Commit b92ca9ba authored by unknown's avatar unknown
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Merge spetrunia@bk-internal.mysql.com:/home/bk/mysql-5.1-new 

into  mysql.com:/home/psergey/mysql-5.1-bug18659-pre
parents 68963921 a26509ae

mysql-test/r/partition_pruning.result

+14 −0
Original line number Diff line number Diff line
@@ -583,3 +583,17 @@ 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;

create table t1 (f_int1 integer) partition by list(abs(mod(f_int1,2)))

subpartition by hash(f_int1) subpartitions 2

(

partition part1 values in (0),

partition part2 values in (1),

partition part4 values in (null)

);

insert into t1 set f_int1 = null;

select * from t1 where f_int1 is null;

f_int1

NULL

explain partitions select * from t1 where f_int1 is null;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	part4_p2sp0	system	NULL	NULL	NULL	NULL	1

mysql-test/t/partition_pruning.test

+14 −0
Original line number Diff line number Diff line
@@ -479,5 +479,19 @@ select * from t1 where a>='a' and a <= 'dddd'; 
explain partitions select * from t1 where a>='a' and a <= 'dddd';

drop table t1;



# BUG#18659: Assertion failure when subpartitioning is used and partition is

# "IS NULL"

create table t1 (f_int1 integer) partition by list(abs(mod(f_int1,2)))

  subpartition by hash(f_int1) subpartitions 2

(

  partition part1 values in (0),

  partition part2 values in (1),

  partition part4 values in (null)

);

insert into t1 set f_int1 = null;



select * from t1 where f_int1 is null;

explain partitions select * from t1 where f_int1 is null;



# No tests for NULLs in RANGE(monotonic_expr()) - they depend on BUG#15447

# being fixed.

sql/sql_partition.cc

+5 −1
Original line number Diff line number Diff line
@@ -5521,7 +5521,11 @@ int get_part_iter_for_interval_via_walking(partition_info *part_info, 
    else

    {

      longlong dummy;

      if (!part_info->get_partition_id(part_info, &part_id, &dummy))

      int res= part_info->is_sub_partitioned() ?

                  part_info->get_part_partition_id(part_info, &part_id,

                                                   &dummy):

                  part_info->get_partition_id(part_info, &part_id, &dummy);

      if (!res)

      {

        init_single_partition_iterator(part_id, part_iter);

        return 1; /* Ok, iterator initialized */