drop table if exists t1,t2,t3,t4; set @save_storage_engine= @@storage_engine; set storage_engine=aria; create table t1(a int); show create table t1; Table Create Table t1 CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL ) ENGINE=Aria DEFAULT CHARSET=latin1 PAGE_CHECKSUM=1 insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); create table t2(a int); insert into t2 select A.a + 10*(B.a + 10*C.a) from t1 A, t1 B, t1 C; create table t3 ( a char(8) not null, b char(8) not null, filler char(200), key(a) ); insert into t3 select @a:=concat('c-', 1000+ A.a, '=w'), @a, 'filler' from t2 A; insert into t3 select concat('c-', 1000+A.a, '=w'), concat('c-', 2000+A.a, '=w'), 'filler-1' from t2 A; insert into t3 select concat('c-', 1000+A.a, '=w'), concat('c-', 3000+A.a, '=w'), 'filler-2' from t2 A; select a,filler from t3 where a >= 'c-9011=w'; a filler select a,filler from t3 where a >= 'c-1011=w' and a <= 'c-1015=w'; a filler c-1011=w filler c-1012=w filler c-1013=w filler c-1014=w filler c-1015=w filler c-1011=w filler-1 c-1012=w filler-1 c-1013=w filler-1 c-1014=w filler-1 c-1015=w filler-1 c-1011=w filler-2 c-1012=w filler-2 c-1013=w filler-2 c-1014=w filler-2 c-1015=w filler-2 select a,filler from t3 where (a>='c-1011=w' and a <= 'c-1013=w') or (a>='c-1014=w' and a <= 'c-1015=w'); a filler c-1011=w filler c-1012=w filler c-1013=w filler c-1014=w filler c-1015=w filler c-1011=w filler-1 c-1012=w filler-1 c-1013=w filler-1 c-1014=w filler-1 c-1015=w filler-1 c-1011=w filler-2 c-1012=w filler-2 c-1013=w filler-2 c-1014=w filler-2 c-1015=w filler-2 insert into t3 values ('c-1013=z', 'c-1013=z', 'err'); insert into t3 values ('a-1014=w', 'a-1014=w', 'err'); select a,filler from t3 where (a>='c-1011=w' and a <= 'c-1013=w') or (a>='c-1014=w' and a <= 'c-1015=w'); a filler c-1011=w filler c-1012=w filler c-1013=w filler c-1014=w filler c-1015=w filler c-1011=w filler-1 c-1012=w filler-1 c-1013=w filler-1 c-1014=w filler-1 c-1015=w filler-1 c-1011=w filler-2 c-1012=w filler-2 c-1013=w filler-2 c-1014=w filler-2 c-1015=w filler-2 delete from t3 where b in ('c-1013=z', 'a-1014=w'); select a,filler from t3 where a='c-1011=w' or a='c-1012=w' or a='c-1013=w' or a='c-1014=w' or a='c-1015=w'; a filler c-1011=w filler c-1012=w filler c-1013=w filler c-1014=w filler c-1015=w filler c-1011=w filler-1 c-1012=w filler-1 c-1013=w filler-1 c-1014=w filler-1 c-1015=w filler-1 c-1011=w filler-2 c-1012=w filler-2 c-1013=w filler-2 c-1014=w filler-2 c-1015=w filler-2 insert into t3 values ('c-1013=w', 'del-me', 'inserted'); select a,filler from t3 where a='c-1011=w' or a='c-1012=w' or a='c-1013=w' or a='c-1014=w' or a='c-1015=w'; a filler c-1011=w filler c-1012=w filler c-1013=w filler c-1014=w filler c-1015=w filler c-1011=w filler-1 c-1012=w filler-1 c-1013=w filler-1 c-1014=w filler-1 c-1015=w filler-1 c-1011=w filler-2 c-1012=w filler-2 c-1013=w filler-2 c-1014=w filler-2 c-1015=w filler-2 c-1013=w inserted delete from t3 where b='del-me'; alter table t3 add primary key(b); select b,filler from t3 where (b>='c-1011=w' and b<= 'c-1018=w') or b IN ('c-1019=w', 'c-1020=w', 'c-1021=w', 'c-1022=w', 'c-1023=w', 'c-1024=w'); b filler c-1011=w filler c-1012=w filler c-1013=w