Create 'main' test directory and move 't' and 'r' there

1 files changed, 0 insertions, 1717 deletions

diff --git a/mysql-test/r/index_merge_myisam.result b/mysql-test/r/index_merge_myisam.result
deleted file mode 100644
index 992e1d831b5..00000000000
--- a/mysql-test/r/index_merge_myisam.result
+++ /dev/null
@@ -1,1717 +0,0 @@
-set @optimizer_switch_save= @@optimizer_switch;
-set optimizer_switch='index_merge_sort_intersection=off';
-#---------------- Index merge test 1 -------------------------------------------
-SET SESSION STORAGE_ENGINE = MyISAM;
-drop table if exists t0, t1, t2, t3, t4;
-create table t0
-(
-key1 int not null,
-INDEX i1(key1)
-);
-alter table t0 add key2 int not null, add index i2(key2);
-alter table t0 add key3 int not null, add index i3(key3);
-alter table t0 add key4 int not null, add index i4(key4);
-alter table t0 add key5 int not null, add index i5(key5);
-alter table t0 add key6 int not null, add index i6(key6);
-alter table t0 add key7 int not null, add index i7(key7);
-alter table t0 add key8 int not null, add index i8(key8);
-update t0 set key2=key1,key3=key1,key4=key1,key5=key1,key6=key1,key7=key1,key8=1024-key1;
-analyze table t0;
-Table	Op	Msg_type	Msg_text
-test.t0	analyze	status	OK
-explain select * from t0 where key1 < 3 or key1 > 1020;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	range	i1	i1	4	NULL	78	Using index condition; Using where
-explain
-select * from t0 where key1 < 3 or key2 > 1020;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	45	Using sort_union(i1,i2); Using where
-select * from t0 where key1 < 3 or key2 > 1020;
-key1	key2	key3	key4	key5	key6	key7	key8
-1	1	1	1	1	1	1	1023
-2	2	2	2	2	2	2	1022
-1021	1021	1021	1021	1021	1021	1021	3
-1022	1022	1022	1022	1022	1022	1022	2
-1023	1023	1023	1023	1023	1023	1023	1
-1024	1024	1024	1024	1024	1024	1024	0
-select * from t0 where key1=1022;
-key1	key2	key3	key4	key5	key6	key7	key8
-1022	1022	1022	1022	1022	1022	1022	2
-explain select * from t0 where key1 < 3 or key2 <4;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	7	Using sort_union(i1,i2); Using where
-explain
-select * from t0 where (key1 > 30 and key1<35) or (key2 >32 and key2 < 40);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	11	Using sort_union(i1,i2); Using where
-select * from t0 where (key1 > 30 and key1<35) or (key2 >32 and key2 < 40);
-key1	key2	key3	key4	key5	key6	key7	key8
-31	31	31	31	31	31	31	993
-32	32	32	32	32	32	32	992
-33	33	33	33	33	33	33	991
-34	34	34	34	34	34	34	990
-35	35	35	35	35	35	35	989
-36	36	36	36	36	36	36	988
-37	37	37	37	37	37	37	987
-38	38	38	38	38	38	38	986
-39	39	39	39	39	39	39	985
-explain select * from t0 ignore index (i2) where key1 < 3 or key2 <4;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	ALL	i1	NULL	NULL	NULL	1024	Using where
-explain select * from t0 where (key1 < 3 or key2 <4) and key3 = 50;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	ref	i1,i2,i3	i3	4	const	1	Using where
-explain select * from t0 use index (i1,i2) where (key1 < 3 or key2 <4) and key3 = 50;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	7	Using sort_union(i1,i2); Using where
-explain select * from t0 where (key1 > 1 or key2  > 2);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	ALL	i1,i2	NULL	NULL	NULL	1024	Using where
-explain select * from t0 force index (i1,i2) where (key1 > 1 or key2  > 2);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	1024	Using sort_union(i1,i2); Using where
-explain
-select * from t0 where key1<3 or key2<3 or (key1>5 and key1<8) or
-(key1>10 and key1<12) or (key2>100 and key2<110);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	17	Using sort_union(i1,i2); Using where
-explain select * from t0 where key2 = 45 or key1 <=> null;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	range	i1,i2	i2	4	NULL	1	Using index condition
-explain select * from t0 where key2 = 45 or key1 is not null;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	ALL	i1,i2	NULL	NULL	NULL	1024	Using where
-explain select * from t0 where key2 = 45 or key1 is null;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	ref	i2	i2	4	const	1	
-explain select * from t0 where key2=10 or key3=3 or key4 <=> null;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i2,i3,i4	i2,i3	4,4	NULL	2	Using union(i2,i3); Using where
-explain select * from t0 where key2=10 or key3=3 or key4 is null;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i2,i3	i2,i3	4,4	NULL	2	Using union(i2,i3); Using where
-explain select key1 from t0 where (key1 <=> null) or (key2 < 5) or
-(key3=10) or (key4 <=> null);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2,i3,i4	i2,i3	4,4	NULL	6	Using sort_union(i2,i3); Using where
-explain select key1 from t0 where (key1 <=> null) or (key1 < 5) or
-(key3=10) or (key4 <=> null);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i3,i4	i1,i3	4,4	NULL	6	Using sort_union(i1,i3); Using where
-explain select * from t0 where
-(key1 < 3 or key2 < 3) and (key3 < 4 or key4 < 4) and (key5 < 5 or key6 < 5);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2,i3,i4,i5,i6	i1,i2	4,4	NULL	6	Using sort_union(i1,i2); Using where
-explain
-select * from t0 where (key1 < 3 or key2 < 6) and (key1 < 7 or key3 < 4);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2,i3	i1,i2	4,4	NULL	9	Using sort_union(i1,i2); Using where
-select * from t0 where (key1 < 3 or key2 < 6) and (key1 < 7 or key3 < 4);
-key1	key2	key3	key4	key5	key6	key7	key8
-1	1	1	1	1	1	1	1023
-2	2	2	2	2	2	2	1022
-3	3	3	3	3	3	3	1021
-4	4	4	4	4	4	4	1020
-5	5	5	5	5	5	5	1019
-explain select * from t0 where
-(key1 < 3 or key2 < 3) and (key3 < 4 or key4 < 4) and (key5 < 2 or key6 < 2);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2,i3,i4,i5,i6	i1,i2	4,4	NULL	6	Using sort_union(i1,i2); Using where
-explain select * from t0 where
-(key1 < 3 or key2 < 3) and (key3 < 100);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2,i3	i1,i2	4,4	NULL	6	Using sort_union(i1,i2); Using where
-explain select * from t0 where
-(key1 < 3 or key2 < 3) and (key3 < 1000);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2,i3	i1,i2	4,4	NULL	6	Using sort_union(i1,i2); Using where
-explain select * from t0 where
-((key1 < 4 or key2 < 4) and (key2 <5 or key3 < 4))
-or
-key2 > 5;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	ALL	i1,i2,i3	NULL	NULL	NULL	1024	Using where
-explain select * from t0 where
-((key1 < 4 or key2 < 4) and (key2 <5 or key3 < 4))
-or
-key1 < 7;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2,i3	i1,i2	4,4	NULL	10	Using sort_union(i1,i2); Using where
-select * from t0 where
-((key1 < 4 or key2 < 4) and (key2 <5 or key3 < 4))
-or
-key1 < 7;
-key1	key2	key3	key4	key5	key6	key7	key8
-1	1	1	1	1	1	1	1023
-2	2	2	2	2	2	2	1022
-3	3	3	3	3	3	3	1021
-4	4	4	4	4	4	4	1020
-5	5	5	5	5	5	5	1019
-6	6	6	6	6	6	6	1018
-explain select * from t0 where
-((key1 < 4 or key2 < 4) and (key3 <5 or key5 < 4))
-or
-((key5 < 5 or key6 < 6) and (key7 <7 or key8 < 4));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2,i3,i5,i6,i7,i8	i1,i2,i5,i6	4,4,4,4	NULL	19	Using sort_union(i1,i2,i5,i6); Using where
-explain select * from t0 where
-((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
-or
-((key7 <7 or key8 < 4) and (key5 < 5 or key6 < 6));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2,i3,i5,i6,i7,i8	i3,i5,i7,i8	4,4,4,4	NULL	20	Using sort_union(i3,i5,i7,i8); Using where
-explain select * from t0 where
-((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
-or
-((key3 <7 or key5 < 2) and (key5 < 5 or key6 < 6));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2,i3,i5,i6	i3,i5	4,4	NULL	11	Using sort_union(i3,i5); Using where
-explain select * from t0 where
-((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
-or
-(((key3 <7 and key7 < 6) or key5 < 2) and (key5 < 5 or key6 < 6));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2,i3,i5,i6,i7	i3,i5	4,4	NULL	11	Using sort_union(i3,i5); Using where
-explain select * from t0 where
-((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
-or
-((key3 >=5 or key5 < 2) and (key5 < 5 or key6 < 6));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	ALL	i1,i2,i3,i5,i6	NULL	NULL	NULL	1024	Using where
-explain select * from t0 force index(i1, i2, i3, i4, i5, i6 ) where
-((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
-or
-((key3 >=5 or key5 < 2) and (key5 < 5 or key6 < 6));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2,i3,i5,i6	i3,i5	0,4	NULL	1024	Using sort_union(i3,i5); Using where
-select * from t0 where key1 < 5 or key8 < 4 order by key1;
