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Edit File: group_min_max_innodb.test

#
# Test file for WL#1724 (Min/Max Optimization for Queries with Group By Clause).
# The queries in this file test query execution via QUICK_GROUP_MIN_MAX_SELECT
# that depends on InnoDB
#

--source include/have_innodb.inc

--disable_warnings
drop view if exists v1;
drop table if exists t1,t4;
--enable_warnings

#
# Bug #12672: primary key implcitly included in every innodb index
#

--disable_warnings
create table t4 (
  pk_col int auto_increment primary key, a1 char(64), a2 char(64), b char(16), c char(16) not null, d char(16), dummy char(64) default ' '
) engine=innodb;
--enable_warnings

insert into t4 (a1, a2, b, c, d) values
('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'),
('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'),
('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'),
('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'),
('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'),
('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'),
('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'),
('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'),
('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'),
('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'),
('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'),
('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'),
('d','a','a','a411','xy1'),('d','a','a','b411','xy2'),('d','a','a','c411','xy3'),('d','a','a','d411','xy4'),
('d','a','b','e412','xy1'),('d','a','b','f412','xy2'),('d','a','b','g412','xy3'),('d','a','b','h412','xy4'),
('d','b','a','i421','xy1'),('d','b','a','j421','xy2'),('d','b','a','k421','xy3'),('d','b','a','l421','xy4'),
('d','b','b','m422','xy1'),('d','b','b','n422','xy2'),('d','b','b','o422','xy3'),('d','b','b','p422','xy4'),
('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'),
('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'),
('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'),
('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'),
('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'),
('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'),
('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'),
('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'),
('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'),
('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'),
('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'),
('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'),
('d','a','a','a411','xy1'),('d','a','a','b411','xy2'),('d','a','a','c411','xy3'),('d','a','a','d411','xy4'),
('d','a','b','e412','xy1'),('d','a','b','f412','xy2'),('d','a','b','g412','xy3'),('d','a','b','h412','xy4'),
('d','b','a','i421','xy1'),('d','b','a','j421','xy2'),('d','b','a','k421','xy3'),('d','b','a','l421','xy4'),
('d','b','b','m422','xy1'),('d','b','b','n422','xy2'),('d','b','b','o422','xy3'),('d','b','b','p422','xy4');

create index idx12672_0 on t4 (a1);
create index idx12672_1 on t4 (a1,a2,b,c);
create index idx12672_2 on t4 (a1,a2,b);
analyze table t4;

select distinct a1 from t4 where pk_col not in (1,2,3,4);

drop table t4;

#
# Bug #6142: a problem with the empty innodb table
#

--disable_warnings
create table t1 (
  a varchar(30), b varchar(30), primary key(a), key(b)
) engine=innodb;
--enable_warnings
select distinct a from t1;
drop table t1;

#
# Bug #9798: group by with rollup
#

--disable_warnings
create table t1(a int, key(a)) engine=innodb;
--enable_warnings
insert into t1 values(1);
select a, count(a) from t1 group by a with rollup;
drop table t1;

#
# Bug #13293 Wrongly used index results in endless loop.
#
create table t1 (f1 int, f2 char(1), primary key(f1,f2)) engine=innodb
stats_persistent=0;
insert into t1 values ( 1,"e"),(2,"a"),( 3,"c"),(4,"d");
alter table t1 drop primary key, add primary key (f2, f1);
explain select distinct f1 a, f1 b from t1;
explain select distinct f1, f2 from t1;
drop table t1;

#
# Bug #36632: Select distinct from a simple view on an InnoDB table
#             returns incorrect results
#
create table t1(pk int primary key) engine=innodb;
create view v1 as select pk from t1 where pk < 20;

insert into t1 values (1), (2), (3), (4);
select distinct pk from v1;

insert into t1 values (5), (6), (7);
select distinct pk from v1;

drop view v1;
drop table t1;

--echo End of 5.1 tests

--echo #
--echo # Bug#12540545 61101: ASSERTION FAILURE IN THREAD 1256741184 IN
--echo # FILE /BUILDDIR/BUILD/BUILD/MYSQ
--echo #