filler c-1014=w filler c-1015=w filler c-1016=w filler c-1017=w filler c-1018=w filler c-1019=w filler c-1020=w filler c-1021=w filler c-1022=w filler c-1023=w filler c-1024=w filler select b,filler from t3 where (b>='c-1011=w' and b<= 'c-1020=w') or b IN ('c-1021=w', 'c-1022=w', 'c-1023=w'); b filler c-1011=w filler c-1012=w filler c-1013=w filler c-1014=w filler c-1015=w filler c-1016=w filler c-1017=w filler c-1018=w filler c-1019=w filler c-1020=w filler c-1021=w filler c-1022=w filler c-1023=w filler select b,filler from t3 where (b>='c-1011=w' and b<= 'c-1018=w') or b IN ('c-1019=w', 'c-1020=w') or (b>='c-1021=w' and b<= 'c-1023=w'); b filler c-1011=w filler c-1012=w filler c-1013=w filler c-1014=w filler c-1015=w filler c-1016=w filler c-1017=w filler c-1018=w filler c-1019=w filler c-1020=w filler c-1021=w filler c-1022=w filler c-1023=w filler create table t4 (a varchar(10), b int, c char(10), filler char(200), key idx1 (a, b, c)); insert into t4 (filler) select concat('NULL-', 15-a) from t2 order by a limit 15; insert into t4 (a,b,c,filler) select 'b-1',NULL,'c-1', concat('NULL-', 15-a) from t2 order by a limit 15; insert into t4 (a,b,c,filler) select 'b-1',NULL,'c-222', concat('NULL-', 15-a) from t2 order by a limit 15; insert into t4 (a,b,c,filler) select 'bb-1',NULL,'cc-2', concat('NULL-', 15-a) from t2 order by a limit 15; insert into t4 (a,b,c,filler) select 'zz-1',NULL,'cc-2', 'filler-data' from t2 order by a limit 500; explain select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1' or c='no-such-row2'); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 range idx1 idx1 29 NULL 16 Using index condition; Using MRR select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1' or c='no-such-row2'); a b c filler NULL NULL NULL NULL-15 NULL NULL NULL NULL-14 NULL NULL NULL NULL-13 NULL NULL NULL NULL-12 NULL NULL NULL NULL-11 NULL NULL NULL NULL-10 NULL NULL NULL NULL-9 NULL NULL NULL NULL-8 NULL NULL NULL NULL-7 NULL NULL NULL NULL-6 NULL NULL NULL NULL-5 NULL NULL NULL NULL-4 NULL NULL NULL NULL-3 NULL NULL NULL NULL-2 NULL NULL NULL NULL-1 explain select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2'); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 range idx1 idx1 29 NULL 32 Using index condition; Using MRR select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2'); a b c filler b-1 NULL c-1 NULL-15 b-1 NULL c-1 NULL-14 b-1 NULL c-1 NULL-13 b-1 NULL c-1 NULL-12 b-1 NULL c-1 NULL-11 b-1 NULL c-1 NULL-10 b-1 NULL c-1 NULL-9 b-1 NULL c-1 NULL-8 b-1 NULL c-1 NULL-7 b-1 NULL c-1 NULL-6 b-1 NULL c-1 NULL-5 b-1 NULL c-1 NULL-4 b-1 NULL c-1 NULL-3 b-1 NULL c-1 NULL-2 b-1 NULL c-1 NULL-1 bb-1 NULL cc-2 NULL-15 bb-1 NULL cc-2 NULL-14 bb-1 NULL cc-2 NULL-13 bb-1 NULL cc-2 NULL-12 bb-1 NULL cc-2 NULL-11 bb-1 NULL cc-2 NULL-10 bb-1 NULL cc-2 NULL-9 bb-1 NULL cc-2 NULL-8 bb-1 NULL cc-2 NULL-7 bb-1 NULL cc-2 NULL-6 bb-1 NULL cc-2 NULL-5 bb-1 NULL cc-2 NULL-4 bb-1 NULL cc-2 NULL-3 bb-1 NULL cc-2 NULL-2 bb-1 NULL cc-2 NULL-1 select * from t4 ignore index(idx1) where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2'); a b c filler b-1 NULL c-1 NULL-15 b-1 NULL c-1 NULL-14 b-1 NULL c-1 NULL-13 b-1 NULL c-1 NULL-12 b-1 NULL