-key1	key2	key3	key4	key5	key6	key7	key8
-1	1	1	1	1	1	1	1023
-2	2	2	2	2	2	2	1022
-3	3	3	3	3	3	3	1021
-4	4	4	4	4	4	4	1020
-1021	1021	1021	1021	1021	1021	1021	3
-1022	1022	1022	1022	1022	1022	1022	2
-1023	1023	1023	1023	1023	1023	1023	1
-1024	1024	1024	1024	1024	1024	1024	0
-explain
-select * from t0 where key1 < 5 or key8 < 4 order by key1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i8	i1,i8	4,4	NULL	9	Using sort_union(i1,i8); Using where; Using filesort
-create table t2 like t0;
-insert into t2 select * from t0;
-alter table t2 add index i1_3(key1, key3);
-alter table t2 add index i2_3(key2, key3);
-alter table t2 drop index i1;
-alter table t2 drop index i2;
-alter table t2 add index i321(key3, key2, key1);
-explain select key3 from t2 where key1 = 100 or key2 = 100;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t2	index_merge	i1_3,i2_3	i1_3,i2_3	4,4	NULL	2	Using sort_union(i1_3,i2_3); Using where
-explain select key3 from t2 where key1 < 500 or key2 < 500;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t2	index	i1_3,i2_3	i321	12	NULL	1024	Using where; Using index
-explain select key7 from t2 where key1 <100 or key2 < 100;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t2	index_merge	i1_3,i2_3	i1_3,i2_3	4,4	NULL	188	Using sort_union(i1_3,i2_3); Using where
-create table t4 (
-key1a int not null,
-key1b int not null,
-key2  int not null,
-key2_1 int not null,
-key2_2 int not null,
-key3  int not null,
-index i1a (key1a, key1b),
-index i1b (key1b, key1a),
-index i2_1(key2, key2_1),
-index i2_2(key2, key2_1)
-);
-Warnings:
-Note	1831	Duplicate index `i2_2`. This is deprecated and will be disallowed in a future release
-insert into t4 select key1,key1,key1 div 10, key1 % 10, key1 % 10, key1 from t0;
-select * from t4 where key1a = 3 or key1b = 4;
-key1a	key1b	key2	key2_1	key2_2	key3
-3	3	0	3	3	3
-4	4	0	4	4	4
-explain select * from t4 where key1a = 3 or key1b = 4;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	index_merge	i1a,i1b	i1a,i1b	4,4	NULL	2	Using sort_union(i1a,i1b); Using where
-explain select * from t4 where key2 = 1 and (key2_1 = 1 or key3 = 5);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	ref	i2_1,i2_2	i2_1	4	const	10	Using where
-explain select * from t4 where key2 = 1 and (key2_1 = 1 or key2_2 = 5);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	ref	i2_1,i2_2	i2_1	4	const	10	Using where
-explain select * from t4 where key2_1 = 1 or key2_2 = 5;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	ALL	NULL	NULL	NULL	NULL	1024	Using where
-create table t1 like t0;
-insert into t1 select * from t0;
-explain select * from t0 left join t1 on (t0.key1=t1.key1)
-where t0.key1=3 or t0.key2=4;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	2	Using union(i1,i2); Using where
-1	SIMPLE	t1	ref	i1	i1	4	test.t0.key1	1	
-select * from t0 left join t1 on (t0.key1=t1.key1)
-where t0.key1=3 or t0.key2=4;
-key1	key2	key3	key4	key5	key6	key7	key8	key1	key2	key3	key4	key5	key6	key7	key8
-3	3	3	3	3	3	3	1021	3	3	3	3	3	3	3	1021
-4	4	4	4	4	4	4	1020	4	4	4	4	4	4	4	1020
-explain
-select * from t0,t1 where (t0.key1=t1.key1) and ( t0.key1=3 or t0.key2=4);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	2	Using union(i1,i2); Using where
-1	SIMPLE	t1	ref	i1	i1	4	test.t0.key1	1	
-explain
-select * from t0,t1 where (t0.key1=t1.key1) and
-(t0.key1=3 or t0.key2=4) and t1.key1<200;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	2	Using union(i1,i2); Using where
-1	SIMPLE	t1	ref	i1	i1	4	test.t0.key1	1	
-explain
-select * from t0,t1 where (t0.key1=t1.key1) and
-(t0.key1=3 or t0.key2<4) and t1.key1=2;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	ref	i1,i2	i1	4	const	1	Using where
-1	SIMPLE	t1	ref	i1	i1	4	const	1	
-explain select * from t0,t1 where t0.key1 = 5 and
-(t1.key1 = t0.key1 or t1.key8 = t0.key1);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	ref	i1	i1	4	const	1	
-1	SIMPLE	t1	index_merge	i1,i8	i1,i8	4,4	NULL	2	Using union(i1,i8); Using where; Using join buffer (flat, BNL join)
-explain select * from t0,t1 where t0.key1 < 3 and
-(t1.key1 = t0.key1 or t1.key8 = t0.key1);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	range	i1	i1	4	NULL	3	Using index condition
-1	SIMPLE	t1	ALL	i1,i8	NULL	NULL	NULL	1024	Range checked for each record (index map: 0x81)
-explain select * from t1 where key1=3 or key2=4
-union select * from t1 where key1<4 or key3=5;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	t1	index_merge	i1,i2	i1,i2	4,4	NULL	2	Using union(i1,i2); Using where
-2	UNION	t1	index_merge	i1,i3	i1,i3	4,4	NULL	5	Using sort_union(i1,i3); Using where
-NULL	UNION RESULT	<union1,2>	ALL	NULL	NULL	NULL	NULL	NULL	
-set @tmp_optimizer_switch=@@optimizer_switch;
-set optimizer_switch='derived_merge=off,derived_with_keys=off';
-explain select * from (select * from t1 where key1 = 3 or key2 =3) as Z where key8 >5;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	2	Using where
-2	DERIVED	t1	index_merge	i1,i2,i8	i1,i2	4,4	NULL	2	Using union(i1,i2); Using where
-set optimizer_switch=@tmp_optimizer_switch;
-create table t3 like t0;
-insert into t3 select * from t0;
-alter table t3 add key9 int not null, add index i9(key9);
-alter table t3 add keyA int not null, add index iA(keyA);
-alter table t3 add keyB int not null, add index iB(keyB);
-alter table t3 add keyC int not null, add index iC(keyC);
-update t3 set key9=key1,keyA=key1,keyB=key1,keyC=key1;
-explain select * from t3 where
-key1=1 or key2=2 or key3=3 or key4=4 or
-key5=5 or key6=6 or key7=7 or key8=8 or
-key9=9 or keyA=10 or keyB=11 or keyC=12;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t3	index_merge	i1,i2,i3,i4,i5,i6,i7,i8,i9,iA,iB,iC	i1,i2,i3,i4,i5,i6,i7,i8,i9,iA,iB,iC	4,4,4,4,4,4,4,4,4,4,4,4	NULL	12	Using union(i1,i2,i3,i4,i5,i6,i7,i8,i9,iA,iB,iC); Using where
-select * from t3 where
-key1=1 or key2=2 or key3=3 or key4=4 or
-key5=5 or key6=6 or key7=7 or key8=8 or
-key9=9 or keyA=10 or keyB=11 or keyC=12;
-key1	key2	key3	key4	key5	key6	key7	key8	key9	keyA	keyB	keyC
-1	1	1	1	1	1	1	1023	1	1	1	1
-2	2	2	2	2	2	2	1022	2	2	2	2
-3	3	3	3	3	3	3	1021	3	3	3	3
-4	4	4	4	4	4	4	1020	4	4	4	4
-5	5	5	5	5	5	5	1019	5	5	5	5
-6	6	6	6	6	6	6	1018	6	6	6	6
-7	7	7	7	7	7	7	1017	7	7	7	7
-9	9	9	9	9	9	9	1015	9	9	9	9
-10	10	10	10	10	10	10	1014	10	10	10	10
-11	11	11	11	11	11	11	1013	11	11	11	11
-12	12	12	12	12	12	12	1012	12	12	12	12
-1016	1016	1016	1016	1016	1016	1016	8	1016	1016	1016	1016
-explain select * from t0 where key1 < 3 or key2 < 4;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t0	index_merge	i1,i2	i1,i2	4,4	NULL	7	Using sort_union(i1,i2); Using where
-select * from t0 where key1 < 3 or key2 < 4;
-key1	key2	key3	key4	key5	key6	key7	key8
-1	1	1	1	1	1	1	1023
-2	2	2	2	2	2	2	1022
-3	3	3	3	3	3	3	1021
-update t0 set key8=123 where key1 < 3 or key2 < 4;
-select * from t0 where key1 < 3 or key2 < 4;
-key1	key2	key3	key4	key5	key6	key7	key8
-1	1	1	1	1	1	1	123
-2	2	2	2	2	2	2	123
-3	3	3	3	3	3	3	123
-delete from t0 where key1 < 3 or key2 < 4;
-select * from t0 where key1 < 3 or key2 < 4;
-key1	key2	key3	key4	key5	key6	key7	key8
-select count(*) from t0;
-count(*)
-1021
-drop table t4;
-create table t4 (a int);
-insert into t4 values (1),(4),(3);
-set @save_join_buffer_size=@@join_buffer_size;
-set join_buffer_size= 4096;
-explain select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
-from t0 as A force index(i1,i2), t0 as B force index (i1,i2)
-where (A.key1 < 500000 or A.key2 < 3)
-and   (B.key1 < 500000 or B.key2 < 3);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	A	index_merge	i1,i2	i1,i2	4,4	NULL	1013	Using sort_union(i1,i2); Using where
-1	SIMPLE	B	index_merge	i1,i2	i1,i2	4,4	NULL	1013	Using sort_union(i1,i2); Using where; Using join buffer (flat, BNL join)
-select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
-from t0 as A force index(i1,i2), t0 as B force index (i1,i2)
-where (A.key1 < 500000 or A.key2 < 3)
-and   (B.key1 < 500000 or B.key2 < 3);
-max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
-10240
-update t0 set key1=1;
-explain select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
-from t0 as A force index(i1,i2), t0 as B force index (i1,i2)
-where (A.key1 = 1 or A.key2 = 1)
-and   (B.key1 = 1 or B.key2 = 1);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	A	index_merge	i1,i2	i1,i2	4,4	NULL	1020	Using union(i1,i2); Using where
-1	SIMPLE	B	index_merge	i1,i2	i1,i2	4,4	NULL	1020	Using union(i1,i2); Using where; Using join buffer (flat, BNL join)
-select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
