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Fix for BUG#18025: Wrong query results because of bugs in partition pruning:

Browse source 
- Fix typo bug in SEL_ARG::is_singlepoint()
 - In set_up_range_analysis_info(), treat MEDIUMINT as enumerable type just like other integer types


mysql-test/r/partition_pruning.result:
  Testcase for BUG#18025
mysql-test/t/partition_pruning.test:
  Testcase for BUG#18025
sql/opt_range.cc:
  BUG#18025: Fix a typo bug in SEL_ARG::is_singlepoint()
sql/sql_partition.cc:
  BUG#18025: In set_up_range_analysis_info(), treat MEDIUMINT as enumerable type just like other integer types.
This commit is contained in:
unknown 2006-03-31 15:17:15 +04:00
parent b002c11756
commit 457510903f
4 changed files with 72 additions and 1 deletions
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38
mysql-test/r/partition_pruning.result
View file

@ -545,3 +545,41 @@ show status like 'Handler_read_next';
Variable_name Value
Handler_read_next 0
drop table t1, t2;
create table t1 ( f_int1 mediumint, f_int2 integer)
partition by list(mod(f_int1,4)) (
partition p_3 values in (-3),
partition p_2 values in (-2),
partition p_1 values in (-1),
partition p0 values in (0),
partition p1 values in (1),
partition p2 values in (2),
partition p3 values in (3)
);
insert into t1 values (9, 9), (8, 8), (7, 7), (6, 6), (5, 5),
(4, 4), (3, 3), (2, 2), (1, 1);
select * from t1 where f_int1 between 5 and 15 order by f_int1;
f_int1 f_int2
5 5
6 6
7 7
8 8
9 9
drop table t1;
create table t1 (a char(10)) partition by list(length(a)) (
partition p1 values in (1),
partition p2 values in (2),
partition p3 values in (3),
partition p4 values in (4),
partition p5 values in (5)
);
insert into t1 values ('a'),('bb'),('ccc'),('dddd'),('eeEee');
select * from t1 where a>='a' and a <= 'dddd';
a
a
bb
ccc
dddd
explain partitions select * from t1 where a>='a' and a <= 'dddd';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2,p3,p4,p5 ALL NULL NULL NULL NULL 5 Using where
drop table t1;

32
mysql-test/t/partition_pruning.test
View file

@ -447,5 +447,37 @@ show status like 'Handler_read_next';
drop table t1, t2;
# BUG#18025
# part1: mediumint columns
create table t1 ( f_int1 mediumint, f_int2 integer)
partition by list(mod(f_int1,4)) (
partition p_3 values in (-3),
partition p_2 values in (-2),
partition p_1 values in (-1),
partition p0 values in (0),
partition p1 values in (1),
partition p2 values in (2),
partition p3 values in (3)
);
insert into t1 values (9, 9), (8, 8), (7, 7), (6, 6), (5, 5),
(4, 4), (3, 3), (2, 2), (1, 1);
select * from t1 where f_int1 between 5 and 15 order by f_int1;
drop table t1;
# part2: bug in pruning code
create table t1 (a char(10)) partition by list(length(a)) (
partition p1 values in (1),
partition p2 values in (2),
partition p3 values in (3),
partition p4 values in (4),
partition p5 values in (5)
);
insert into t1 values ('a'),('bb'),('ccc'),('dddd'),('eeEee');
select * from t1 where a>='a' and a <= 'dddd';
explain partitions select * from t1 where a>='a' and a <= 'dddd';
drop table t1;
# No tests for NULLs in RANGE(monotonic_expr()) - they depend on BUG#15447
# being fixed.

2
sql/opt_range.cc
View file

@ -339,7 +339,7 @@ public:
if (min_flag || max_flag)
return FALSE;
byte *min_val= (byte *)min_value;
byte *max_val= (byte *)min_value;
byte *max_val= (byte *)max_value;
if (maybe_null)
{

1
sql/sql_partition.cc
View file

@ -5643,6 +5643,7 @@ static void set_up_range_analysis_info(partition_info *part_info)
switch (field->type()) {
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_INT24:
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_LONGLONG:
part_info->get_part_iter_for_interval=