mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-02-01 11:31:51 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions
mariadb/mysql-test/t/subselect_partial_match.test
unknown 42221abaed Fix bug lp:869036 
Apart from the fix, the patch also adds few more unrelated test
cases for partial matching, and fixes few typos.

Analysis:
This bug uncovered that partial matching via rowid intersection
didn't handle the case when:
- the left IN argument has some NULLs,
- there are no non-null value matches, and there is no non-null
  column,
- the subquery columns that are not covered with the NULLs in
  the left IN argument contain at least one row, such that it
  has NULL values in all columns where the left IN operand has
  no NULLs.
In this case there is a partial match.

In addition the analysis of the related code uncovered incorrect
handling of few other related cases.

Solution:
The solution for the bug is to check if there exists a row with
NULLs in all columns other than the ones having NULL in the
let IN operand.

The check is implemented via checking whether the bitmaps that
store NULL information in class Ordered_key have a non-empty
intersection for the relevant columns.

The intersection itself is implemented via the function
bitmap_exists_intersection() in my_bitmap.c.
2011-11-17 01:25:10 +02:00

778 lines
28 KiB
Text
Raw Blame History

#
# Tests for
# MWL#68: Subquery optimization: Efficient NOT IN execution with NULLs
#
set @save_optimizer_switch=@@optimizer_switch;
--echo -------------------------------
--echo Part 1: Feature tests.
--echo -------------------------------
--echo Default for all tests.
set @@optimizer_switch = "materialization=on,in_to_exists=off,semijoin=off,subquery_cache=off";
set @test_default_opt_switch = @@optimizer_switch;
set @in_exists = "materialization=off,in_to_exists=on,semijoin=off,subquery_cache=off";
--echo -------------------------------------------------------------------------
--echo Schema requires partial matching, but data analysis discoveres there is
--echo no need. This is possible only if all outer columns are not NULL.
--echo -------------------------------------------------------------------------
create table t1 (a1 char(8) not null, a2 char(8) not null);
create table t2 (b1 char(8), b2 char(8));
insert into t1 values ('1 - 00', '2 - 00');
insert into t1 values ('1 - 01', '2 - 01');
insert into t2 values ('1 - 00', '2 - 00');
insert into t2 values ('1 - 01', NULL );
insert into t2 values (NULL , '2 - 02');
insert into t2 values (NULL , NULL );
insert into t2 values ('1 - 02', '2 - 02');
select * from t1
where (a1, a2) not in (select * from t2 where b1 is not null and b2 is not null);
select a1, a2, (a1, a2) not in (select * from t2) as in_res from t1;
drop table t1, t2;
--echo -------------------------------------------------------------------------
--echo NULLs in the outer columns, no NULLs in the suqbuery
--echo -------------------------------------------------------------------------
create table t1 (a1 char(8), a2 char(8));
create table t2 (b1 char(8) not null, b2 char(8) not null);
insert into t1 values (NULL , '2 - 00');
insert into t1 values ('1 - 01', '2 - 01');
insert into t1 values (NULL , NULL );
insert into t2 values ('1 - 00', '2 - 00');
insert into t2 values ('1 - 01', '2 - 01');
insert into t2 values ('1 - 02', '2 - 00');
select * from t1
where (a1, a2) not in (select * from t2 where b1 is not null and b2 is not null);
select a1, a2, (a1, a2) not in (select * from t2) as in_res from t1;
select * from t1
where (a1, a2) in (select * from t2 where b1 is not null and b2 is not null);
select a1, a2, (a1, a2) in (select * from t2) as in_res from t1;
drop table t1, t2;
--echo -------------------------------------------------------------------------
--echo NULLs in the outer column, NULLs in the subquery, there is
--echo no value match in any column, but there is a partial match
--echo such that some of the matching NULLs are in the outer columns,
--echo the other NULLs are in the inner columns.