-from t0 as A force index(i1,i2), t0 as B force index (i1,i2)
-where (A.key1 = 1 or A.key2 = 1)
-and   (B.key1 = 1 or B.key2 = 1);
-max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
-8194
-alter table t0 add filler1 char(200), add filler2 char(200), add filler3 char(200);
-update t0 set key2=1, key3=1, key4=1, key5=1,key6=1,key7=1 where key7 < 500;
-explain select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
-from t0 as A straight_join t0 as B
-where (A.key1 = 1 and A.key2 = 1 and A.key3 = 1 and A.key4=1 and A.key5=1 and A.key6=1 and A.key7 = 1 or A.key8=1)
-and (B.key1 = 1 and B.key2 = 1 and B.key3 = 1 and B.key4=1 and B.key5=1 and B.key6=1 and B.key7 = 1 or B.key8=1);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	A	index_merge	i1,i2,i3,i4,i5,i6,i7?,i8	i2,i3,i4,i5,i6,i7?,i8	X	NULL	#	Using union(intersect(i2,i3,i4,i5,i6,i7?),i8); Using where
-1	SIMPLE	B	index_merge	i1,i2,i3,i4,i5,i6,i7?,i8	i2,i3,i4,i5,i6,i7?,i8	X	NULL	#	Using union(intersect(i2,i3,i4,i5,i6,i7?),i8); Using where; Using join buffer (flat, BNL join)
-select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
-from t0 as A straight_join t0 as B
-where (A.key1 = 1 and A.key2 = 1 and A.key3 = 1 and A.key4=1 and A.key5=1 and A.key6=1 and A.key7 = 1 or A.key8=1)
-and (B.key1 = 1 and B.key2 = 1 and B.key3 = 1 and B.key4=1 and B.key5=1 and B.key6=1 and B.key7 = 1 or B.key8=1);
-max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
-8186
-set join_buffer_size= @save_join_buffer_size;
-drop table t0, t1, t2, t3, t4;
-CREATE TABLE t1 (
-cola char(3) not null, colb char(3) not null,  filler char(200),
-key(cola), key(colb)
-);
-INSERT INTO t1 VALUES ('foo','bar', 'ZZ'),('fuz','baz', 'ZZ');
-OPTIMIZE TABLE t1;
-Table	Op	Msg_type	Msg_text
-test.t1	optimize	status	OK
-select count(*) from t1;
-count(*)
-8704
-explain select * from t1 WHERE cola = 'foo' AND colb = 'bar';
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	cola,colb	cola,colb	3,3	NULL	32	Using intersect(cola,colb); Using where
-explain select * from t1 force index(cola,colb) WHERE cola = 'foo' AND colb = 'bar';
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	cola,colb	cola,colb	3,3	NULL	32	Using intersect(cola,colb); Using where
-drop table t1;
-create table t0 (a int);
-insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
-create table t1 (
-a int, b int,
-filler1 char(200), filler2 char(200),
-key(a),key(b)
-);
-insert into t1 select @v:= A.a, @v, 't1', 'filler2' from t0 A, t0 B, t0 C;
-create table t2 like t1;
-create table t3 (
-a int, b int,
-filler1 char(200), filler2 char(200),
-key(a),key(b)
-) engine=merge union=(t1,t2);
-explain select * from t1 where a=1 and b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b	a,b	5,5	NULL	#	Using intersect(a,b); Using where
-explain select * from t3 where a=1 and b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t3	index_merge	a,b	a,b	5,5	NULL	#	Using intersect(a,b); Using where
-drop table t3;
-drop table t0, t1, t2;
-CREATE TABLE t1(a INT);
-INSERT INTO t1 VALUES(1);
-CREATE TABLE t2(a INT, b INT, dummy CHAR(16) DEFAULT '', KEY(a), KEY(b));
-INSERT INTO t2(a,b) VALUES
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(1,2);
-LOCK TABLES t1 WRITE, t2 WRITE;
-INSERT INTO t2(a,b) VALUES(1,2);
-SELECT t2.a FROM t1,t2 WHERE t2.b=2 AND t2.a=1;
-a
-1
-1
-UNLOCK TABLES;
-DROP TABLE t1, t2;
-CREATE TABLE `t1` (
-`a` int(11) DEFAULT NULL,
-`filler` char(200) DEFAULT NULL,
-`b` int(11) DEFAULT NULL,
-KEY `a` (`a`),
-KEY `b` (`b`)
-) ENGINE=MEMORY DEFAULT CHARSET=latin1;
-insert into t1 values
-(0, 'filler', 0), (1, 'filler', 1), (2, 'filler', 2), (3, 'filler', 3), 
-(4, 'filler', 4), (5, 'filler', 5), (6, 'filler', 6), (7, 'filler', 7), 
-(8, 'filler', 8), (9, 'filler', 9), (0, 'filler', 0), (1, 'filler', 1), 
-(2, 'filler', 2), (3, 'filler', 3), (4, 'filler', 4), (5, 'filler', 5), 
-(6, 'filler', 6), (7, 'filler', 7), (8, 'filler', 8), (9, 'filler', 9), 
-(10, 'filler', 10), (11, 'filler', 11), (12, 'filler', 12), (13, 'filler', 13),
-(14, 'filler', 14), (15, 'filler', 15), (16, 'filler', 16), (17, 'filler', 17), 
-(18, 'filler', 18), (19, 'filler', 19), (4, '5      ', 0), (5, '4      ', 0), 
-(4, '4      ', 0), (4, 'qq     ', 5), (5, 'qq     ', 4), (4, 'zz     ', 4);
-create table t2(
-`a` int(11) DEFAULT NULL,
-`filler` char(200) DEFAULT NULL,
-`b` int(11) DEFAULT NULL,
-KEY USING BTREE (`a`),
-KEY USING BTREE (`b`)
-) ENGINE=MEMORY DEFAULT CHARSET=latin1;
-insert into t2 select * from t1;
-must use sort-union rather than union:
-explain select * from t1 where a=4 or b=4;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b	a,b	5,5	NULL	#	Using sort_union(a,b); Using where
-select * from t1 where a=4 or b=4;
-a	filler	b
-4	4	0
-4	5	0
-4	filler	4
-4	filler	4
-4	qq	5
-4	zz	4
-5	qq	4
-select * from t1 ignore index(a,b) where a=4 or b=4;
-a	filler	b
-4	4	0
-4	5	0
-4	filler	4
-4	filler	4
-4	qq	5
-4	zz	4
-5	qq	4
-must use union, not sort-union:
-explain select * from t2 where a=4 or b=4;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t2	index_merge	a,b	a,b	5,5	NULL	#	Using union(a,b); Using where
-select * from t2 where a=4 or b=4;
-a	filler	b
-4	4	0
-4	5	0
-4	filler	4
-4	filler	4
-4	qq	5
-4	zz	4
-5	qq	4
-drop table t1, t2;
-CREATE TABLE t1 (a varchar(8), b set('a','b','c','d','e','f','g','h'),
-KEY b(b), KEY a(a));
-INSERT INTO t1 VALUES ('y',''), ('z','');
-SELECT b,a from t1 WHERE (b!='c' AND b!='f' && b!='h') OR 
-(a='pure-S') OR (a='DE80337a') OR (a='DE80799');
-b	a
-	y
-	z
-DROP TABLE t1;
-#
-# BUG#40974: Incorrect query results when using clause evaluated using range check
-#
-create table t0 (a int);
-insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
-create table t1 (a int);
-insert into t1 values (1),(2);
-create table t2(a int, b int);
-insert into t2 values (1,1), (2, 1000);
-create table t3 (a int, b int, filler char(100), key(a), key(b));
-insert into t3 select 1000, 1000,'filler' from t0 A, t0 B, t0 C;
-insert into t3 values (1,1,'data');
-insert into t3 values (1,1,'data');
-The plan should be ALL/ALL/ALL(Range checked for each record (index map: 0x3)
-explain select * from t1 
-where exists (select 1 from t2, t3 
-where t2.a=t1.a and (t3.a=t2.b or t3.b=t2.b or t3.b=t2.b+1));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	
-1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	Using where
-1	PRIMARY	t3	ALL	a,b	NULL	NULL	NULL	1002	Range checked for each record (index map: 0x3); FirstMatch(t1)
-select * from t1 
-where exists (select 1 from t2, t3 
-where t2.a=t1.a and (t3.a=t2.b or t3.b=t2.b or t3.b=t2.b+1));
-a
-1
-2
-drop table t0, t1, t2, t3;
-#
-# BUG#44810: index merge and order by with low sort_buffer_size 
-# crashes server!
-#
-CREATE TABLE t1(a VARCHAR(128),b VARCHAR(128),KEY(A),KEY(B));
-INSERT INTO t1 VALUES (REPEAT('a',128),REPEAT('b',128));
-INSERT INTO t1 SELECT * FROM t1;
-INSERT INTO t1 SELECT * FROM t1;
-INSERT INTO t1 SELECT * FROM t1;
-INSERT INTO t1 SELECT * FROM t1;
-INSERT INTO t1 SELECT * FROM t1;
-INSERT INTO t1 SELECT * FROM t1;
-SET SESSION sort_buffer_size=1024*8;
-EXPLAIN 
-SELECT * FROM t1 FORCE INDEX(a,b) WHERE a LIKE 'a%' OR b LIKE 'b%' 
-ORDER BY a,b;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b	a,b	131,131	NULL	64	Using sort_union(a,b); Using where; Using filesort
-SELECT * FROM t1 FORCE INDEX(a,b) WHERE a LIKE 'a%' OR b LIKE 'b%' 
-ORDER BY a,b;
-SET SESSION sort_buffer_size=DEFAULT;
-DROP TABLE t1;
-End of 5.0 tests
-#---------------- ROR-index_merge tests -----------------------
-SET SESSION STORAGE_ENGINE = MyISAM;
-drop table if exists  t0,t1,t2;
-create table t1
-(
-/* Field names reflect value(rowid) distribution, st=STairs, swt= SaWTooth */
-st_a int not null default 0,
-swt1a int not null default 0,
-swt2a int not null default 0,
-st_b int not null default 0,
-swt1b int not null default 0,
-swt2b int not null default 0,
-/* fields/keys for row retrieval tests */
-key1 int,
-key2 int,
-key3 int,
-key4 int,
-/* make rows much bigger then keys */
-filler1 char (200),
-filler2 char (200),
-filler3 char (200),
-filler4 char (200),
-filler5 char (200),
-filler6 char (200),
-/* order of keys is important */
-key sta_swt12a(st_a,swt1a,swt2a),
-key sta_swt1a(st_a,swt1a),
-key sta_swt2a(st_a,swt2a),
-key sta_swt21a(st_a,swt2a,swt1a),
-key st_a(st_a),
-key stb_swt1a_2b(st_b,swt1b,swt2a),
-key stb_swt1b(st_b,swt1b),
-key st_b(st_b),
-key(key1),
-key(key2),
-key(key3),
-key(key4)
-) ;
-create table t0 as select * from t1;
-# Printing of many insert into t0 values (....) disabled.