CREATE TABLE t1 (a CHAR(1), b CHAR(1), PRIMARY KEY (a,b)) ENGINE=InnoDB;
INSERT INTO t1 VALUES ('a', 'b'), ('c', 'd');
EXPLAIN SELECT COUNT(DISTINCT a) FROM t1 WHERE b = 'b';
SELECT COUNT(DISTINCT a) FROM t1 WHERE b = 'b';
DROP TABLE t1;

CREATE TABLE t1 (a CHAR(1) NOT NULL, b CHAR(1) NOT NULL, UNIQUE KEY (a,b))
ENGINE=InnoDB;
INSERT INTO t1 VALUES ('a', 'b'), ('c', 'd');
EXPLAIN SELECT COUNT(DISTINCT a) FROM t1 WHERE b = 'b';
SELECT COUNT(DISTINCT a) FROM t1 WHERE b = 'b';
DROP TABLE t1;

--echo End of 5.5 tests

--echo #
--echo # Bug#17909656 - WRONG RESULTS FOR A SIMPLE QUERY WITH GROUP BY
--echo #

CREATE TABLE t0 (
  i1 INTEGER NOT NULL
);

INSERT INTO t0 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),
                      (11),(12),(13),(14),(15),(16),(17),(18),(19),(20),
                      (21),(22),(23),(24),(25),(26),(27),(28),(29),(30);

CREATE TABLE t1 (
  c1 CHAR(1) NOT NULL,
  i1 INTEGER NOT NULL,
  i2 INTEGER NOT NULL,
  UNIQUE KEY k1 (c1,i2)
) ENGINE=InnoDB;

INSERT INTO t1 SELECT 'A',i1,i1 FROM t0;
INSERT INTO t1 SELECT 'B',i1,i1 FROM t0;
INSERT INTO t1 SELECT 'C',i1,i1 FROM t0;
INSERT INTO t1 SELECT 'D',i1,i1 FROM t0;
INSERT INTO t1 SELECT 'E',i1,i1 FROM t0;
INSERT INTO t1 SELECT 'F',i1,i1 FROM t0;
                 
CREATE TABLE t2 (
  c1 CHAR(1) NOT NULL,
  i1 INTEGER NOT NULL,
  i2 INTEGER NOT NULL,
  UNIQUE KEY k2 (c1,i1,i2)
) ENGINE=InnoDB;

INSERT INTO t2 SELECT 'A',i1,i1 FROM t0;
INSERT INTO t2 SELECT 'B',i1,i1 FROM t0;
INSERT INTO t2 SELECT 'C',i1,i1 FROM t0;
INSERT INTO t2 SELECT 'D',i1,i1 FROM t0;
INSERT INTO t2 SELECT 'E',i1,i1 FROM t0;
INSERT INTO t2 SELECT 'F',i1,i1 FROM t0;

-- disable_result_log
ANALYZE TABLE t1;
ANALYZE TABLE t2;
-- enable_result_log

let $DEFAULT_TRACE_MEM_SIZE=1048576; # 1MB
eval set optimizer_trace_max_mem_size=$DEFAULT_TRACE_MEM_SIZE;
set @@session.optimizer_trace='enabled=on';
set end_markers_in_json=on;
let $show_method=
SELECT TRACE RLIKE 'minmax_keypart_in_disjunctive_query'
AS OK FROM INFORMATION_SCHEMA.OPTIMIZER_TRACE;

let query=
SELECT c1, max(i2) FROM t1 WHERE (c1 = 'C' AND i2 = 17) OR ( c1 = 'F')
GROUP BY c1;
--replace_column 10 ROWS
eval EXPLAIN $query;
eval $query;
eval $show_method;

let query=
SELECT c1, max(i2) FROM t1 WHERE (c1 = 'C' OR ( c1 = 'F' AND i2 = 17))
GROUP BY c1;
--replace_column 10 ROWS
eval EXPLAIN $query;
eval $query;
eval $show_method;

let query=
SELECT c1, max(i2) FROM t1 WHERE (c1 = 'C' OR c1 = 'F' ) AND ( i2 = 17 )
GROUP BY c1;
--replace_column 10 ROWS
eval EXPLAIN $query;
eval $query;
eval $show_method;

let query=
SELECT c1, max(i2) FROM t1 
WHERE ((c1 = 'C' AND (i2 = 40 OR i2 = 30)) OR ( c1 = 'F' AND (i2 = 40 )))
GROUP BY c1;
--replace_column 10 ROWS
eval EXPLAIN $query;
eval $query;
eval $show_method;

