compare.test

来自「这是linux下运行的mysql软件包,可用于linux 下安装 php + m」· TEST 代码 · 共 40 行

#
# Bug when using comparions of strings and integers.
#

--disable_warnings
drop table if exists t1;
--enable_warnings

CREATE TABLE t1 (id CHAR(12) not null, PRIMARY KEY (id));
insert into t1 values ('000000000001'),('000000000002');
explain select * from t1 where id=000000000001;
select * from t1 where id=000000000001;
delete from t1 where id=000000000002;
select * from t1;
drop table t1;

#
# Check the following:
# "a"  == "a "
# "a\0" < "a"
# "a\0" < "a "

SELECT 'a' = 'a ';
SELECT 'a\0' < 'a';
SELECT 'a\0' < 'a ';
SELECT 'a\t' < 'a';
SELECT 'a\t' < 'a ';

CREATE TABLE t1 (a char(10) not null);
INSERT INTO t1 VALUES ('a'),('a\0'),('a\t'),('a ');
SELECT hex(a),STRCMP(a,'a'), STRCMP(a,'a ') FROM t1;
DROP TABLE t1;

# Bug #8134: Comparison against CHAR(31) at end of string
SELECT CHAR(31) = '', '' = CHAR(31);
# Extra test
SELECT CHAR(30) = '', '' = CHAR(30);

# End of 4.1 tests