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Commit 0aebdc11 authored by Igor Babaev's avatar Igor Babaev
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Ported the fix for LP bug #702310 / bug #59493. 

An assertion failure was triggered for a 6-way join query that used two
join buffers.
The failure happened because every call of JOIN_CACHE::join_matching_records
saved and restored status of all tables that were accessed before the table
join_tab. It must do it only for those of them that follow the last table 
using a join buffer.
parent cb4fa7f4
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Showing with 276 additions and 3 deletions
mysql-test/r/select.result
View file @ 0aebdc11
......@@ -4796,4 +4796,83 @@ SELECT 1 FROM t1 ORDER BY a COLLATE latin1_german2_ci;
1
1
DROP TABLE t1;
#
# Bug #702310: usage of 2 join buffers after ref access to an empty table
#
CREATE TABLE t1 (f1 int) ;
INSERT INTO t1 VALUES (9);
CREATE TABLE t2 (f1 int);
INSERT INTO t2 VALUES (3),(7),(18);
INSERT INTO t2 VALUES (3),(7),(18);
INSERT INTO t2 VALUES (3),(7),(18);
INSERT INTO t2 VALUES (3),(7),(18);
CREATE TABLE t3 (f1 int);
INSERT INTO t3 VALUES (17);
CREATE TABLE t4 (f1 int PRIMARY KEY, f2 varchar(1024)) ;
CREATE TABLE t5 (f1 int) ;
INSERT INTO t5 VALUES (20),(5);
CREATE TABLE t6(f1 int);
INSERT INTO t6 VALUES (9),(7);
SET SESSION join_buffer_size = 2048;
EXPLAIN
SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1
1 SIMPLE t2 ALL NULL NULL NULL NULL 12
1 SIMPLE t3 ALL NULL NULL NULL NULL 1 Using where
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 4 const 1
1 SIMPLE t5 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)
SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6;
f1 f1 f1 f1 f2 f1 f1
3 9 NULL NULL NULL 20 9
7 9 NULL NULL NULL 20 9
3 9 NULL NULL NULL 20 7
7 9 NULL NULL NULL 20 7
3 9 NULL NULL NULL 5 9
7 9 NULL NULL NULL 5 9
3 9 NULL NULL NULL 5 7
7 9 NULL NULL NULL 5 7
18 9 NULL NULL NULL 20 9
3 9 NULL NULL NULL 20 9
18 9 NULL NULL NULL 20 7
3 9 NULL NULL NULL 20 7
18 9 NULL NULL NULL 5 9
3 9 NULL NULL NULL 5 9
18 9 NULL NULL NULL 5 7
3 9 NULL NULL NULL 5 7
7 9 NULL NULL NULL 20 9
18 9 NULL NULL NULL 20 9
7 9 NULL NULL NULL 20 7
18 9 NULL NULL NULL 20 7
7 9 NULL NULL NULL 5 9
18 9 NULL NULL NULL 5 9
7 9 NULL NULL NULL 5 7
18 9 NULL NULL NULL 5 7
3 9 NULL NULL NULL 20 9
7 9 NULL NULL NULL 20 9
3 9 NULL NULL NULL 20 7
7 9 NULL NULL NULL 20 7
3 9 NULL NULL NULL 5 9
7 9 NULL NULL NULL 5 9
3 9 NULL NULL NULL 5 7
7 9 NULL NULL NULL 5 7
18 9 NULL NULL NULL 20 9
3 9 NULL NULL NULL 20 9
18 9 NULL NULL NULL 20 7
3 9 NULL NULL NULL 20 7
18 9 NULL NULL NULL 5 9
3 9 NULL NULL NULL 5 9
18 9 NULL NULL NULL 5 7
3 9 NULL NULL NULL 5 7
7 9 NULL NULL NULL 20 9
18 9 NULL NULL NULL 20 9
7 9 NULL NULL NULL 20 7
18 9 NULL NULL NULL 20 7
7 9 NULL NULL NULL 5 9
18 9 NULL NULL NULL 5 9
7 9 NULL NULL NULL 5 7
18 9 NULL NULL NULL 5 7
SET SESSION join_buffer_size = DEFAULT;
DROP TABLE t1,t2,t3,t4,t5,t6;
End of 5.1 tests
mysql-test/r/select_jcl6.result
View file @ 0aebdc11
......@@ -4803,6 +4803,85 @@ SELECT 1 FROM t1 ORDER BY a COLLATE latin1_german2_ci;
1
1
DROP TABLE t1;
#
# Bug #702310: usage of 2 join buffers after ref access to an empty table
#
CREATE TABLE t1 (f1 int) ;
INSERT INTO t1 VALUES (9);
CREATE TABLE t2 (f1 int);
INSERT INTO t2 VALUES (3),(7),(18);
