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BUG#860535: Assertion `keypart_map' failed in mi_rkey with semijoin

Browse source 
- are_tables_local() failed to recognize the fact that OUTER_REF_TABLE_BIT is ok 
  for SJ-Materialization. This caused zero-length ref access to be constructed, which
  led to an assert.
This commit is contained in:
Sergey Petrunya 2011-09-29 17:03:12 +04:00
parent b53744b79e
commit 134e417895
4 changed files with 87 additions and 1 deletions
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28
mysql-test/r/subselect_mat.result
View file

@ -1675,6 +1675,34 @@ GROUP BY t4.f6);
f4
DROP TABLE t1,t3,t4;
set optimizer_switch=@tmp_860300;
#
# BUG#860535: Assertion `keypart_map' failed in mi_rkey with semijoin
#
set @tmp_860535=@@optimizer_switch;
set optimizer_switch='semijoin=on,materialization=on,loosescan=off,firstmatch=off';
CREATE TABLE t1 (f3 int) ;
INSERT INTO t1 VALUES (1),(7);
CREATE TABLE t2 (f3 int , f5 varchar(1), KEY (f3)) ;
INSERT INTO t2 VALUES (7,'b');
CREATE TABLE t3 (f3 int , f4 varchar(1) , KEY(f3), KEY (f4,f3)) ;
INSERT INTO t3 VALUES (1,'t'),(7,'g');
CREATE TABLE t4
SELECT f3
FROM t1 WHERE ( f3 ) NOT IN (
SELECT f3
FROM t2
WHERE f5 IN (
SELECT f4
FROM t3
WHERE t3.f3 < 3
)
);
SELECT * FROM t4;
f3
1
7
DROP TABLE t1, t2, t3, t4;
set optimizer_switch=@tmp_860535;
set @subselect_mat_test_optimizer_switch_value=null;
set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off';
set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';

28
mysql-test/r/subselect_sj_mat.result
View file

@ -1715,3 +1715,31 @@ GROUP BY t4.f6);
f4
DROP TABLE t1,t3,t4;
set optimizer_switch=@tmp_860300;
#
# BUG#860535: Assertion `keypart_map' failed in mi_rkey with semijoin
#
set @tmp_860535=@@optimizer_switch;
set optimizer_switch='semijoin=on,materialization=on,loosescan=off,firstmatch=off';
CREATE TABLE t1 (f3 int) ;
INSERT INTO t1 VALUES (1),(7);
CREATE TABLE t2 (f3 int , f5 varchar(1), KEY (f3)) ;
INSERT INTO t2 VALUES (7,'b');
CREATE TABLE t3 (f3 int , f4 varchar(1) , KEY(f3), KEY (f4,f3)) ;
INSERT INTO t3 VALUES (1,'t'),(7,'g');
CREATE TABLE t4
SELECT f3
FROM t1 WHERE ( f3 ) NOT IN (
SELECT f3
FROM t2
WHERE f5 IN (
SELECT f4
FROM t3
WHERE t3.f3 < 3
)
);
SELECT * FROM t4;
f3
1
7
DROP TABLE t1, t2, t3, t4;
set optimizer_switch=@tmp_860535;

29
mysql-test/t/subselect_sj_mat.test
View file

@ -1370,3 +1370,32 @@ WHERE 'h' IN (SELECT f6
DROP TABLE t1,t3,t4;
set optimizer_switch=@tmp_860300;
--echo #
--echo # BUG#860535: Assertion `keypart_map' failed in mi_rkey with semijoin
--echo #
set @tmp_860535=@@optimizer_switch;
set optimizer_switch='semijoin=on,materialization=on,loosescan=off,firstmatch=off';
CREATE TABLE t1 (f3 int) ;
INSERT INTO t1 VALUES (1),(7);
CREATE TABLE t2 (f3 int , f5 varchar(1), KEY (f3)) ;
INSERT INTO t2 VALUES (7,'b');
CREATE TABLE t3 (f3 int , f4 varchar(1) , KEY(f3), KEY (f4,f3)) ;
INSERT INTO t3 VALUES (1,'t'),(7,'g');
CREATE TABLE t4
SELECT f3
FROM t1 WHERE ( f3 ) NOT IN (
SELECT f3
FROM t2
WHERE f5 IN (
SELECT f4
FROM t3
WHERE t3.f3 < 3
)
);
SELECT * FROM t4;
DROP TABLE t1, t2, t3, t4;
set optimizer_switch=@tmp_860535;

3
sql/sql_select.cc
View file

@ -7239,7 +7239,8 @@ static bool are_tables_local(JOIN_TAB *jtab, table_map used_tables)
except the const tables.
*/
table_map local_tables= jtab->emb_sj_nest->nested_join->used_tables |
jtab->join->const_table_map;
jtab->join->const_table_map |
OUTER_REF_TABLE_BIT;
return !test(used_tables & ~local_tables);
}