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drop table if exists t1;
SET SQL_WARNINGS=1;
create table t1 (this int unsigned);
insert into t1 values (1);
insert into t1 values (-1);
Warnings:
Warning 1264 Out of range value for column 'this' at row 1
insert into t1 values ('5000000000');
Warnings:
Warning 1264 Out of range value for column 'this' at row 1
select * from t1;
this
1
0
4294967295
drop table t1;
create table t1 (a bigint unsigned, b mediumint unsigned);
insert t1 values (1,2),(0xffffffffffffffff,0xffffff);
select coalesce(a,b), coalesce(b,a) from t1;
coalesce(a,b) coalesce(b,a)
1 2
18446744073709551615 16777215
create table t2 as select a from t1 union select b from t1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` bigint(20) unsigned DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select * from t2;
a
1
18446744073709551615
2
16777215
drop table t1, t2;
#
# Start of 10.0 tests
#
#
# MDEV-6950 Bad results with joins comparing DATE and INT/ENUM/VARCHAR columns
#
CREATE TABLE t1 (a DATE PRIMARY KEY);
INSERT INTO t1 VALUES ('1999-01-01');
CREATE TABLE t2 (a INT UNSIGNED);
INSERT INTO t2 VALUES (19990101);
INSERT INTO t2 VALUES (990101);
SELECT t1.* FROM t1,t2 WHERE t1.a=t2.a;
a
1999-01-01
1999-01-01
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a=t2.a;
a
1999-01-01
1999-01-01
ALTER TABLE t2 ADD PRIMARY KEY(a);
SELECT t1.* FROM t1,t2 WHERE t1.a=t2.a;
a
1999-01-01
1999-01-01
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a=t2.a;
a
1999-01-01
1999-01-01
# t2 should NOT be eliminated
EXPLAIN SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1
1 SIMPLE t2 index PRIMARY PRIMARY 4 NULL 2 Using where; Using index
DROP TABLE t1,t2;
#
# End of 10.0 tests
#
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