-alter table t1 disable keys;
-# Printing of many insert into t1 select .... from t0 disabled.
-# Printing of many insert into t1 (...) values (....) disabled.
-alter table t1 enable keys;
-select count(*) from t1;
-count(*)
-64801
-explain select key1,key2 from t1 where key1=100 and key2=100;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	77	Using intersect(key1,key2); Using where; Using index
-select key1,key2 from t1 where key1=100 and key2=100;
-key1	key2
-100	100
-explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2,key3,key4	key1,key2,key3,key4	5,5,5,5	NULL	154	Using union(intersect(key1,key2),intersect(key3,key4)); Using where
-select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-key1	key2	key3	key4	filler1
-100	100	100	100	key1-key2-key3-key4
-insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, -1, -1, 'key1-key2');
-insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, 100, 100, 'key4-key3');
-explain select key1,key2,filler1 from t1 where key1=100 and key2=100;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	77	Using intersect(key1,key2); Using where
-select key1,key2,filler1 from t1 where key1=100 and key2=100;
-key1	key2	filler1
-100	100	key1-key2-key3-key4
-100	100	key1-key2
-explain select key1,key2 from t1 where key1=100 and key2=100;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	77	Using intersect(key1,key2); Using where; Using index
-select key1,key2 from t1 where key1=100 and key2=100;
-key1	key2
-100	100
-100	100
-explain select key1,key2,key3,key4 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2,key3,key4	key1,key2,key3,key4	5,5,5,5	NULL	154	Using union(intersect(key1,key2),intersect(key3,key4)); Using where
-select key1,key2,key3,key4 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-key1	key2	key3	key4
-100	100	100	100
-100	100	-1	-1
--1	-1	100	100
-explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2,key3,key4	key1,key2,key3,key4	5,5,5,5	NULL	154	Using union(intersect(key1,key2),intersect(key3,key4)); Using where
-select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-key1	key2	key3	key4	filler1
-100	100	100	100	key1-key2-key3-key4
-100	100	-1	-1	key1-key2
--1	-1	100	100	key4-key3
-explain select key1,key2,key3 from t1 where key1=100 and key2=100 and key3=100;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2,key3	key1,key2,key3	5,5,5	NULL	2	Using intersect(key1,key2,key3); Using where; Using index
-select key1,key2,key3 from t1 where key1=100 and key2=100 and key3=100;
-key1	key2	key3
-100	100	100
-insert into t1 (key1,key2,key3,key4,filler1) values (101,101,101,101, 'key1234-101');
-explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=101;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2,key3	key1,key2,key3	5,5,5	NULL	83	Using union(intersect(key1,key2),key3); Using where
-select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=101;
-key1	key2	key3	key4	filler1
-100	100	100	100	key1-key2-key3-key4
-100	100	-1	-1	key1-key2
-101	101	101	101	key1234-101
-select key1,key2, filler1 from t1 where key1=100 and key2=100;
-key1	key2	filler1
-100	100	key1-key2-key3-key4
-100	100	key1-key2
-update t1 set filler1='to be deleted' where key1=100 and key2=100;
-update t1 set key1=200,key2=200 where key1=100 and key2=100;
-delete from t1 where key1=200 and key2=200;
-select key1,key2,filler1 from t1 where key2=100 and key2=200;
-key1	key2	filler1
-explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2,key3,key4	key1,key2,key3,key4	5,5,5,5	NULL	152	Using union(intersect(key1,key2),intersect(key3,key4)); Using where
-select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-key1	key2	key3	key4	filler1
--1	-1	100	100	key4-key3
-delete from t1 where key3=100 and key4=100;
-explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2,key3,key4	key1,key2,key3,key4	5,5,5,5	NULL	152	Using union(intersect(key1,key2),intersect(key3,key4)); Using where
-select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
-key1	key2	key3	key4	filler1
-explain select key1,key2 from t1 where key1=100 and key2=100;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	76	Using intersect(key1,key2); Using where; Using index
-select key1,key2 from t1 where key1=100 and key2=100;
-key1	key2
-insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-1');
-insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-2');
-insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-3');
-explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2,key3,key4	key3,key1,key2,key4	5,5,5,5	NULL	136	Using union(key3,intersect(key1,key2),key4); Using where
-select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
-key1	key2	key3	key4	filler1
-100	100	200	200	key1-key2-key3-key4-3
-100	100	200	200	key1-key2-key3-key4-2
-100	100	200	200	key1-key2-key3-key4-1
-insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, -1, 200,'key4');
-explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2,key3,key4	key3,key1,key2,key4	5,5,5,5	NULL	146	Using union(key3,intersect(key1,key2),key4); Using where
-select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
-key1	key2	key3	key4	filler1
-100	100	200	200	key1-key2-key3-key4-3
-100	100	200	200	key1-key2-key3-key4-2
-100	100	200	200	key1-key2-key3-key4-1
--1	-1	-1	200	key4
-insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, 200, -1,'key3');
-explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2,key3,key4	key3,key1,key2,key4	5,5,5,5	NULL	156	Using union(key3,intersect(key1,key2),key4); Using where
-select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
-key1	key2	key3	key4	filler1
-100	100	200	200	key1-key2-key3-key4-3
-100	100	200	200	key1-key2-key3-key4-2
-100	100	200	200	key1-key2-key3-key4-1
--1	-1	-1	200	key4
--1	-1	200	-1	key3
-explain select * from t1 where st_a=1 and st_b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	st_a,st_b	4,4	NULL	3515	Using intersect(st_a,st_b); Using where
-explain select st_a,st_b from t1 where st_a=1 and st_b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	st_a,st_b	4,4	NULL	3515	Using intersect(st_a,st_b); Using where; Using index
-explain select st_a from t1 ignore index (st_a) where st_a=1 and st_b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,stb_swt1a_2b,stb_swt1b,st_b	st_b	4	const	15093	Using where
-explain select * from t1 where st_a=1 and swt1a=1 and swt2a=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a	sta_swt21a	12	const,const,const	971	
-explain select * from t1 where st_b=1 and swt1b=1 and swt2b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	stb_swt1a_2b,stb_swt1b,st_b	stb_swt1a_2b	8	const,const	3879	Using where
-explain select * from t1 where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt12a,stb_swt1a_2b	12,12	NULL	58	Using intersect(sta_swt12a,stb_swt1a_2b); Using where
-explain select * from t1 ignore index (sta_swt21a, stb_swt1a_2b)
-where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,st_a,stb_swt1b,st_b	sta_swt12a,stb_swt1b	12,8	NULL	58	Using intersect(sta_swt12a,stb_swt1b); Using where
-explain select * from t1 ignore index (sta_swt21a, sta_swt12a, stb_swt1a_2b)
-where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt1a,sta_swt2a,st_a,stb_swt1b,st_b	sta_swt1a,sta_swt2a,stb_swt1b	8,8,8	NULL	57	Using intersect(sta_swt1a,sta_swt2a,stb_swt1b); Using where
-explain select * from t1 ignore index (sta_swt21a, sta_swt12a, stb_swt1a_2b, stb_swt1b)
-where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt1a,sta_swt2a,st_a,st_b	sta_swt1a,sta_swt2a,st_b	8,8,4	NULL	223	Using intersect(sta_swt1a,sta_swt2a,st_b); Using where
-explain select * from t1
-where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt12a,stb_swt1a_2b	12,12	NULL	58	Using intersect(sta_swt12a,stb_swt1a_2b); Using where
-explain select * from t1
-where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt1a,stb_swt1b	8,8	NULL	232	Using intersect(sta_swt1a,stb_swt1b); Using where
-explain select st_a from t1
-where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt1a,stb_swt1b	8,8	NULL	232	Using intersect(sta_swt1a,stb_swt1b); Using where; Using index
-explain select st_a from t1
-where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt1a,stb_swt1b	8,8	NULL	232	Using intersect(sta_swt1a,stb_swt1b); Using where; Using index