--echo -------------------------------------------------------------------------
create table t1 (a1 char(1), a2 char(1), a3 char(1));
create table t2 (b1 char(1), b2 char(1), b3 char(1));
insert into t1 values ('c', NULL, 'a');
insert into t2 values (NULL, 'x', NULL);
insert into t2 values (NULL, 'y', NULL);
insert into t2 values ('o', 'z', 'p');
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
set @@optimizer_switch=@in_exists;
EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
set @@optimizer_switch = @test_default_opt_switch;
drop table t1, t2;
create table t1 (a1 char(1), a2 char(1) not null, a3 char(1));
create table t2 (b1 char(1), b2 char(1), b3 char(1));
insert into t1 values (NULL, 'y', NULL);
insert into t2 values ('v', 'x', NULL);
insert into t2 values (NULL, 'y', 'w');
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
set @@optimizer_switch=@in_exists;
EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
set @@optimizer_switch = @test_default_opt_switch;
drop table t1, t2;
--echo -------------------------------------------------------------------------
--echo There is only one column in the subquery to complement the NULLs in the
--echo outer reference. It is a NULL column, so a match is guaranteed.
--echo -------------------------------------------------------------------------
create table t1 (a1 char(1), a2 char(1), a3 char(1));
create table t2 (b1 char(1), b2 char(1), b3 char(1));
insert into t1 values (NULL, 'g', NULL);
insert into t2 values ('z', NULL, 'y');
insert into t2 values (NULL, 'z', 'y');
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
set @@optimizer_switch=@in_exists;
EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
set @@optimizer_switch = @test_default_opt_switch;
drop table t1, t2;
--echo -------------------------------------------------------------------------
--echo The intersection of the NULL bitmaps is empty because the ranges
--echo of NULL bits do not overlap.
--echo -------------------------------------------------------------------------
create table t1 (a1 char(1), a2 char(1), a3 char(1));
create table t2 (b1 char(1), b2 char(1), b3 char(1));
insert into t1 values ('b', 'g', NULL);
insert into t2 values ('z', NULL, 'y');
insert into t2 values (NULL, 'z', 'y');
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
set @@optimizer_switch=@in_exists;
EXPLAIN
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3) NOT IN (select * from t2);
drop table t1, t2;
--echo -------------------------------------------------------------------------
--echo The intersection of the NULL bitmaps is non-empty, and there is a
--echo non-NULL column.
--echo -------------------------------------------------------------------------
create table t1 (a1 char(1), a2 char(1), a3 char(1) not null, a4 char(10));
create table t2 (b1 char(1), b2 char(1), b3 char(1), b4 char(1));
insert into t1 values ('a', 'g', 'x', NULL);
insert into t2 values ('z', NULL, 'y', 'x');
insert into t2 values (NULL, NULL, 'x', 'y');
insert into t2 values ('x', 'w', 'z', NULL);
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
set @@optimizer_switch=@in_exists;
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
drop table t1, t2;
--echo -------------------------------------------------------------------------
--echo Value match in one row, but the NULL complement match in another.
--echo The result must be false.
--echo -------------------------------------------------------------------------
create table t1 (a1 char(2), a2 char(1), a3 char(1) not null, a4 char(10));
create table t2 (b1 char(2), b2 char(1), b3 char(1), b4 char(1));
insert into t1 values ('99', NULL, 'j', 'f');
insert into t2 values ('01', NULL, 'y', NULL);
insert into t2 values ('02', NULL, 'x', 'y');
insert into t2 values ('03', 'q', 'y', 'x');
insert into t2 values (NULL, 'q', 'm', 'p');
insert into t2 values ('m', 'z', 'j', NULL);
insert into t2 values (NULL, 'z', 'b', NULL);
insert into t2 values (NULL, 'z', 'a', NULL);
insert into t2 values ('34', 'q', 'y', 'x');
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
set @@optimizer_switch=@in_exists;
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
drop table t1, t2;
--echo -------------------------------------------------------------------------
--echo Test the intersection of larger number of rows with NULL, such that
--echo the number is at the boundary 32. This test is based on the implementation
--echo of MY_BITMAP which uses 32 bit words, and the intersection operation works
--echo by intersecting the bitmap word by word.
