO_BIG_SCALE
select cast(1 as decimal(64,63));
--error ER_TOO_BIG_SCALE
select cast(1 as double(64,63));
#
# Character set conversion
#
set names binary;
select cast(_latin1'test' as char character set latin2);
select cast(_koi8r'<27><><EFBFBD><EFBFBD>' as char character set cp1251);
create table t1 select cast(_koi8r'<27><><EFBFBD><EFBFBD>' 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'<27><>' AS nchar) as c1,
cast(_koi8r'<27> ' AS nchar) as c2,
cast(_koi8r'<27><><EFBFBD>' AS nchar(2)) as c3,
cast(_koi8r'<27> ' AS nchar(2)) as c4,
cast(_koi8r'<27>' AS nchar(2)) as c5;
create table t1 select
cast(_koi8r'<27><>' AS nchar) as c1,
cast(_koi8r'<27> ' AS nchar) as c2,
cast(_koi8r'<27><><EFBFBD>' AS nchar(2)) as c3,
cast(_koi8r'<27> ' AS nchar(2)) as c4,
cast(_koi8r'<27>' 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'<27><><EFBFBD><EFBFBD>',_binary'<27><><EFBFBD><EFBFBD>');
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";
#
# 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);
#
# Test that we create the correct types with create ... select cast()
#
create table t1 select cast(1 as unsigned), cast(1 as signed), cast(1 as double(5,2)), cast(1 as decimal(5,3)), cast("A" as binary), cast("A" as char(100)), cast("2001-1-1" as DATE), cast("2001-1-1" as DATETIME), cast("1:2:3" as TIME);
show create table t1;
drop table t1;
#
# 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 #
--echo # Bug #11765023: 57934: DOS POSSIBLE SINCE BINARY CASTING
--echo # DOESN'T ADHERE TO MAX_ALLOWED_PACKET
SET @@GLOBAL.max_allowed_packet=2048;
# reconnect to make the new max packet size take effect
--connect (newconn, localhost, root,,)
SELECT CONVERT('a', BINARY(2049));
SELECT CONVERT('a', CHAR(2049));
SELECT length(CONVERT(repeat('a',2048), CHAR(2049)));
connection default;
disconnect newconn;
SET @@GLOBAL.max_allowed_packet=default;
--echo #
--echo # Bug#13519724 63793: CRASH IN DTCOLLATION::SET(DTCOLLATION &SET)
--echo #
CREATE TABLE t1 (a VARCHAR(50));
SELECT a FROM t1
WHERE CAST(a as BINARY)=x'62736D697468'
AND CAST(a AS BINARY)=x'65736D697468';
DROP TABLE t1;
--echo #
--echo # Bug#13581962 HIGH MEMORY USAGE ATTEMPT, THEN CRASH WITH
--echo # LONGTEXT, UNION, USER VARIABLE
--echo # Bug#14096619 UNABLE TO RESTORE DATABASE DUMP
--echo #
CREATE TABLE t1 AS SELECT CONCAT(CAST(REPEAT('9', 1000) AS SIGNED)),
CONCAT(CAST(REPEAT('9', 1000) AS UNSIGNED));
SHOW CREATE TABLE t1;
DROP TABLE t1;
--echo # End of test for Bug#13581962, Bug#14096619
--echo End of 5.1 tests
select cast("2101-00-01 02:03:04" as datetime);
select cast(cast("2101-00-01 02:03:04" as datetime) as time);
SELECT CAST(CAST('20:05:05' AS TIME) as date);
set sql_mode= TRADITIONAL;
select cast("2101-00-01 02:03:04" as datetime);
select cast(cast("2101-00-01 02:03:04" as datetime) as time);
SELECT CAST(CAST('20:05:05' AS TIME) as date);
set sql_mode=DEFAULT;
#
# lp:737458 Casting dates and times into integers works differently
# in 5.1-micro
#
create table t1 (f1 time, f2 date, f3 datetime);
insert into t1 values ('11:22:33','2011-12-13','2011-12-13 11:22:33');
select cast(f1 as unsigned), cast(f2 as unsigned), cast(f3 as unsigned) from t1;
drop table t1;
#
# CAST(... AS DATE) and invalid dates
#
SELECT CAST(TIME('10:20:30') AS DATE) + INTERVAL 1 DAY;
SET SQL_MODE=ALLOW_INVALID_DATES;
SELECT DATE("foo");
#
# CAST and field definition using same fields in LEX
#
create table t1 (a int, b char(5) as (cast("a" as char(10) binary) + a) );
show create table t1;
drop table t1;
#
# CAST (... BINARY)
#
select collation(cast("a" as char(10) binary));
select collation(cast("a" as char(10) charset utf8 binary));
select collation(cast("a" as char(10) ascii binary));
select collation(cast("a" as char(10) binary charset utf8));
select collation(cast("a" as char(10) binary ascii));
--echo #
--echo # MDEV-11030 Assertion `precision > 0' failed in decimal_bin_size
--echo #
SELECT * FROM (SELECT IFNULL(CONVERT(NULL, UNSIGNED), NULL)) sq;
CREATE TABLE t1 AS SELECT IFNULL(CONVERT(NULL, UNSIGNED), NULL);
SHOW CREATE TABLE t1;
DROP TABLE t1;
CREATE TABLE t1 AS SELECT COALESCE(CONVERT(NULL, UNSIGNED), NULL);
SHOW CREATE TABLE t1;
DROP TABLE t1;
CREATE TABLE t1 AS SELECT CASE WHEN TRUE THEN CONVERT(NULL, UNSIGNED) ELSE NULL END;
SHOW CREATE TABLE t1;
DROP TABLE t1;
CREATE TABLE t1 AS SELECT IFNULL(CONVERT(NULL,SIGNED),CONVERT(NULL,UNSIGNED)) AS a;
SHOW CREATE TABLE t1;
DROP TABLE t1;
CREATE TABLE t1 AS SELECT
-1,
CONVERT(NULL,SIGNED),
CONCAT(CONVERT(NULL,SIGNED)),
1,
CONVERT(NULL,UNSIGNED),
CONCAT(CONVERT(NULL,UNSIGNED));
SHOW CREATE TABLE t1;
DROP TABLE t1;
CREATE TABLE t1 AS SELECT
CONVERT('',SIGNED),
CONCAT(CONVERT('',SIGNED)),
CONVERT('',UNSIGNED),
CONCAT(CONVERT('',UNSIGNED));
SHOW CREATE TABLE t1;
DROP TABLE t1;
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