-drop table t0,t1;
-create table t2 (
-a char(10),
-b char(10),
-filler1 char(255),
-filler2 char(255),
-key(a(5)),
-key(b(5))
-);
-select count(a) from t2 where a='BBBBBBBB';
-count(a)
-4
-select count(a) from t2 where b='BBBBBBBB';
-count(a)
-4
-expla_or_bin select count(a_or_b) from t2 where a_or_b='AAAAAAAA' a_or_bnd a_or_b='AAAAAAAA';
-id	select_type	ta_or_ba_or_ble	type	possia_or_ble_keys	key	key_len	ref	rows	Extra_or_b
-1	SIMPLE	t2	ref	a_or_b,a_or_b	a_or_b	6	const	4	Using where
-select count(a) from t2 where a='AAAAAAAA' and b='AAAAAAAA';
-count(a)
-4
-select count(a) from t2 ignore index(a,b) where a='AAAAAAAA' and b='AAAAAAAA';
-count(a)
-4
-insert into t2 values ('ab', 'ab', 'uh', 'oh');
-explain select a from t2 where a='ab';
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t2	ref	a	a	6	const	1	Using where
-drop table t2;
-CREATE TABLE t1(c1 INT, c2 INT DEFAULT 0, c3 CHAR(255) DEFAULT '',
-KEY(c1), KEY(c2), KEY(c3));
-INSERT INTO t1(c1) VALUES(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),
-(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0),(0);
-INSERT INTO t1 VALUES(0,0,0);
-CREATE TABLE t2(c1 int);
-INSERT INTO t2 VALUES(1);
-DELETE t1 FROM t1,t2 WHERE t1.c1=0 AND t1.c2=0;
-SELECT * FROM t1;
-c1	c2	c3
-DROP TABLE t1,t2;
-#---------------- Index merge test 2 -------------------------------------------
-SET SESSION STORAGE_ENGINE = MyISAM;
-drop table if exists t1,t2;
-create table t1
-(
-key1 int not null,
-key2 int not null,
-INDEX i1(key1),
-INDEX i2(key2)
-);
-explain select * from t1 where key1 < 5 or key2 > 197;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	i1,i2	i1,i2	4,4	NULL	10	Using sort_union(i1,i2); Using where
-select * from t1 where key1 < 5 or key2 > 197;
-key1	key2
-0	200
-1	199
-2	198
-3	197
-4	196
-explain select * from t1 where key1 < 3 or key2 > 195;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	i1,i2	i1,i2	4,4	NULL	10	Using sort_union(i1,i2); Using where
-select * from t1 where key1 < 3 or key2 > 195;
-key1	key2
-0	200
-1	199
-2	198
-3	197
-4	196
-alter table t1 add str1 char (255) not null,
-add zeroval int not null default 0,
-add str2 char (255) not null,
-add str3 char (255) not null;
-update t1 set str1='aaa', str2='bbb', str3=concat(key2, '-', key1 div 2, '_' ,if(key1 mod 2 = 0, 'a', 'A'));
-alter table t1 add primary key (str1, zeroval, str2, str3);
-explain select * from t1 where key1 < 5 or key2 > 197;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	i1,i2	i1,i2	4,4	NULL	10	Using sort_union(i1,i2); Using where
-select * from t1 where key1 < 5 or key2 > 197;
-key1	key2	str1	zeroval	str2	str3
-0	200	aaa	0	bbb	200-0_a
-1	199	aaa	0	bbb	199-0_A
-2	198	aaa	0	bbb	198-1_a
-3	197	aaa	0	bbb	197-1_A
-4	196	aaa	0	bbb	196-2_a
-explain select * from t1 where key1 < 3 or key2 > 195;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	i1,i2	i1,i2	4,4	NULL	10	Using sort_union(i1,i2); Using where
-select * from t1 where key1 < 3 or key2 > 195;
-key1	key2	str1	zeroval	str2	str3
-0	200	aaa	0	bbb	200-0_a
-1	199	aaa	0	bbb	199-0_A
-2	198	aaa	0	bbb	198-1_a
-3	197	aaa	0	bbb	197-1_A
-4	196	aaa	0	bbb	196-2_a
-drop table t1;
-create table t1 (
-pk    integer not null auto_increment primary key,
-key1  integer,
-key2  integer not null,
-filler char  (200),
-index (key1),
-index (key2)
-);
-show warnings;
-Level	Code	Message
-explain select pk from t1 where key1 = 1 and key2 = 1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	key1,key2	key1	5	const	4	Using where
-select pk from t1 where key2 = 1 and key1 = 1;
-pk
-26
-27
-select pk from t1 ignore index(key1,key2) where key2 = 1 and key1 = 1;
-pk
-26
-27
-drop table t1;
-create table t1 (
-pk int primary key auto_increment,
-key1a  int,
-key2a  int,
-key1b  int,
-key2b  int,
-dummy1 int,
-dummy2 int,
-dummy3 int,
-dummy4 int,
-key3a  int,
-key3b  int,
-filler1 char (200),
-index i1(key1a, key1b),
-index i2(key2a, key2b),
-index i3(key3a, key3b)
-);
-create table t2 (a int);
-insert into t2 values (0),(1),(2),(3),(4),(NULL);
-insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
-select A.a, B.a, C.a, D.a, C.a, D.a from t2 A,t2 B,t2 C, t2 D;
-insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
-select key1a, key1b, key2a, key2b, key3a, key3b from t1;
-insert into t1 (key1a, key1b, key2a, key2b, key3a, key3b)
-select key1a, key1b, key2a, key2b, key3a, key3b from t1;
-analyze table t1;
-Table	Op	Msg_type	Msg_text
-test.t1	analyze	status	OK
-select count(*) from t1;
-count(*)
-5184
-explain select count(*) from t1 where
-key1a = 2 and key1b is null and  key2a = 2 and key2b is null;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	i1,i2	i1,i2	10,10	NULL	REF	Using intersect(i1,i2); Using where; Using index
-select count(*) from t1 where
-key1a = 2 and key1b is null and key2a = 2 and key2b is null;
-count(*)
-4
-explain select count(*) from t1 where
-key1a = 2 and key1b is null and key3a = 2 and key3b is null;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	i1,i3	i1,i3	10,10	NULL	REF	Using intersect(i1,i3); Using where; Using index
-select count(*) from t1 where
-key1a = 2 and key1b is null and key3a = 2 and key3b is null;
-count(*)
-4
-drop table t1,t2;
-create table t1 (
-id1 int,
-id2 date ,
-index idx2 (id1,id2),
-index idx1 (id2)
-);
-insert into t1 values(1,'20040101'), (2,'20040102');
-select * from t1  where id1 = 1  and id2= '20040101';
-id1	id2
-1	2004-01-01
-drop table t1;
-drop view if exists v1;
-CREATE TABLE t1 (
-`oid` int(11) unsigned NOT NULL auto_increment,
-`fk_bbk_niederlassung` int(11) unsigned NOT NULL,
-`fk_wochentag` int(11) unsigned NOT NULL,
-`uhrzeit_von` time NOT NULL COMMENT 'HH:MM',
-`uhrzeit_bis` time NOT NULL COMMENT 'HH:MM',
-`geloescht` tinyint(4) NOT NULL,
-`version` int(5) NOT NULL,
-PRIMARY KEY  (`oid`),
-KEY `fk_bbk_niederlassung` (`fk_bbk_niederlassung`),
-KEY `fk_wochentag` (`fk_wochentag`),
-KEY `ix_version` (`version`)
-) DEFAULT CHARSET=latin1;
-insert  into t1 values
-(1, 38, 1, '08:00:00', '13:00:00', 0, 1),
-(2, 38, 2, '08:00:00', '13:00:00', 0, 1),
-(3, 38, 3, '08:00:00', '13:00:00', 0, 1),
-(4, 38, 4, '08:00:00', '13:00:00', 0, 1),
-(5, 38, 5, '08:00:00', '13:00:00', 0, 1),
-(6, 38, 5, '08:00:00', '13:00:00', 1, 2),
-(7, 38, 3, '08:00:00', '13:00:00', 1, 2),
-(8, 38, 1, '08:00:00', '13:00:00', 1, 2),
-(9, 38, 2, '08:00:00', '13:00:00', 1, 2),
-(10, 38, 4, '08:00:00', '13:00:00', 1, 2),
-(11, 38, 1, '08:00:00', '13:00:00', 0, 3),
-(12, 38, 2, '08:00:00', '13:00:00', 0, 3),
-(13, 38, 3, '08:00:00', '13:00:00', 0, 3),
-(14, 38, 4, '08:00:00', '13:00:00', 0, 3),
-(15, 38, 5, '08:00:00', '13:00:00', 0, 3),
-(16, 38, 4, '08:00:00', '13:00:00', 0, 4),
-(17, 38, 5, '08:00:00', '13:00:00', 0, 4),
-(18, 38, 1, '08:00:00', '13:00:00', 0, 4),
-(19, 38, 2, '08:00:00', '13:00:00', 0, 4),
-(20, 38, 3, '08:00:00', '13:00:00', 0, 4),
-(21, 7, 1, '08:00:00', '13:00:00', 0, 1),
-(22, 7, 2, '08:00:00', '13:00:00', 0, 1),
-(23, 7, 3, '08:00:00', '13:00:00', 0, 1),
-(24, 7, 4, '08:00:00', '13:00:00', 0, 1),
-(25, 7, 5, '08:00:00', '13:00:00', 0, 1);
-create view v1 as
-select
-zeit1.oid AS oid,
-zeit1.fk_bbk_niederlassung AS fk_bbk_niederlassung,
-zeit1.fk_wochentag AS fk_wochentag,
-zeit1.uhrzeit_von AS uhrzeit_von,
-zeit1.uhrzeit_bis AS uhrzeit_bis,
-zeit1.geloescht AS geloescht,
-zeit1.version AS version
-from
-t1 zeit1
-where
-(zeit1.version =
-(select max(zeit2.version) AS `max(version)`
-   from t1 zeit2
-where
-((zeit1.fk_bbk_niederlassung = zeit2.fk_bbk_niederlassung) and
-(zeit1.fk_wochentag = zeit2.fk_wochentag) and
-(zeit1.uhrzeit_von = zeit2.uhrzeit_von) and
-(zeit1.uhrzeit_bis = zeit2.uhrzeit_bis)
-)
-)
-)
-and (zeit1.geloescht = 0);
-select * from v1 where oid = 21;
-oid	fk_bbk_niederlassung	fk_wochentag	uhrzeit_von	uhrzeit_bis	geloescht	version
-21	7	1	08:00:00	13:00:00	0	1
-drop view v1;
-drop table t1;
-CREATE TABLE t1(
-t_cpac varchar(2) NOT NULL,
-t_vers varchar(4) NOT NULL,
-t_rele varchar(2) NOT NULL,
-t_cust varchar(4) NOT NULL,
-filler1 char(250) default NULL,
-filler2 char(250) default NULL,
-PRIMARY KEY (t_cpac,t_vers,t_rele,t_cust),
-UNIQUE KEY IX_4 (t_cust,t_cpac,t_vers,t_rele),
-KEY IX_5 (t_vers,t_rele,t_cust)
-);