--echo -------------------------------------------------------------------------
create table t1 (a1 char(2), a2 char(2), a3 char(1), a4 char(10)) ENGINE=MyISAM;
create table t2 (b1 char(2), b2 char(2), b3 char(1), b4 char(1)) ENGINE=MyISAM;
insert into t1 values (NULL, '98', NULL, 'b');
insert into t1 values (NULL, '99', NULL, 'c');
insert into t2 values ('00', 'rr', 'y', NULL);
insert into t2 values ('01', 'rr', 'y', NULL);
insert into t2 values ('02', NULL, 'x', 'y');
insert into t2 values ('03', 'qq', 'y', 'x');
insert into t2 values ('04', 'qq', 'm', 'p');
insert into t2 values ('05', 'rr', 'y', NULL);
insert into t2 values ('06', NULL, 'x', 'y');
insert into t2 values ('07', 'qq', 'y', 'x');
insert into t2 values ('08', 'qq', 'm', 'q');
insert into t2 values ('09', 'rr', 'y', NULL);
insert into t2 values ('10', NULL, 'x', 'y');
insert into t2 values ('11', 'qq', 'y', 'x');
insert into t2 values ('12', 'qq', 'm', 'k');
insert into t2 values ('13', 'rr', 'y', NULL);
insert into t2 values ('14', NULL, 'x', 'y');
insert into t2 values ('15', 'qq', 'y', 'x');
insert into t2 values ('16', 'qq', 'm', 's');
insert into t2 values ('17', 'rr', 'y', NULL);
insert into t2 values ('18', NULL, 'x', 'y');
insert into t2 values ('19', 'qq', 'y', 'x');
insert into t2 values ('20', 'qq', 'm', 't');
insert into t2 values ('21', 'rr', 'y', NULL);
insert into t2 values ('22', NULL, 'x', 'y');
insert into t2 values ('23', 'qq', 'y', 'x');
insert into t2 values ('24', 'qq', 'm', 'u');
insert into t2 values ('25', 'rr', 'y', NULL);
insert into t2 values ('26', NULL, 'x', 'y');
insert into t2 values ('27', 'qq', 'y', 'x');
insert into t2 values ('28', 'qq', 'm', 'y');
insert into t2 values ('29', 'rr', 'y', NULL);
insert into t2 values ('30', NULL, 'x', 'z');
insert into t2 values ('31', 'ss', 'h', NULL);
insert into t2 values ('32', 'vv', 'i', NULL);
--echo the only partial matching row
insert into t2 values ('33', NULL, 'j', NULL);
insert into t2 values ('34', 'qq', 'y', 'x');
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
set @@optimizer_switch=@in_exists;
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
--echo change the mathcing row to be the last one in the first bitmap word
update t2 set b2 = 'zz' where b1 = 33;
update t2 set b2 = NULL where b1 = 31;
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
set @@optimizer_switch='partial_match_rowid_merge=off,partial_match_table_scan=on';
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
set @@optimizer_switch=@in_exists;
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
EXPLAIN
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
SELECT * from t1 where (a1, a2, a3, a4) NOT IN (select * from t2);
drop table t1, t2;
--echo -------------------------------------------------------------------------
--echo All columns require partial matching (no non-null columns)
--echo -------------------------------------------------------------------------
--echo TODO
--echo -------------------------------------------------------------------------
--echo Both non-NULL columns and columns with NULLs
--echo -------------------------------------------------------------------------
--echo TODO
--echo -------------------------------------------------------------------------
--echo Covering NULL rows
--echo -------------------------------------------------------------------------
create table t1 (a1 char(8), a2 char(8));
create table t2 (b1 char(8), b2 char(8));
insert into t1 values ('1 - 00', '2 - 00');
insert into t1 values ('1 - 01', '2 - 01');
insert into t2 values ('1 - 01', NULL );
insert into t2 values (NULL , '2 - 02');
insert into t2 values (NULL , NULL );
insert into t2 values ('1 - 02', '2 - 02');
select * from t1
where (a1, a2) not in (select * from t2);
select a1, a2, (a1, a2) not in (select * from t2) as in_res from t1;
