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Fix for BUG#4488: first portion: sign aware '<' and '>' comparisons.

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unknown
2004-08-11 23:08:20 +04:00
parent cffa34d9fb
commit b37a736110
5 changed files with 210 additions and 2 deletions
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77
mysql-test/r/range.result
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@ -475,3 +475,80 @@ id name uid id name uid
1025 Y 25 1025 Y 25
1026 Z 26 1026 Z 26
drop table t1,t2;
create table t1 (x bigint unsigned not null);
insert into t1(x) values (0xfffffffffffffff0);
insert into t1(x) values (0xfffffffffffffff1);
select * from t1;
x
18446744073709551600
18446744073709551601
select count(*) from t1 where x>0;
count(*)
2
select count(*) from t1 where x=0;
count(*)
0
select count(*) from t1 where x<0;
count(*)
0
select count(*) from t1 where x < -16;
count(*)
0
select count(*) from t1 where x = -16;
count(*)
0
select count(*) from t1 where x > -16;
count(*)
2
create table t2 (x bigint not null);
insert into t2(x) values (0xfffffffffffffff0);
insert into t2(x) values (0xfffffffffffffff1);
select * from t2;
x
-16
-15
select count(*) from t2 where x>0;
count(*)
0
select count(*) from t2 where x=0;
count(*)
0
select count(*) from t2 where x<0;
count(*)
2
select count(*) from t2 where x < -16;
count(*)
0
select count(*) from t2 where x = -16;
count(*)
1
select count(*) from t2 where x > -16;
count(*)
1
drop table t1;
create table t1 (x bigint unsigned not null primary key) engine=innodb;
insert into t1(x) values (0xfffffffffffffff0);
insert into t1(x) values (0xfffffffffffffff1);
select * from t1;
x
18446744073709551600
18446744073709551601
select count(*) from t1 where x>0;
count(*)
2
select count(*) from t1 where x=0;
count(*)
0
select count(*) from t1 where x<0;
count(*)
0
select count(*) from t1 where x < -16;
count(*)
0
select count(*) from t1 where x = -16;
count(*)
0
select count(*) from t1 where x > -16;
count(*)
1
drop table t1;