c-1 NULL-11 b-1 NULL c-1 NULL-10 b-1 NULL c-1 NULL-9 b-1 NULL c-1 NULL-8 b-1 NULL c-1 NULL-7 b-1 NULL c-1 NULL-6 b-1 NULL c-1 NULL-5 b-1 NULL c-1 NULL-4 b-1 NULL c-1 NULL-3 b-1 NULL c-1 NULL-2 b-1 NULL c-1 NULL-1 bb-1 NULL cc-2 NULL-15 bb-1 NULL cc-2 NULL-14 bb-1 NULL cc-2 NULL-13 bb-1 NULL cc-2 NULL-12 bb-1 NULL cc-2 NULL-11 bb-1 NULL cc-2 NULL-10 bb-1 NULL cc-2 NULL-9 bb-1 NULL cc-2 NULL-8 bb-1 NULL cc-2 NULL-7 bb-1 NULL cc-2 NULL-6 bb-1 NULL cc-2 NULL-5 bb-1 NULL cc-2 NULL-4 bb-1 NULL cc-2 NULL-3 bb-1 NULL cc-2 NULL-2 bb-1 NULL cc-2 NULL-1 drop table t1, t2, t3, t4; create table t1 (a int, b int not null,unique key (a,b),index(b)); insert ignore into t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(null,7),(9,9),(8,8),(7,7),(null,9),(null,9),(6,6); create table t2 like t1; insert into t2 select * from t1; alter table t1 modify b blob not null, add c int not null, drop key a, add unique key (a,b(20),c), drop key b, add key (b(10)); select * from t1 where a is null; a b c NULL 7 0 NULL 9 0 NULL 9 0 select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3; a b c NULL 9 0 NULL 9 0 select * from t1 where a is null and b=9 or a is null and b=7 limit 3; a b c NULL 7 0 NULL 9 0 NULL 9 0 drop table t1, t2; set storage_engine= @save_storage_engine; CREATE TABLE t1( pk int NOT NULL, i int NOT NULL, v varchar(1) NOT NULL, PRIMARY KEY (pk), INDEX idx (v, i) ) ENGINE=ARIA; INSERT INTO t1 VALUES (1,9,'x'), (2,5,'g'), (3,1,'o'), (4,0,'g'), (5,1,'v'), (6,190,'m'), (7,6,'x'), (8,3,'c'), (9,4,'z'), (10,3,'i'), (11,186,'x'), (12,1,'g'), (13,8,'q'), (14,226,'m'), (15,133,'p'); CREATE TABLE t2( pk int NOT NULL, i int NOT NULL, v varchar(1) NOT NULL, PRIMARY KEY (pk), INDEX idx (v, i) ) ENGINE=ARIA; INSERT INTO t2 SELECT * FROM t1; INSERT INTO t2 VALUES (77, 333, 'z'); CREATE TABLE t3( pk int NOT NULL, i int NOT NULL, v varchar(1) NOT NULL, PRIMARY KEY (pk), INDEX idx (v, i) ) ENGINE=ARIA; INSERT INTO t3 SELECT * FROM t1; INSERT INTO t3 VALUES (88, 442, 'y'), (99, 445, 'w') ; SELECT COUNT(t1.v) FROM t1, t2 IGNORE INDEX (idx), t3 IGNORE INDEX (idx) WHERE t3.v = t2.v AND t3.i < t2.i AND t3.pk > 0 AND t2.pk > 0; COUNT(t1.v) 120 EXPLAIN SELECT COUNT(t1.v) FROM t1, t2 IGNORE INDEX (idx), t3 IGNORE INDEX (idx) WHERE t3.v = t2.v AND t3.i < t2.i AND t3.pk > 0 AND t2.pk > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL idx 7 NULL 15 Using index 1 SIMPLE t2 ALL PRIMARY NULL NULL NULL 16 Using where; Using join buffer 1 SIMPLE t3 ALL PRIMARY NULL NULL NULL 17 Using where; Using join buffer SELECT COUNT(t1.v) FROM t1, t2, t3 WHERE t3.v = t2.v AND t3.i < t2.i AND t3.pk > 0 AND t2.pk > 0; COUNT(t1.v) 120 EXPLAIN SELECT COUNT(t1.v) FROM t1, t2, t3 WHERE t3.v = t2.v AND t3.i < t2.i AND t3.pk > 0 AND t2.pk > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL idx 7 NULL 15 Using index 1 SIMPLE t2 ALL PRIMARY,idx NULL NULL NULL 16 Using where; Using join buffer 1 SIMPLE t3 ref PRIMARY,idx idx 3 test.t2.v 2 Using index condition; Using where DROP TABLE t1,t2,t3; # # Bug #669420: MRR for Range checked for each record # CREATE TABLE t1 ( pk int NOT NULL PRIMARY KEY, j int NOT NULL, i int NOT NULL, v varchar(1) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL, INDEX i (i), INDEX vi (v,i) ) ENGINE=ARIA; INSERT INTO t1 VALUES (10,3,8,'v'),(11,3,8,'f'); CREATE TABLE t2 ( pk int NOT NULL PRIMARY KEY, j int NOT NULL, i int NOT NULL, v varchar(1) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL, INDEX i (i), INDEX vi (v,i) ) ENGINE=ARIA; INSERT INTO t2 VALUES (10,9,3,'i'),(11,101,186,'x'),(12,0,1,'g'); SET SESSION join_cache_level=0; EXPLAIN SELECT t1.i, t2.i, t2.v, t3.pk, t3.v FROM t1, t2, t2 t3 WHERE t2.i != 0 AND t3.pk >= t2.i AND t3.v >= t2.v; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL i 4 NULL 2 Using index 1 SIMPLE t2 index i,vi vi 7 NULL 3 Using where; Using index 1 SIMPLE t3 ALL PRIMARY,vi NULL NULL NULL 3 Range checked for each record (index map: 0x5) SELECT t1.i, t2.i, t2.v, t3.pk, t3.v FROM t1, t2, t2 t3 WHERE t2.i != 0 AND t3.pk >= t2.i AND t3.v >= t2.v; i i v pk v 8 1 g 10 i 8 1 g 11 x 8 1 g 12 g 8 3 i 10 i 8 3 i 11 x 8 1 g 10 i 8 1 g 11 x 8 1 g 12 g 8 3 i 10 i 8 3 i 11 x SET SESSION join_cache_level=1; EXPLAIN SELECT t1.i, t2.i, t2.v, t3.pk, t3.v FROM t1, t2, t2 t3 WHERE t2.i != 0 AND t3.pk >= t2.i AND t3.v >= t2.v; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index NULL i 4 NULL 2 Using index 1 SIMPLE t2 index i,vi vi 7 NULL 3 Using where; Using index; Using join buffer 1 SIMPLE t3 ALL PRIMARY,vi NULL NULL NULL 3 Range checked for each record (index map: 0x5) SELECT t1.i, t2.i, t2.v, t3.pk, t3.v FROM t1, t2, t2 t3 WHERE t2.i != 0 AND t3.pk >= t2.i AND t3.v >= t2.v; i i v pk v 8 3 i 10 i 8 3 i 11 x 8 3 i 10 i 8 3 i 11 x 8 1 g 10 i 8 1 g 11 x 8 1 g 12 g 8 1 g 10 i 8 1 g 11 x 8 1 g 12 g SET SESSION join_cache_level=DEFAULT; DROP TABLE t1,t2; CREATE TABLE t1 ( pk int NOT NULL PRIMARY KEY, j int NOT NULL, i int NOT NULL, v varchar(1) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL, INDEX i (i) ) ENGINE=ARIA; INSERT INTO t1 VALUES (10,3,8,'v'),(11,3,8,'f'),(12,3,5,'v'),(13,2,8,'s'),(14,1,8,'a'), (15,0,6,'p'),(16,8,7,'z'),(17,5,2,'a'),(18,9,5,'h'),(19,5,7,'h'), (20,4,2,'v'),(21,2,9,'v'),(22,33,142,'b'),(23,5,3,'y'),(24,1,0,'v'), (25,9,3,'m'),(26,1,5,'z'),(27,3,9,'n'),(28,8,1,'d'),(29,231,107,'a'); SET SESSION join_cache_level = 0; EXPLAIN SELECT s.i f FROM t1 t, t1 s WHERE s.i >= t.i AND s.pk < t.j; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t ALL i NULL NULL NULL 20 1 SIMPLE s ALL PRIMARY,i NULL NULL NULL 20 Range checked for each record (index map: 0x3) SELECT s.i f FROM t1 t, t1 s WHERE s.i >= t.i AND s.pk < t.j; f 142 142 107 EXPLAIN SELECT s.i f FROM t1 t, t1 s WHERE s.i >= t.i AND s.pk < t.j GROUP BY f; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t ALL i NULL NULL NULL 20 Using temporary; Using filesort 1 SIMPLE s ALL PRIMARY,i NULL NULL NULL 20 Range checked for each record (index map: 0x3) SELECT s.i f FROM t1 t, t1 s WHERE s.i >= t.i AND s.pk < t.j GROUP BY f; f 107 142 EXPLAIN SELECT s.i f FROM t1 t, t1 s WHERE s.i >= t.i AND s.pk < t.j GROUP BY f LIMIT 1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE s ALL PRIMARY,i NULL NULL NULL 20 Using temporary; Using filesort 1 SIMPLE t ALL i NULL NULL NULL 20 Using where SELECT s.i f FROM t1 t, t1 s WHERE s.i >= t.i AND s.pk < t.j GROUP BY f LIMIT 1; f 107 SET SESSION join_cache_level=DEFAULT; DROP TABLE t1;