insert into t2 values ('1 - 01', '2 - 01');
select * from t1
where (a1, a2) not in (select * from t2);
select a1, a2, (a1, a2) not in (select * from t2) as in_res from t1;
select * from t1
where (a1, a2) in (select * from t2);
select a1, a2, (a1, a2) in (select * from t2) as in_res from t1;
drop table t1, t2;
--echo -------------------------------------------------------------------------
--echo Covering NULL columns
--echo -------------------------------------------------------------------------
--echo this case affects only the rowid-merge algorithm
set @@optimizer_switch="partial_match_rowid_merge=on,partial_match_table_scan=off";
create table t1 (a1 char(8) not null, a2 char(8), a3 char(8) not null);
create table t2 (b1 char(8) not null, b2 char(8), b3 char(8) not null);
insert into t1 values ('1 - 00', '2 - 00', '3 - 00');
insert into t1 values ('1 - 01', '2 - 01', '3 - 01');
insert into t2 values ('1 - 01', NULL, '3 - x1');
insert into t2 values ('1 - 02', NULL, '3 - 02');
insert into t2 values ('1 - 00', NULL, '3 - 00');
select * from t1
where (a1, a2, a3) not in (select * from t2);
select *, (a1, a2, a3) not in (select * from t2) as in_res from t1;
select * from t1
where (a1, a2, a3) in (select * from t2);
select *, (a1, a2, a3) in (select * from t2) as in_res from t1;
drop table t1, t2;
create table t1 (a1 char(8), a2 char(8), a3 char(8) not null);
create table t2 (b1 char(8), b2 char(8), b3 char(8) not null);
insert into t1 values ('1 - 00', '2 - 00', '3 - 00');
insert into t1 values ('1 - 01', '2 - 01', '3 - 01');
insert into t2 values (NULL, NULL, '3 - x1');
insert into t2 values (NULL, NULL, '3 - 02');
insert into t2 values (NULL, NULL, '3 - 00');
select * from t1
where (a1, a2, a3) not in (select * from t2);
select *, (a1, a2, a3) not in (select * from t2) as in_res from t1;
select * from t1
where (a1, a2, a3) in (select * from t2);
select *, (a1, a2, a3) in (select * from t2) as in_res from t1;
drop table t1, t2;
--echo -------------------------------------------------------------------------
--echo Covering NULL row, and a NULL column
--echo -------------------------------------------------------------------------
create table t1 (a1 char(8) not null, a2 char(8), a3 char(8));
create table t2 (b1 char(8), b2 char(8), b3 char(8));
insert into t1 values ('1 - 00', '2 - 00', '3 - 00');
insert into t1 values ('1 - 01', '2 - 01', '3 - 01');
insert into t2 values ('1 - 01', NULL, '3 - x1');
insert into t2 values (NULL , NULL, NULL );
insert into t2 values ('1 - 00', NULL, '3 - 00');
select * from t1
where (a1, a2, a3) not in (select * from t2);
select *, (a1, a2, a3) not in (select * from t2) as in_res from t1;
select * from t1
where (a1, a2, a3) in (select * from t2);
select *, (a1, a2, a3) in (select * from t2) as in_res from t1;
drop table t1, t2;
--echo -------------------------------------------------------------------------
--echo Covering NULL row, and covering NULL columns
--echo -------------------------------------------------------------------------
create table t1 (a1 char(8) not null, a2 char(8), a3 char(8));
create table t2 (b1 char(8), b2 char(8), b3 char(8));
insert into t1 values ('1 - 00', '2 - 00', '3 - 00');
insert into t1 values ('1 - 01', '2 - 01', '3 - 01');
insert into t2 values (NULL, NULL, NULL);
insert into t2 values (NULL, NULL, NULL);
select * from t1
where (a1, a2, a3) not in (select * from t2);
select *, (a1, a2, a3) not in (select * from t2) as in_res from t1;
select * from t1
where (a1, a2, a3) in (select * from t2);
select *, (a1, a2, a3) in (select * from t2) as in_res from t1;
drop table t1, t2;
--echo -------------------------------------------------------------------------
--echo Small buffer for the rowid_merge partial match algorithm that forces
--echo reverting to table scan partial match.
