EVOLUTION-MANAGER

Edit File: join_nested_jcl6.test

# 
# Run join_nested.test with BKA enabled 
#

set @save_optimizer_switch_jcl6=@@optimizer_switch;
set @@optimizer_switch='optimize_join_buffer_size=on';
set @@optimizer_switch='semijoin_with_cache=on';
set @@optimizer_switch='outer_join_with_cache=on';
set @@optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';

set join_cache_level=6;
show variables like 'join_cache_level';

set @optimizer_switch_for_join_nested_test=@@optimizer_switch;
set @join_cache_level_for_join_nested_test=@@join_cache_level;

--source join_nested.test

#
# BUG#35835: queries with nested outer joins with BKA enabled
#

CREATE TABLE t5 (a int, b int, c int, PRIMARY KEY(a), KEY b_i (b));
CREATE TABLE t6 (a int, b int, c int, PRIMARY KEY(a), KEY b_i (b));
CREATE TABLE t7 (a int, b int, c int, PRIMARY KEY(a), KEY b_i (b));
CREATE TABLE t8 (a int, b int, c int, PRIMARY KEY(a), KEY b_i (b));

INSERT INTO t5 VALUES (1,1,0), (2,2,0), (3,3,0);
INSERT INTO t6 VALUES (1,2,0), (3,2,0), (6,1,0);
INSERT INTO t7 VALUES (1,1,0), (2,2,0);
INSERT INTO t8 VALUES (0,2,0), (1,2,0);
INSERT INTO t6 VALUES (-1,12,0), (-3,13,0), (-6,11,0), (-4,14,0);
INSERT INTO t7 VALUES (-1,11,0), (-2,12,0), (-3,13,0), (-4,14,0), (-5,15,0);
INSERT INTO t8 VALUES (-3,13,0), (-1,12,0), (-2,14,0), (-5,15,0), (-4,16,0);

EXPLAIN
SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
  FROM t5 
       LEFT JOIN 
       ( 
         (t6, t7)
         LEFT JOIN 
         t8
         ON t7.b=t8.b AND t6.b < 10 
       )
       ON t6.b >= 2 AND t5.b=t7.b AND
          (t8.a > 0 OR t8.c IS NULL) AND t6.a>0 AND t7.a>0;

SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
  FROM t5 
       LEFT JOIN 
       ( 
         (t6, t7)
         LEFT JOIN 
         t8
         ON t7.b=t8.b AND t6.b < 10
       )
       ON t6.b >= 2 AND t5.b=t7.b AND
          (t8.a > 0 OR t8.c IS NULL) AND t6.a>0 AND t7.a>0;

DELETE FROM t5;
DELETE FROM t6;
DELETE FROM t7;
DELETE FROM t8;

INSERT INTO t5 VALUES (1,3,0), (3,2,0);
INSERT INTO t6 VALUES (3,3,0);
INSERT INTO t7 VALUES (1,2,0);
INSERT INTO t8 VALUES (1,1,0);

EXPLAIN
SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
  FROM t5 LEFT JOIN                
       (t6 LEFT JOIN t7 ON t7.a=1, t8)
       ON (t5.b=t8.b);

SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
  FROM t5 LEFT JOIN                
       (t6 LEFT JOIN t7 ON t7.a=1, t8)
       ON (t5.b=t8.b);

EXPLAIN
SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
  FROM t5 LEFT JOIN                
       (t6 LEFT JOIN t7 ON t7.b=2, t8)
       ON (t5.b=t8.b);

SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
  FROM t5 LEFT JOIN                
       (t6 LEFT JOIN t7 ON t7.b=2, t8)
       ON (t5.b=t8.b);

EXPLAIN
SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
  FROM t5 LEFT JOIN                
       (t8, t6 LEFT JOIN t7 ON t7.a=1)
       ON (t5.b=t8.b);

SELECT t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
  FROM t5 LEFT JOIN                
       (t8, t6 LEFT JOIN t7 ON t7.a=1)
       ON (t5.b=t8.b);

DROP TABLE t5,t6,t7,t8;

set join_cache_level=default;
show variables like 'join_cache_level';

set @@optimizer_switch=@save_optimizer_switch_jcl6;
set @optimizer_switch_for_join_nested_test=NULL;
set @join_cache_level_for_join_nested_test=NULL;