let query=
SELECT c1, i1, max(i2) FROM t2
WHERE (c1 = 'C' OR ( c1 = 'F' AND i1 < 35)) AND ( i2 = 17 )
GROUP BY c1,i1;
--replace_column 10 ROWS
eval EXPLAIN $query;
eval $query;
eval $show_method;

let query=
SELECT c1, i1, max(i2) FROM t2 
WHERE (((c1 = 'C' AND i1 < 40) OR ( c1 = 'F' AND i1 < 35)) AND ( i2 = 17 ))
GROUP BY c1,i1;
--replace_column 10 ROWS
eval EXPLAIN $query;
eval $query;
eval $show_method;

let query=
SELECT c1, i1, max(i2) FROM t2 
WHERE ((c1 = 'C' AND i1 < 40) OR ( c1 = 'F' AND i1 < 35) OR ( i2 = 17 ))
GROUP BY c1,i1;
--replace_column 10 ROWS
eval EXPLAIN $query;
eval $query;
eval $show_method;

SET optimizer_trace_max_mem_size=DEFAULT;
SET optimizer_trace=DEFAULT;
SET end_markers_in_json=DEFAULT;

DROP TABLE t0,t1,t2;

--echo #
--echo # Bug #21749123: SELECT DISTINCT, WRONG RESULTS COMBINED WITH
--echo #                USE_INDEX_EXTENSIONS=OFF
--echo #

CREATE TABLE t1 (
  pk_col INT AUTO_INCREMENT PRIMARY KEY,
  a1 CHAR(64),
  KEY a1_idx (a1)
) ENGINE=INNODB;
INSERT INTO t1 (a1) VALUES ('a'),('a'),('a'),('a'), ('a');

CREATE TABLE t2 (
  pk_col1 INT NOT NULL,
  pk_col2 INT NOT NULL,
  a1 CHAR(64),
  a2 CHAR(64),
  PRIMARY KEY(pk_col1, pk_col2),
  KEY a1_idx (a1),
  KEY a1_a2_idx (a1, a2)
) ENGINE=INNODB;
INSERT INTO t2 (pk_col1, pk_col2, a1, a2) VALUES (1,1,'a','b'),(1,2,'a','b'),
                                                 (1,3,'a','c'),(1,4,'a','c'),
                                                 (2,1,'a','d');
ANALYZE TABLE t1;
ANALYZE TABLE t2;

#Doesn't use loose index scan irrespective of index extensions.
let query1=
SELECT DISTINCT a1
FROM t1
WHERE (pk_col = 2 OR pk_col = 22) AND a1 = 'a';

#Doesn't use loose index scan when index extensions is off.
let query2=
SELECT COUNT(DISTINCT a1)
FROM t1
GROUP BY a1,pk_col;

#Doesn't use loose index scan when index extensions is off.
let query3=
SELECT COUNT(DISTINCT a1)
FROM t2
GROUP BY a1,pk_col1;

#Uses loose index scan irrespective of index extensions.
let query4=
SELECT COUNT(DISTINCT a1)
FROM t2
GROUP BY a1,a2;

eval EXPLAIN $query1;
eval $query1;
eval EXPLAIN $query2;
eval $query2;
eval EXPLAIN $query3;
eval $query3;
eval EXPLAIN $query4;
eval $query4;

SET @optimizer_switch_save=@@optimizer_switch;
SET @@optimizer_switch= "use_index_extensions=off";

eval EXPLAIN $query1;
eval $query1;
eval EXPLAIN $query2;
eval $query2;
eval EXPLAIN $query3;
eval $query3;
eval EXPLAIN $query4;
eval $query4;

SET @@optimizer_switch= @optimizer_switch_save;
DROP TABLE t1, t2;

--echo #
--echo # Bug #24671968: WHEN THE OPTIMISER IS USING INDEX FOR GROUP-BY IT OFTEN
--echo #                OFTEN GIVES WRONG RESULTS
--echo #

CREATE TABLE t1 (
id int NOT NULL,
c1 int NOT NULL,
c2 int,
PRIMARY KEY(id),
INDEX c1_c2_idx(c1, c2));

