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BUG20733: Bug in partition pruning with zerofill field

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Problem was with handling NULL values in ranges
This commit is contained in:
mikael/pappa@dator5.(none)
2006-07-20 05:28:16 -04:00
parent bae61f209d
commit cef004845c
10 changed files with 521 additions and 1 deletions
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44
mysql-test/t/partition_range.test
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@@ -9,6 +9,50 @@
drop table if exists t1;
--enable_warnings
#
# More checks for partition pruning
#
create table t1 (a int unsigned)
partition by range (a)
(partition pnull values less than (0),
partition p0 values less than (1),
partition p1 values less than(2));
insert into t1 values (null),(0),(1);
select * from t1 where a is null;
select * from t1 where a >= 0;
select * from t1 where a < 0;
select * from t1 where a <= 0;
select * from t1 where a > 1;
explain partitions select * from t1 where a is null;
explain partitions select * from t1 where a >= 0;
explain partitions select * from t1 where a < 0;
explain partitions select * from t1 where a <= 0;
explain partitions select * from t1 where a > 1;
drop table t1;
create table t1 (a int unsigned, b int unsigned)
partition by range (a)
subpartition by hash (b)
subpartitions 2
(partition pnull values less than (0),
partition p0 values less than (1),
partition p1 values less than(2));
insert into t1 values (null,0),(null,1),(0,0),(0,1),(1,0),(1,1);
select * from t1 where a is null;
select * from t1 where a >= 0;
select * from t1 where a < 0;
select * from t1 where a <= 0;
select * from t1 where a > 1;
explain partitions select * from t1 where a is null;
explain partitions select * from t1 where a >= 0;
explain partitions select * from t1 where a < 0;
explain partitions select * from t1 where a <= 0;
explain partitions select * from t1 where a > 1;
drop table t1;
#
# Partition by range, basic
#