-insert into t1 values
-('tm','2.5 ','a ','    ','',''), ('tm','2.5U','a ','stnd','',''),
-('da','3.3 ','b ','    ','',''), ('da','3.3U','b ','stnd','',''),
-('tl','7.6 ','a ','    ','',''), ('tt','7.6 ','a ','    ','',''),
-('bc','B61 ','a ','    ','',''), ('bp','B61 ','a ','    ','',''),
-('ca','B61 ','a ','    ','',''), ('ci','B61 ','a ','    ','',''),
-('cp','B61 ','a ','    ','',''), ('dm','B61 ','a ','    ','',''),
-('ec','B61 ','a ','    ','',''), ('ed','B61 ','a ','    ','',''),
-('fm','B61 ','a ','    ','',''), ('nt','B61 ','a ','    ','',''),
-('qm','B61 ','a ','    ','',''), ('tc','B61 ','a ','    ','',''),
-('td','B61 ','a ','    ','',''), ('tf','B61 ','a ','    ','',''),
-('tg','B61 ','a ','    ','',''), ('ti','B61 ','a ','    ','',''),
-('tp','B61 ','a ','    ','',''), ('ts','B61 ','a ','    ','',''),
-('wh','B61 ','a ','    ','',''), ('bc','B61U','a ','stnd','',''),
-('bp','B61U','a ','stnd','',''), ('ca','B61U','a ','stnd','',''),
-('ci','B61U','a ','stnd','',''), ('cp','B61U','a ','stnd','',''),
-('dm','B61U','a ','stnd','',''), ('ec','B61U','a ','stnd','',''),
-('fm','B61U','a ','stnd','',''), ('nt','B61U','a ','stnd','',''),
-('qm','B61U','a ','stnd','',''), ('tc','B61U','a ','stnd','',''),
-('td','B61U','a ','stnd','',''), ('tf','B61U','a ','stnd','',''),
-('tg','B61U','a ','stnd','',''), ('ti','B61U','a ','stnd','',''),
-('tp','B61U','a ','stnd','',''), ('ts','B61U','a ','stnd','',''),
-('wh','B61U','a ','stnd','','');
-show create table t1;
-Table	Create Table
-t1	CREATE TABLE `t1` (
-  `t_cpac` varchar(2) NOT NULL,
-  `t_vers` varchar(4) NOT NULL,
-  `t_rele` varchar(2) NOT NULL,
-  `t_cust` varchar(4) NOT NULL,
-  `filler1` char(250) DEFAULT NULL,
-  `filler2` char(250) DEFAULT NULL,
-  PRIMARY KEY (`t_cpac`,`t_vers`,`t_rele`,`t_cust`),
-  UNIQUE KEY `IX_4` (`t_cust`,`t_cpac`,`t_vers`,`t_rele`),
-  KEY `IX_5` (`t_vers`,`t_rele`,`t_cust`)
-) ENGINE=MyISAM DEFAULT CHARSET=latin1
-select t_vers,t_rele,t_cust,filler1 from t1 where t_vers = '7.6';
-t_vers	t_rele	t_cust	filler1
-7.6 	a 	    	
-7.6 	a 	    	
-select t_vers,t_rele,t_cust,filler1 from t1 where t_vers = '7.6'
-  and t_rele='a' and t_cust = ' ';
-t_vers	t_rele	t_cust	filler1
-7.6 	a 	    	
-7.6 	a 	    	
-drop table t1;
-create table t1 (
-pk int(11) not null auto_increment,
-a int(11) not null default '0',
-b int(11) not null default '0',
-c int(11) not null default '0',
-filler1 datetime, filler2 varchar(15),
-filler3 longtext,
-kp1 varchar(4), kp2 varchar(7),
-kp3 varchar(2), kp4 varchar(4),
-kp5 varchar(7),
-filler4 char(1),
-primary key (pk),
-key idx1(a,b,c),
-key idx2(c),
-key idx3(kp1,kp2,kp3,kp4,kp5)
-) default charset=latin1;
-set @fill=NULL;
-SELECT COUNT(*) FROM t1 WHERE b = 0 AND a = 0 AND c = 13286427 AND
-kp1='279' AND kp2='ELM0678' AND kp3='6' AND kp4='10' AND  kp5 = 'R        ';
-COUNT(*)
-1
-drop table t1;
-create table t1
-(
-key1 int not null, 
-key2 int not null default 0,
-key3 int not null default 0
-);
-insert into t1(key1) values (1),(2),(3),(4),(5),(6),(7),(8);
-set @d=8;
-insert into t1 (key1) select key1+@d from t1;
-set @d=@d*2;
-insert into t1 (key1) select key1+@d from t1;
-set @d=@d*2;
-insert into t1 (key1) select key1+@d from t1;
-set @d=@d*2;
-insert into t1 (key1) select key1+@d from t1;
-set @d=@d*2;
-insert into t1 (key1) select key1+@d from t1;
-set @d=@d*2;
-insert into t1 (key1) select key1+@d from t1;
-set @d=@d*2;
-insert into t1 (key1) select key1+@d from t1;
-set @d=@d*2;
-alter table t1 add index i2(key2);
-alter table t1 add index i3(key3);
-update t1 set key2=key1,key3=key1;
-analyze table t1;
-Table	Op	Msg_type	Msg_text
-test.t1	analyze	status	OK
-explain select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	i2,i3	i3,i2	4,4	NULL	REF	Using sort_union(i3,i2); Using where
-select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
-key1	key2	key3
-31	31	31
-32	32	32
-33	33	33
-34	34	34
-35	35	35
-36	36	36
-37	37	37
-38	38	38
-39	39	39
-drop table t1;
-#
-# Bug#56423: Different count with SELECT and CREATE SELECT queries
-#
-CREATE TABLE t1 (
-a INT,
-b INT,
-c INT,
-d INT,
-PRIMARY KEY (a),
-KEY (c),
-KEY bd (b,d)
-);
-INSERT INTO t1 VALUES
-(1, 0, 1, 0),
-(2, 1, 1, 1),
-(3, 1, 1, 1),
-(4, 0, 1, 1);
-EXPLAIN
-SELECT a
-FROM t1
-WHERE c = 1 AND b = 1 AND d = 1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	c,bd	bd	10	const,const	2	Using where
-CREATE TABLE t2 ( a INT )
-SELECT a
-FROM t1
-WHERE c = 1 AND b = 1 AND d = 1;
-SELECT * FROM t2;
-a
-2
-3
-DROP TABLE t1, t2;
-CREATE TABLE t1( a INT, b INT, KEY(a), KEY(b) );
-INSERT INTO t1 VALUES (1, 2), (1, 2), (1, 2), (1, 2);
-SELECT * FROM t1 FORCE INDEX(a, b) WHERE a = 1 AND b = 2;
-a	b
-1	2
-1	2
-1	2
-1	2
-DROP TABLE t1;
-# Code coverage of fix.
-CREATE TABLE t1 ( a INT NOT NULL AUTO_INCREMENT PRIMARY KEY, b INT);
-INSERT INTO t1 (b) VALUES (1);
-UPDATE t1 SET b = 2 WHERE a = 1;
-SELECT * FROM t1;
-a	b
-1	2
-CREATE TABLE t2 ( a INT NOT NULL AUTO_INCREMENT PRIMARY KEY, b VARCHAR(1) );
-INSERT INTO t2 (b) VALUES ('a');
-UPDATE t2 SET b = 'b' WHERE a = 1;
-SELECT * FROM t2;
-a	b
-1	b
-DROP TABLE t1, t2;
-#---------------- 2-sweeps read Index merge test 2 -------------------------------
-SET SESSION STORAGE_ENGINE = MyISAM;
-drop table if exists t1;
-create table t1 (
-pk int primary key,
-key1 int,
-key2 int,
-filler char(200),
-filler2 char(200),
-index(key1),
-index(key2)
-);
-select * from t1 where (key1 >= 2 and key1 <= 10) or (pk >= 4 and pk <=8 );
-pk	key1	key2	filler	filler2
-10	10	10	filler-data	filler-data-2
-9	9	9	filler-data	filler-data-2
-8	8	8	filler-data	filler-data-2
-7	7	7	filler-data	filler-data-2
-6	6	6	filler-data	filler-data-2
-5	5	5	filler-data	filler-data-2
-4	4	4	filler-data	filler-data-2
-3	3	3	filler-data	filler-data-2
-2	2	2	filler-data	filler-data-2
-set @maxv=1000;
-select * from t1 where
-(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
-or key1=18 or key1=60;
-pk	key1	key2	filler	filler2
-1000	1000	1000	filler-data	filler-data-2
-999	999	999	filler-data	filler-data-2
-998	998	998	filler-data	filler-data-2
-997	997	997	filler-data	filler-data-2
-996	996	996	filler-data	filler-data-2
-995	995	995	filler-data	filler-data-2
-994	994	994	filler-data	filler-data-2
-993	993	993	filler-data	filler-data-2
-992	992	992	filler-data	filler-data-2
-991	991	991	filler-data	filler-data-2
-60	60	60	filler-data	filler-data-2
-54	54	54	filler-data	filler-data-2
-53	53	53	filler-data	filler-data-2
-52	52	52	filler-data	filler-data-2
-51	51	51	filler-data	filler-data-2
-50	50	50	filler-data	filler-data-2
-18	18	18	filler-data	filler-data-2
-14	14	14	filler-data	filler-data-2
-13	13	13	filler-data	filler-data-2
-12	12	12	filler-data	filler-data-2
-11	11	11	filler-data	filler-data-2
-4	4	4	filler-data	filler-data-2
-3	3	3	filler-data	filler-data-2
-2	2	2	filler-data	filler-data-2
-1	1	1	filler-data	filler-data-2
-select * from t1 where
-(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
-or key1 < 3 or key1 > @maxv-11;
-pk	key1	key2	filler	filler2
-1000	1000	1000	filler-data	filler-data-2
-999	999	999	filler-data	filler-data-2
-998	998	998	filler-data	filler-data-2
-997	997	997	filler-data	filler-data-2
-996	996	996	filler-data	filler-data-2
-995	995	995	filler-data	filler-data-2
-994	994	994	filler-data	filler-data-2
-993	993	993	filler-data	filler-data-2
-992	992	992	filler-data	filler-data-2
-991	991	991	filler-data	filler-data-2
-990	990	990	filler-data	filler-data-2
-54	54	54	filler-data	filler-data-2
-53	53	53	filler-data	filler-data-2
-52	52	52	filler-data	filler-data-2
-51	51	51	filler-data	filler-data-2
-50	50	50	filler-data	filler-data-2
-14	14	14	filler-data	filler-data-2
-13	13	13	filler-data	filler-data-2
-12	12	12	filler-data	filler-data-2
-11	11	11	filler-data	filler-data-2
-4	4	4	filler-data	filler-data-2
-3	3	3	filler-data	filler-data-2
-2	2	2	filler-data	filler-data-2
-1	1	1	filler-data	filler-data-2
-select * from t1 where
-(pk < 5) or (pk > 10 and pk < 15) or (pk >= 50 and pk < 55 ) or (pk > @maxv-10)
-or
-(key1 < 5) or (key1 > 10 and key1 < 15) or (key1 >= 50 and key1 < 55 ) or (key1 > @maxv-10);
-pk	key1	key2	filler	filler2
-1000	1000	1000	filler-data	filler-data-2
-999	999	999	filler-data	filler-data-2
-998	998	998	filler-data	filler-data-2