INSERT INTO t1 (id, c1, c2) VALUES (1,1,1), (2,2,2), (10,10,1), (11,10,8),
                                   (12,10,1), (13,10,2);
ANALYZE TABLE t1;

# Query similar to the one mentioned in the bug page. Incorrectly chooses
# loose index scan.
let query1=
SELECT DISTINCT c1
FROM t1
WHERE EXISTS (SELECT *
              FROM DUAL
              WHERE (c2 = 2));

# IN subquery. Incorrectly chooses loose index scan.
let query2=
SELECT DISTINCT c1
FROM t1
WHERE 1 IN (2,
            (SELECT 1
            FROM DUAL
            WHERE (c2 = 2)),
            3);

# Similar to above queries but without subquery.
let query3=
SELECT DISTINCT c1
FROM t1
WHERE c2 = 2;

# Same as query1 with IGNORE INDEX. So this will not choose loose index scan.
let query4=
SELECT DISTINCT c1
FROM t1 IGNORE INDEX (c1_c2_idx)
WHERE EXISTS (SELECT *
              FROM DUAL
              WHERE (c2 = 2));

# Same as query2 with IGNORE INDEX. So this will not choose loose index scan.
let query5=
SELECT DISTINCT c1
FROM t1 IGNORE INDEX (c1_c2_idx)
WHERE 1 IN (2,
            (SELECT 1
            FROM DUAL
            WHERE (c2 = 2)),
            3);

eval EXPLAIN $query1;
eval EXPLAIN $query2;
eval EXPLAIN $query3;
eval EXPLAIN $query4;
eval EXPLAIN $query5;

# Looking for the tag in optimizer trace: "dependent_subquery_in_where".
SET optimizer_trace="enabled=on";

eval $query1;
SELECT TRACE INTO @trace FROM INFORMATION_SCHEMA.OPTIMIZER_TRACE;
SELECT @trace RLIKE "keypart_reference_from_where_clause";

SET optimizer_trace="enabled=off";

eval $query2;
eval $query3;
eval $query4;
eval $query5;

DROP TABLE t1;

--echo #
--echo # Bug #26532061: SELECT DISTINCT WITH SECONDARY KEY FOR
--echo #                'USING INDEX FOR GROUP-BY' BAD RESULTS
--echo #

CREATE TABLE t1(
  pk INT NOT NULL,
  c1 CHAR(2),
  c2 INT,
  PRIMARY KEY(pk),
  UNIQUE KEY ukey(c1, c2)
);

INSERT INTO t1(pk, c1, c2) VALUES (1,1,1),(2,2,2),(3,3,3),(4,5,4);
SET @a:=5;
--disable_warnings
INSERT IGNORE INTo t1(pk, c1, c2)
  SELECT (@a:=@a+1),@a,@a FROM t1, t1 t2,t1 t3, t1 t4;
--enable_warnings
ANALYZE TABLE t1;

SELECT * FROM t1 WHERE pk = 1 OR pk = 231;

#query shouldn't use loose index scan
let query1=
SELECT DISTINCT c1
FROM t1 FORCE INDEX(ukey)
WHERE pk IN (1,231) and c1 IS NOT NULL;

let query2=
SELECT DISTINCT c1
FROM t1 IGNORE INDEX(ukey)
WHERE pk IN (1,231) and c1 IS NOT NULL;

eval EXPLAIN $query1;
eval EXPLAIN $query2;

eval $query1;
eval $query2;

DROP TABLE t1;

--echo #
--echo # Bug #25989915: LOOSE INDEX SCANS RETURNING WRONG RESULT
--echo #

CREATE TABLE t1 (
  pk INT NOT NULL AUTO_INCREMENT,
  c1 varchar(100) DEFAULT NULL,
  c2 INT NOT NULL,
  PRIMARY KEY (pk),
  UNIQUE KEY ukey (c2,c1)
);

INSERT INTO t1(pk, c2) VALUES (100, 0), (101, 0), (102, 0), (103, 0);
ANALYZE TABLE t1;

let query1= SELECT COUNT(DISTINCT(c2)) FROM t1 WHERE pk IN (102, 101);
let query2= SELECT COUNT(DISTINCT(c2)) FROM t1 WHERE pk IN (102, 100);

eval EXPLAIN $query1;
eval EXPLAIN $query2;

eval $query1;
eval $query2;

DROP TABLE t1;