--echo -------------------------------------------------------------------------
set @save_rowid_merge_buff_size = @@rowid_merge_buff_size;
set @@rowid_merge_buff_size = 0;
create table t1 (a1 char(2), a2 char(2), a3 char(1), a4 char(10));
create table t2 (b1 char(2), b2 char(2), b3 char(1), b4 char(1));
insert into t1 values (NULL, '98', NULL, 'b');
insert into t1 values (NULL, '99', NULL, 'c');
insert into t2 values ('00', 'rr', 'y', NULL);
insert into t2 values ('01', 'rr', 'y', NULL);
insert into t2 values ('02', NULL, 'x', 'y');
insert into t2 values ('03', 'qq', 'y', 'x');
set @@optimizer_switch='partial_match_rowid_merge=on,partial_match_table_scan=off';
EXPLAIN
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
SELECT t1.*, (a1, a2, a3, a4) IN (select * from t2) as in_res from t1;
drop table t1, t2;
set @@rowid_merge_buff_size = @save_rowid_merge_buff_size;
--echo -------------------------------
--echo Part 2: Test cases for bugs.
--echo -------------------------------
--disable_warnings
drop table if exists t1, t2;
--enable_warnings
--echo #
--echo # LP BUG#608744
--echo #
set @@optimizer_switch="materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=off";
create table t1 (a1 char(1), a2 char(1));
insert into t1 values (NULL, 'b');
create table t2 (b1 char(1), b2 char(2));
insert into t2 values ('a','b'), ('c', 'd');
select * from t1 where (a1, a2) NOT IN (select b1, b2 from t2);
drop table t1,t2;
--echo #
--echo # LP BUG#601156
--echo #
CREATE TABLE t1 (a1 int DEFAULT NULL, a2 int DEFAULT NULL);
INSERT INTO t1 VALUES (NULL,2);
INSERT INTO t1 VALUES (4,NULL);
CREATE TABLE t2 (b1 int DEFAULT NULL, b2 int DEFAULT NULL);
INSERT INTO t2 VALUES (6,NULL);
INSERT INTO t2 VALUES (NULL,0);
set @@optimizer_switch='materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on';
EXPLAIN EXTENDED
SELECT * FROM (SELECT * FROM t1 WHERE a1 NOT IN (SELECT b2 FROM t2)) table1;
DROP TABLE t1, t2;
--echo #
--echo # LP BUG#613009 Crash in Ordered_key::get_field_idx
--echo #
set @@optimizer_switch='materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=off';
create table t1 (a1 char(3) DEFAULT NULL, a2 char(3) DEFAULT NULL);
insert into t1 values (NULL, 'a21'), (NULL, 'a22');
explain select * from t1 where (a1, a2) not in (select a1, a2 from t1);
select * from t1 where (a1, a2) not in (select a1, a2 from t1);
drop table t1;
--echo #
--echo # LP BUG#680058 void Ordered_key::add_key(rownum_t):
--echo # Assertion `key_buff_elements && cur_key_idx < key_buff_elements' failed
--echo #
create table t1 (f1 char(1), f2 char(1));
insert into t1 values ('t', '0'), ('0', 't');
create table t2 (f3 char(1), f4 char(1));
insert into t2 values ('t', NULL), ('t', NULL), ('d', 'y');
set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,semijoin=off';
select * from t1 where (f1, f2) not in (select * from t2);
drop table t1, t2;
--echo #
--echo # LP BUG#809245 Second assertion `bit < (map)->n_bits' with partial_match_merge
--echo #
CREATE TABLE t1 (d varchar(32)) ;
INSERT INTO t1 VALUES ('r');
CREATE TABLE t2 ( a int, c varchar(32)) ;
INSERT INTO t2 VALUES (5,'r');
CREATE TABLE t3 ( a int NOT NULL , d varchar(32)) ;
INSERT INTO t3 VALUES (10,'g');
set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,in_to_exists=off';
EXPLAIN SELECT *
FROM t1
WHERE (t1.d , t1.d) NOT IN (