-997	997	997	filler-data	filler-data-2
-996	996	996	filler-data	filler-data-2
-995	995	995	filler-data	filler-data-2
-994	994	994	filler-data	filler-data-2
-993	993	993	filler-data	filler-data-2
-992	992	992	filler-data	filler-data-2
-991	991	991	filler-data	filler-data-2
-54	54	54	filler-data	filler-data-2
-53	53	53	filler-data	filler-data-2
-52	52	52	filler-data	filler-data-2
-51	51	51	filler-data	filler-data-2
-50	50	50	filler-data	filler-data-2
-14	14	14	filler-data	filler-data-2
-13	13	13	filler-data	filler-data-2
-12	12	12	filler-data	filler-data-2
-11	11	11	filler-data	filler-data-2
-4	4	4	filler-data	filler-data-2
-3	3	3	filler-data	filler-data-2
-2	2	2	filler-data	filler-data-2
-1	1	1	filler-data	filler-data-2
-select * from t1 where
-(pk > 10 and pk < 15) or (pk >= 50 and pk < 55 )
-or
-(key1 < 5) or (key1 > @maxv-10);
-pk	key1	key2	filler	filler2
-1000	1000	1000	filler-data	filler-data-2
-999	999	999	filler-data	filler-data-2
-998	998	998	filler-data	filler-data-2
-997	997	997	filler-data	filler-data-2
-996	996	996	filler-data	filler-data-2
-995	995	995	filler-data	filler-data-2
-994	994	994	filler-data	filler-data-2
-993	993	993	filler-data	filler-data-2
-992	992	992	filler-data	filler-data-2
-991	991	991	filler-data	filler-data-2
-54	54	54	filler-data	filler-data-2
-53	53	53	filler-data	filler-data-2
-52	52	52	filler-data	filler-data-2
-51	51	51	filler-data	filler-data-2
-50	50	50	filler-data	filler-data-2
-14	14	14	filler-data	filler-data-2
-13	13	13	filler-data	filler-data-2
-12	12	12	filler-data	filler-data-2
-11	11	11	filler-data	filler-data-2
-4	4	4	filler-data	filler-data-2
-3	3	3	filler-data	filler-data-2
-2	2	2	filler-data	filler-data-2
-1	1	1	filler-data	filler-data-2
-drop table t1;
-#---------------- Clustered PK ROR-index_merge tests -----------------------------
-SET SESSION STORAGE_ENGINE = MyISAM;
-drop table if exists  t1;
-create table t1
-(
-pk1 int not null,
-pk2 int not null,
-key1 int not null,
-key2 int not null,
-pktail1ok  int not null,
-pktail2ok  int not null,
-pktail3bad int not null,
-pktail4bad int not null,
-pktail5bad int not null,
-pk2copy int not null,
-badkey  int not null,
-filler1 char (200),
-filler2 char (200),
-key (key1),
-key (key2),
-/* keys with tails from CPK members */
-key (pktail1ok, pk1),
-key (pktail2ok, pk1, pk2),
-key (pktail3bad, pk2, pk1),
-key (pktail4bad, pk1, pk2copy),
-key (pktail5bad, pk1, pk2, pk2copy),
-primary key (pk1, pk2)
-);
-explain select * from t1 where pk1 = 1 and pk2 < 80  and key1=0;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	PRIMARY,key1	PRIMARY	8	NULL	7	Using index condition; Using where
-select * from t1 where pk1 = 1 and pk2 < 80  and key1=0;
-pk1	pk2	key1	key2	pktail1ok	pktail2ok	pktail3bad	pktail4bad	pktail5bad	pk2copy	badkey	filler1	filler2
-1	10	0	0	0	0	0	0	0	10	0	filler-data-10	filler2
-1	11	0	0	0	0	0	0	0	11	0	filler-data-11	filler2
-1	12	0	0	0	0	0	0	0	12	0	filler-data-12	filler2
-1	13	0	0	0	0	0	0	0	13	0	filler-data-13	filler2
-1	14	0	0	0	0	0	0	0	14	0	filler-data-14	filler2
-1	15	0	0	0	0	0	0	0	15	0	filler-data-15	filler2
-1	16	0	0	0	0	0	0	0	16	0	filler-data-16	filler2
-1	17	0	0	0	0	0	0	0	17	0	filler-data-17	filler2
-1	18	0	0	0	0	0	0	0	18	0	filler-data-18	filler2
-1	19	0	0	0	0	0	0	0	19	0	filler-data-19	filler2
-explain select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	key1,key2	4,4	NULL	1	Using intersect(key1,key2); Using where
-select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
-pk1	pk2
-95	59
-95	58
-95	57
-95	56
-95	55
-95	54
-95	53
-95	52
-95	51
-95	50
-explain select * from t1 where badkey=1 and key1=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	key1	key1	4	const	91	Using where
-set @tmp_index_merge_ror_cpk=@@optimizer_switch;
-set optimizer_switch='extended_keys=off';
-explain select * from t1 where pk1 < 7500 and key1 = 10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	PRIMARY,key1	key1	4	const	ROWS	Using where
-set optimizer_switch=@tmp_index_merge_ror_cpk;
-explain select * from t1 where pktail1ok=1 and key1=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	key1,pktail1ok	pktail1ok	4	const	76	Using where
-explain select * from t1 where pktail2ok=1 and key1=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	key1,pktail2ok	pktail2ok	4	const	82	Using where
-explain select * from t1 where (pktail2ok=1 and pk1< 50000) or key1=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	PRIMARY,key1,pktail2ok	pktail2ok,key1	8,4	NULL	173	Using sort_union(pktail2ok,key1); Using where
-explain select * from t1 where pktail3bad=1 and key1=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	key1,pktail3bad	pktail3bad	4	const	73	Using where
-explain select * from t1 where pktail4bad=1 and key1=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	key1,pktail4bad	pktail4bad	4	const	82	Using where
-explain select * from t1 where pktail5bad=1 and key1=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	key1,pktail5bad	pktail5bad	4	const	70	Using where
-explain select pk1,pk2,key1,key2 from t1 where key1 = 10 and key2=10 limit 10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	key1,key2	4,4	NULL	1	Using intersect(key1,key2); Using where
-select pk1,pk2,key1,key2 from t1 where key1 = 10 and key2=10 limit 10;
-pk1	pk2	key1	key2
-104	49	10	10
-104	48	10	10
-104	47	10	10
-104	46	10	10
-104	45	10	10
-104	44	10	10
-104	43	10	10
-104	42	10	10
-104	41	10	10
-104	40	10	10
-drop table t1;
-create table t1
-(
-RUNID varchar(22),
-SUBMITNR varchar(5),
-ORDERNR char(1),
-PROGRAMM varchar(8),
-TESTID varchar(4),
-UCCHECK char(1),
-ETEXT varchar(80),
-ETEXT_TYPE char(1),
-INFO char(1),
-SEVERITY tinyint(3),
-TADIRFLAG char(1),
-PRIMARY KEY  (RUNID,SUBMITNR,ORDERNR,PROGRAMM,TESTID,UCCHECK),
-KEY `TVERM~KEY`  (PROGRAMM,TESTID,UCCHECK)
-) DEFAULT CHARSET=latin1;
-update t1 set `ETEXT` = '', `ETEXT_TYPE`='', `INFO`='', `SEVERITY`='', `TADIRFLAG`=''
-WHERE
-`RUNID`= '' AND `SUBMITNR`= '' AND `ORDERNR`='' AND `PROGRAMM`='' AND
-`TESTID`='' AND `UCCHECK`='';
-drop table t1;
-#
-# Bug#50402 Optimizer producing wrong results when using Index Merge on InnoDB
-#
-CREATE TABLE t1 (f1 INT, PRIMARY KEY (f1));
-INSERT INTO t1 VALUES (2);
-CREATE TABLE t2 (f1 INT, f2 INT, f3 char(1),
-PRIMARY KEY (f1), KEY (f2), KEY (f3) );
-INSERT INTO t2 VALUES (1, 1, 'h'), (2, 3, 'h'), (3, 2, ''), (4, 2, '');
-SELECT t1.f1 FROM t1
-WHERE (SELECT COUNT(*) FROM t2 WHERE t2.f3 = 'h' AND t2.f2 = t1.f1) = 0 AND t1.f1 = 2;
-f1
-2
-EXPLAIN SELECT t1.f1 FROM t1
-WHERE (SELECT COUNT(*) FROM t2 WHERE t2.f3 = 'h' AND t2.f2 = t1.f1) = 0 AND t1.f1 = 2;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	t1	system	PRIMARY	NULL	NULL	NULL	1	
-2	SUBQUERY	t2	ref	f2,f3	f2	5	const	1	Using where
-DROP TABLE t1,t2;
-create table t0 (a int);
-insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
-create table t1 (a int, b int, c int, filler char(100), 
-key(a), key(b), key(c));
-insert into t1 select 
-A.a * B.a*10 + C.a*100, 
-A.a * B.a*10 + C.a*100,
-A.a, 
-'filler'
-from t0 A, t0 B, t0 C;
-This should use union:
-explain select * from t1 where a=1 or b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b	a,b	5,5	NULL	2	Using union(a,b); Using where
-This should use ALL:
-set optimizer_switch='default,index_merge=off';
-explain select * from t1 where a=1 or b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	a,b	NULL	NULL	NULL	1000	Using where
-This should use sort-union:
-set optimizer_switch='default,index_merge_union=off';
-explain select * from t1 where a=1 or b=1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b	a,b	5,5	NULL	2	Using sort_union(a,b); Using where
-This will use sort-union:
-set optimizer_switch=default;
-explain select * from t1 where a<1 or b <1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b	a,b	5,5	NULL	38	Using sort_union(a,b); Using where
-This should use ALL:
-set optimizer_switch='default,index_merge_sort_union=off';
-explain select * from t1 where a<1 or b <1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	a,b	NULL	NULL	NULL	1000	Using where
-This should use ALL:
-set optimizer_switch='default,index_merge=off';
-explain select * from t1 where a<1 or b <1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	a,b	NULL	NULL	NULL	1000	Using where