INSERT INTO t2 VALUES (3),(7),(18);
INSERT INTO t2 VALUES (3),(7),(18);
INSERT INTO t2 VALUES (3),(7),(18);
CREATE TABLE t3 (f1 int);
INSERT INTO t3 VALUES (17);
CREATE TABLE t4 (f1 int PRIMARY KEY, f2 varchar(1024)) ;
CREATE TABLE t5 (f1 int) ;
INSERT INTO t5 VALUES (20),(5);
CREATE TABLE t6(f1 int);
INSERT INTO t6 VALUES (9),(7);
SET SESSION join_buffer_size = 2048;
EXPLAIN
SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1
1 SIMPLE t2 ALL NULL NULL NULL NULL 12
1 SIMPLE t3 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 4 const 1 Using join buffer (incremental, BKA join)
1 SIMPLE t5 ALL NULL NULL NULL NULL 2 Using join buffer (incremental, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 2 Using join buffer (incremental, BNL join)
SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6;
f1 f1 f1 f1 f2 f1 f1
3 9 NULL NULL NULL 20 9
7 9 NULL NULL NULL 20 9
18 9 NULL NULL NULL 20 9
3 9 NULL NULL NULL 5 9
7 9 NULL NULL NULL 5 9
18 9 NULL NULL NULL 5 9
3 9 NULL NULL NULL 20 7
7 9 NULL NULL NULL 20 7
18 9 NULL NULL NULL 20 7
3 9 NULL NULL NULL 5 7
7 9 NULL NULL NULL 5 7
18 9 NULL NULL NULL 5 7
3 9 NULL NULL NULL 20 9
7 9 NULL NULL NULL 20 9
18 9 NULL NULL NULL 20 9
3 9 NULL NULL NULL 5 9
7 9 NULL NULL NULL 5 9
18 9 NULL NULL NULL 5 9
3 9 NULL NULL NULL 20 7
7 9 NULL NULL NULL 20 7
18 9 NULL NULL NULL 20 7
3 9 NULL NULL NULL 5 7
7 9 NULL NULL NULL 5 7
18 9 NULL NULL NULL 5 7
3 9 NULL NULL NULL 20 9
7 9 NULL NULL NULL 20 9
18 9 NULL NULL NULL 20 9
3 9 NULL NULL NULL 5 9
7 9 NULL NULL NULL 5 9
18 9 NULL NULL NULL 5 9
3 9 NULL NULL NULL 20 7
7 9 NULL NULL NULL 20 7
18 9 NULL NULL NULL 20 7
3 9 NULL NULL NULL 5 7
7 9 NULL NULL NULL 5 7
18 9 NULL NULL NULL 5 7
3 9 NULL NULL NULL 20 9
7 9 NULL NULL NULL 20 9
18 9 NULL NULL NULL 20 9
3 9 NULL NULL NULL 5 9
7 9 NULL NULL NULL 5 9
18 9 NULL NULL NULL 5 9
3 9 NULL NULL NULL 20 7
7 9 NULL NULL NULL 20 7
18 9 NULL NULL NULL 20 7
3 9 NULL NULL NULL 5 7
7 9 NULL NULL NULL 5 7
18 9 NULL NULL NULL 5 7
SET SESSION join_buffer_size = DEFAULT;
DROP TABLE t1,t2,t3,t4,t5,t6;
End of 5.1 tests
set join_cache_level=default;
show variables like 'join_cache_level';
......
mysql-test/r/select_pkeycache.result
View file @ 0aebdc11
......@@ -4796,4 +4796,83 @@ SELECT 1 FROM t1 ORDER BY a COLLATE latin1_german2_ci;
1
1
DROP TABLE t1;
#
# Bug #702310: usage of 2 join buffers after ref access to an empty table
#
CREATE TABLE t1 (f1 int) ;
INSERT INTO t1 VALUES (9);
CREATE TABLE t2 (f1 int);
INSERT INTO t2 VALUES (3),(7),(18);
INSERT INTO t2 VALUES (3),(7),(18);
INSERT INTO t2 VALUES (3),(7),(18);
INSERT INTO t2 VALUES (3),(7),(18);
CREATE TABLE t3 (f1 int);
INSERT INTO t3 VALUES (17);
CREATE TABLE t4 (f1 int PRIMARY KEY, f2 varchar(1024)) ;
CREATE TABLE t5 (f1 int) ;
INSERT INTO t5 VALUES (20),(5);
CREATE TABLE t6(f1 int);
INSERT INTO t6 VALUES (9),(7);
SET SESSION join_buffer_size = 2048;
EXPLAIN
SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1
1 SIMPLE t2 ALL NULL NULL NULL NULL 12
1 SIMPLE t3 ALL NULL NULL NULL NULL 1 Using where
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 4 const 1
1 SIMPLE t5 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)
SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6;
f1 f1 f1 f1 f2 f1 f1
3 9 NULL NULL NULL 20 9
7 9 NULL NULL NULL 20 9