SELECT t3.d , t2.c
FROM t3 LEFT JOIN t2 ON t3.a = t2.a);
SELECT *
FROM t1
WHERE (t1.d , t1.d) NOT IN (
SELECT t3.d , t2.c
FROM t3 LEFT JOIN t2 ON t3.a = t2.a);
set @@optimizer_switch='materialization=off,in_to_exists=on';
EXPLAIN SELECT *
FROM t1
WHERE (t1.d , t1.d) NOT IN (
SELECT t3.d , t2.c
FROM t3 LEFT JOIN t2 ON t3.a = t2.a);
SELECT *
FROM t1
WHERE (t1.d , t1.d) NOT IN (
SELECT t3.d , t2.c
FROM t3 LEFT JOIN t2 ON t3.a = t2.a);
drop table t1, t2, t3;
--echo #
--echo # LP BUG#809266 Diverging results with partial_match_rowid_merge=on
--echo #
CREATE TABLE t1 (c int) ;
INSERT INTO t1 VALUES (0),(0);
CREATE TABLE t2 (a int, b int) ;
INSERT INTO t2 VALUES (6,3), (9,NULL);
set @@optimizer_switch='materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off,in_to_exists=off';
EXPLAIN
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT b, a FROM t2);
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT b, a FROM t2);
EXPLAIN
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT a, b FROM t2);
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT a, b FROM t2);
set @@optimizer_switch='materialization=off,in_to_exists=on';
EXPLAIN
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT b, a FROM t2);
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT b, a FROM t2);
EXPLAIN
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT a, b FROM t2);
SELECT * FROM t1 WHERE (6, 4 ) NOT IN (SELECT a, b FROM t2);
drop table t1, t2;
--echo #
--echo # LP BUG#856152 Wrong result with NOT IN subquery and partial_match_rowid_merge
--echo #
CREATE TABLE t1 ( f1 integer NOT NULL , f2 integer) ;
INSERT INTO t1 VALUES (3,3),(48,NULL),(49,1);
CREATE TABLE t2 ( f3 int) ;
INSERT INTO t2 VALUES (5);
set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off';
EXPLAIN SELECT * FROM t2 WHERE ( 3 , 1 ) NOT IN ( SELECT f1 , f2 FROM t1 );
SELECT * FROM t2 WHERE ( 3 , 1 ) NOT IN ( SELECT f1 , f2 FROM t1 );
set @@optimizer_switch='in_to_exists=on,materialization=off';
EXPLAIN SELECT * FROM t2 WHERE ( 3 , 1 ) NOT IN ( SELECT f1 , f2 FROM t1 );
SELECT * FROM t2 WHERE ( 3 , 1 ) NOT IN ( SELECT f1 , f2 FROM t1 );
drop table t1, t2;
--echo #
--echo # LP BUG#869036 Wrong result with in_to_exists=ON and NOT IN
--echo #
create table outer_sq (f1 char(1), f2 char(1));
insert into outer_sq values (NULL, 'c'), ('g', 'c');
create table inner_sq (f3 char(1), f4 char(1));
insert into inner_sq values(null, 'i'), ('v', null);
--echo All three strategies below must produce the same result.
set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_merge=on,partial_match_table_scan=off';
SELECT outer_sq.*, (f1, f2) IN (select * from inner_sq) from outer_sq;
SELECT * from outer_sq where (f1, f2) NOT IN (select * from inner_sq);
set @@optimizer_switch='in_to_exists=off,materialization=on,partial_match_rowid_merge=off,partial_match_table_scan=on';
SELECT outer_sq.*, (f1, f2) IN (select * from inner_sq) from outer_sq;
SELECT * from outer_sq where (f1, f2) NOT IN (select * from inner_sq);
set @@optimizer_switch='in_to_exists=on,materialization=off';
SELECT outer_sq.*, (f1, f2) IN (select * from inner_sq) from outer_sq;
SELECT * from outer_sq where (f1, f2) NOT IN (select * from inner_sq);
drop table outer_sq, inner_sq;
set @@optimizer_switch=@save_optimizer_switch;
Reference in a new issue View git blame Copy permalink