-This will use sort-union:
-set optimizer_switch='default,index_merge_union=off';
-explain select * from t1 where a<1 or b <1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b	a,b	5,5	NULL	38	Using sort_union(a,b); Using where
-alter table t1 add d int, add key(d);
-update t1 set d=a;
-This will use sort_union:
-set optimizer_switch=default;
-explain select * from t1 where (a=3 or b in (1,2)) and (c=3 or d=4);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b,c,d	a,b	5,5	NULL	3	Using sort_union(a,b); Using where
-And if we disable sort_union, union:
-set optimizer_switch='default,index_merge_sort_union=off';
-explain select * from t1 where (a=3 or b in (1,2)) and (c=3 or d=4);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b,c,d	c,d	5,5	NULL	100	Using union(c,d); Using where
-drop table t1;
-create table t1 (
-a int, b int, c int,
-filler1 char(200), filler2 char(200), 
-key(a),key(b),key(c)
-);
-insert into t1 
-select A.a+10*B.a, A.a+10*B.a, A.a+10*B.a+100*C.a, 'foo', 'bar' 
-from t0 A, t0 B, t0 C, t0 D where D.a<5;
-This should be intersect:
-set optimizer_switch=default;
-explain select * from t1 where a=10 and b=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b	a,b	5,5	NULL	1	Using intersect(a,b); Using where
-No intersect when index_merge is disabled:
-set optimizer_switch='default,index_merge=off';
-explain select * from t1 where a=10 and b=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	a,b	a	5	const	49	Using where
-No intersect if it is disabled:
-set optimizer_switch='default,index_merge_sort_intersection=off,index_merge_intersection=off';
-explain select * from t1 where a=10 and b=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	a,b	a	5	const	49	Using where
-Do intersect when union was disabled
-set optimizer_switch='default,index_merge_union=off';
-explain select * from t1 where a=10 and b=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b	a,b	5,5	NULL	1	Using intersect(a,b); Using where
-Do intersect when sort_union was disabled
-set optimizer_switch='default,index_merge_sort_union=off';
-explain select * from t1 where a=10 and b=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b	a,b	5,5	NULL	1	Using intersect(a,b); Using where
-This will use intersection inside a union:
-set optimizer_switch=default;
-explain select * from t1 where a=10 and b=10 or c=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b,c	a,b,c	5,5,5	NULL	6	Using union(intersect(a,b),c); Using where
-Should be only union left:
-set optimizer_switch='default,index_merge_intersection=off';
-explain select * from t1 where a=10 and b=10 or c=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b,c	a,c	5,5	NULL	54	Using union(a,c); Using where
-This will switch to sort-union (intersection will be gone, too,
-that's a known limitation:
-set optimizer_switch='default,index_merge_union=off';
-explain select * from t1 where a=10 and b=10 or c=10;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	a,b,c	a,c	5,5	NULL	54	Using sort_union(a,c); Using where
-set optimizer_switch=default;
-drop table t0, t1;
-#
-# BUG#834514 Assertion `!table || (!table->read_set || bitmap_is_set(...' with aggregates
-#
-CREATE TABLE t1 ( a int , b int, c int, KEY (b), PRIMARY KEY (a)) ;
-INSERT INTO t1 VALUES (1,4,0),(5,0,0),(6,7,0),(7,7,0),(8,1,0),(9,7,0),(10,1,0);
-CREATE TABLE t2 ( b int, c int, KEY (c,b)) ;
-INSERT INTO t2 VALUES (7,0),(1,0),(7,0),(1,0);
-CREATE TABLE t3 ( a int ) ;
-SELECT COUNT(DISTINCT t2.b), CONCAT(t1.c)
-FROM t1, t2
-WHERE (t2.c = t1.c)
-AND (
-t1.b IN ( 4 )
-OR t1.a = 137
-AND EXISTS ( SELECT a FROM t3 )
-)
-GROUP BY 2;
-COUNT(DISTINCT t2.b)	CONCAT(t1.c)
-2	0
-DROP TABLE t1,t2,t3;
-#
-# MDEV-4556 Server crashes in SEL_ARG::rb_insert with index_merge+index_merge_sort_union, FORCE INDEX
-#
-CREATE TABLE t1 (
-pk int,
-code char(2),
-population_rate int,
-area_rate int,
-primary key (pk),
-index (code),
-key (population_rate),
-key (area_rate)
-);
-INSERT INTO t1 VALUES  (1,'WI',20, 23), (2, 'WA', 13, 18);
-EXPLAIN
-SELECT * FROM t1 FORCE INDEX ( PRIMARY, population_rate, area_rate, code ) 
-WHERE pk = 1 OR population_rate = 1 OR ( area_rate IN ( 1,2 ) OR area_rate IS NULL )
-AND (population_rate = 25 OR area_rate BETWEEN 2 AND 25 OR code BETWEEN 'MA' AND 'TX');
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	PRIMARY,code,population_rate,area_rate	PRIMARY,population_rate,area_rate	4,5,5	NULL	2	Using sort_union(PRIMARY,population_rate,area_rate); Using where
-SELECT * FROM t1 FORCE INDEX ( PRIMARY, population_rate, area_rate, code ) 
-WHERE pk = 1 OR population_rate = 1 OR ( area_rate IN ( 1,2 ) OR area_rate IS NULL )
-AND (population_rate = 25 OR area_rate BETWEEN 2 AND 25 OR code BETWEEN 'MA' AND 'TX');
-pk	code	population_rate	area_rate
-1	WI	20	23
-DROP TABLE t1;
-#
-# MDEV-5069: Server crashes in SEL_ARG::increment_use_count with index_merge+index_merge_sort_union, FORCE INDEX
-#
-CREATE TABLE t1 (
-c1 varchar(64),
-i int,
-pk integer auto_increment,
-c2 varchar(64),
-index (c1),
-index (i),
-primary key (pk),
-key (c2)) ENGINE=myisam;
-ALTER TABLE t1 DISABLE KEYS;
-INSERT INTO t1 VALUES 
-('West Virginia', 6121, NULL, 'California'),('Georgia', 60177, NULL, 'Arkansas'),
-('Delaware', 90, NULL, 'Oregon'),('Wyoming', 7, NULL, 'Missouri'),(
-'Delaware', 2, NULL, 'Utah'),('Wisconsin', 0, NULL, 'Iowa'),
-('Kansas', 0, NULL, 'Florida'),('Ohio', 34358, NULL, 'Colorado'),
-('Maine', 118, NULL, 'Texas'),('Mississippi', 0, NULL, 'Georgia'),
-('Tennessee', 4, NULL, 'N/A'),('Georgia', 0, NULL, 'New Hampshire'),
-('Wyoming', 2, NULL, 'N/A'),('Florida', 0, NULL, 'Arizona'),
-('Rhode Island', -24002, NULL, 'Michigan'),('Alabama', 142, NULL, 'Indiana'),
-('Colorado', 0, NULL, 'Louisiana'),('Michigan', 21194, NULL, 'Louisiana'),
-('Oklahoma', 31475, NULL, 'Alabama'),('Pennsylvania', 0, NULL, 'Oklahoma'),
-('Texas', 0, NULL, 'Texas'),('West Virginia', 5, NULL, 'Utah'),
-('Florida', 49653, NULL, 'Kentucky'),('Tennessee', 19075, NULL, 'Oregon'),
-('Maine', 3, NULL, 'Kansas, Kentucky, Iowa'),('Iowa', 1, NULL, 'South Dakota'),
-('Kansas', -4037, NULL, 'Virginia'),('Delaware', 22550, NULL, 'Utah'),
-('Illinois', 14634, NULL, 'South Carolina, Colorado'),
-('Kansas', 6, NULL, 'South Dakota'),('Delaware', 9, NULL, ''),
-('', 0, NULL, 'Utah, Delaware, Florida, Georgia, Nevada'),
-('Colorado', 8, NULL, 'Montana'),('Maryland', 2689, NULL, 'Hawaii'),
-('Florida', -12306, NULL, 'Delaware'),
-('Indiana', 38567, NULL, 'Iowa, Minnesota, Maine'),
-('Oklahoma', 9, NULL, 'Delaware, Kansas, Oregon, Nebraska, Maryland, Minnesota'),
-('Tennessee', 12460, NULL, NULL),('Kentucky', 0, NULL, 'Ohio'),
-('Nevada', 7, NULL, 'Vermont, Oregon, Oklahoma, Montana'),
-('Nebraska', 61966, NULL, 'Nevada'),('Alaska', 131, NULL, 'Louisiana, Maine'),
-('Wisconsin', 4, NULL, 'Nevada'),('South Carolina', 0, NULL, 'Washington'),
-('West Virginia', 51314, NULL, 'Ohio'),('Louisiana', 0, NULL, ''),
-('Pennsylvania', 0, NULL, 'Iowa, Idaho'),('Arkansas', 14010, NULL, 'Indiana'),
-('Wyoming', -15514, NULL, 'Maine'),('Georgia', 0, NULL, 'N/A'),
-('Kentucky', 1, NULL, 'Idaho'),('Wyoming', 60249, NULL, 'Indiana, Iowa'),
-('Pennsylvania', 69, NULL, 'W'),
-('New Mexico', 11480, NULL, 'Florida, Georgia, Hawaii'),
-('South Carolina', 9, NULL, 'Iowa'),('Virginia', 0, NULL, 'Connecticut'),
-('Mississippi', 19749, NULL, 'Rhode Island'),('Illinois', 5, NULL, 'Virginia'),
-('Texas', -1749, NULL, 'Tennessee'),('Arizona', 28, NULL, 'California'),
-('Florida', 62151, NULL, 'Kansas'),('California', 172, NULL, 'SC'),
-('New Jersey', 0, NULL, 'North Carolina'),('Wyoming', 4, NULL, 'I'),
-('Kansas', 10683, NULL, 'California'),('Arkansas', -14275, NULL, 'K'),
-('Arizona', 5, NULL, 'California, Delaware, Rhode Island, Maryland'),
-('Florida', 0, NULL, 'T'),('Alaska', 241, NULL, 'Virginia');
-ALTER TABLE t1 ENABLE KEYS;
-EXPLAIN
-SELECT  * FROM t1 FORCE KEY (PRIMARY , i , c1 , c2) 
-WHERE pk = 255 OR i = 22 OR (pk  IN (1 , 136) AND c2  IN ('c' , 'w') AND (c1 NOT BETWEEN 'e' AND 'i' OR  c2 > 'g'))  OR pk != 1  ;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	PRIMARY,c1,i,c2	NULL	NULL	NULL	69	Using where
-DROP TABLE t1;
-set optimizer_switch= @optimizer_switch_save;