3 9 NULL NULL NULL 20 7
7 9 NULL NULL NULL 20 7
3 9 NULL NULL NULL 5 9
7 9 NULL NULL NULL 5 9
3 9 NULL NULL NULL 5 7
7 9 NULL NULL NULL 5 7
18 9 NULL NULL NULL 20 9
3 9 NULL NULL NULL 20 9
18 9 NULL NULL NULL 20 7
3 9 NULL NULL NULL 20 7
18 9 NULL NULL NULL 5 9
3 9 NULL NULL NULL 5 9
18 9 NULL NULL NULL 5 7
3 9 NULL NULL NULL 5 7
7 9 NULL NULL NULL 20 9
18 9 NULL NULL NULL 20 9
7 9 NULL NULL NULL 20 7
18 9 NULL NULL NULL 20 7
7 9 NULL NULL NULL 5 9
18 9 NULL NULL NULL 5 9
7 9 NULL NULL NULL 5 7
18 9 NULL NULL NULL 5 7
3 9 NULL NULL NULL 20 9
7 9 NULL NULL NULL 20 9
3 9 NULL NULL NULL 20 7
7 9 NULL NULL NULL 20 7
3 9 NULL NULL NULL 5 9
7 9 NULL NULL NULL 5 9
3 9 NULL NULL NULL 5 7
7 9 NULL NULL NULL 5 7
18 9 NULL NULL NULL 20 9
3 9 NULL NULL NULL 20 9
18 9 NULL NULL NULL 20 7
3 9 NULL NULL NULL 20 7
18 9 NULL NULL NULL 5 9
3 9 NULL NULL NULL 5 9
18 9 NULL NULL NULL 5 7
3 9 NULL NULL NULL 5 7
7 9 NULL NULL NULL 20 9
18 9 NULL NULL NULL 20 9
7 9 NULL NULL NULL 20 7
18 9 NULL NULL NULL 20 7
7 9 NULL NULL NULL 5 9
18 9 NULL NULL NULL 5 9
7 9 NULL NULL NULL 5 7
18 9 NULL NULL NULL 5 7
SET SESSION join_buffer_size = DEFAULT;
DROP TABLE t1,t2,t3,t4,t5,t6;
End of 5.1 tests
mysql-test/t/select.test
View file @ 0aebdc11
......@@ -4087,5 +4087,38 @@ EXPLAIN SELECT 1 FROM t1 ORDER BY a COLLATE latin1_german2_ci;
SELECT 1 FROM t1 ORDER BY a COLLATE latin1_german2_ci;
DROP TABLE t1;
--echo #
--echo # Bug #702310: usage of 2 join buffers after ref access to an empty table
--echo #
CREATE TABLE t1 (f1 int) ;
INSERT INTO t1 VALUES (9);
CREATE TABLE t2 (f1 int);
INSERT INTO t2 VALUES (3),(7),(18);
INSERT INTO t2 VALUES (3),(7),(18);
INSERT INTO t2 VALUES (3),(7),(18);
INSERT INTO t2 VALUES (3),(7),(18);
CREATE TABLE t3 (f1 int);
INSERT INTO t3 VALUES (17);
CREATE TABLE t4 (f1 int PRIMARY KEY, f2 varchar(1024)) ;
CREATE TABLE t5 (f1 int) ;
INSERT INTO t5 VALUES (20),(5);
CREATE TABLE t6(f1 int);
INSERT INTO t6 VALUES (9),(7);
SET SESSION join_buffer_size = 2048;
EXPLAIN
SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6;
SELECT STRAIGHT_JOIN * FROM t2, (t1 LEFT JOIN (t3,t4) ON t1.f1 = t4.f1), t5, t6;
SET SESSION join_buffer_size = DEFAULT;
DROP TABLE t1,t2,t3,t4,t5,t6;
--echo End of 5.1 tests
sql/sql_join_cache.cc
View file @ 0aebdc11
......@@ -3171,7 +3171,8 @@ uint JOIN_CACHE_HASHED::get_next_key(uchar ** key)
int JOIN_TAB_SCAN::open()
{
for (JOIN_TAB *tab= join->join_tab; tab != join_tab ; tab++)
JOIN_TAB *bound= join_tab-cache->tables;
for (JOIN_TAB *tab= join_tab-1; tab != bound && !tab->cache; tab--)
{
tab->status= tab->table->status;
tab->table->status= 0;
......@@ -3246,7 +3247,8 @@ int JOIN_TAB_SCAN::next()
void JOIN_TAB_SCAN::close()
{
for (JOIN_TAB *tab= join->join_tab; tab != join_tab ; tab++)
JOIN_TAB *bound= join_tab-cache->tables;
for (JOIN_TAB *tab= join_tab-1; tab != bound && !tab->cache; tab--)
tab->table->status= tab->status;
}
......@@ -3647,7 +3649,8 @@ int JOIN_TAB_SCAN_MRR::open()
/* Dynamic range access is never used with BKA */
DBUG_ASSERT(join_tab->use_quick != 2);
for (JOIN_TAB *tab =join->join_tab; tab != join_tab ; tab++)
JOIN_TAB *bound= join_tab-cache->tables;
for (JOIN_TAB *tab= join_tab-1; tab != bound && !tab->cache; tab--)
{
tab->status= tab->table->status;
tab->table->status= 0;
......
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