percona-server-test-5.6 5.6.22-rel71.0-0ubuntu4 / usr / lib / mysql-testsuite / t / count_distinct.test

#
# Problem with count(distinct)
#

--disable_warnings
drop table if exists t1,t2,t3;
--enable_warnings

create table t1 (libname varchar(21) not null, city text, primary key (libname));
create table t2 (isbn varchar(21) not null, author text, title text, primary key (isbn));
create table t3 (isbn varchar(21) not null, libname varchar(21) not null, quantity int ,primary key (isbn,libname));
insert into t2 values ('001','Daffy','A duck''s life');
insert into t2 values ('002','Bugs','A rabbit\'s life');
insert into t2 values ('003','Cowboy','Life on the range');
insert into t2 values ('000','Anonymous','Wanna buy this book?');
insert into t2 values ('004','Best Seller','One Heckuva book');
insert into t2 values ('005','EveryoneBuys','This very book');
insert into t2 values ('006','San Fran','It is a san fran lifestyle');
insert into t2 values ('007','BerkAuthor','Cool.Berkley.the.book');
insert into t3 values('000','New York Public Libra','1');
insert into t3 values('001','New York Public Libra','2');
insert into t3 values('002','New York Public Libra','3');
insert into t3 values('003','New York Public Libra','4');
insert into t3 values('004','New York Public Libra','5');
insert into t3 values('005','New York Public Libra','6');
insert into t3 values('006','San Fransisco Public','5');
insert into t3 values('007','Berkeley Public1','3');
insert into t3 values('007','Berkeley Public2','3');
insert into t3 values('001','NYC Lib','8');
insert into t1 values ('New York Public Libra','New York');
insert into t1 values ('San Fransisco Public','San Fran');
insert into t1 values ('Berkeley Public1','Berkeley');
insert into t1 values ('Berkeley Public2','Berkeley');
insert into t1 values ('NYC Lib','New York');
select t2.isbn,city,t1.libname,count(t1.libname) as a from t3 left join t1 on t3.libname=t1.libname left join t2 on t3.isbn=t2.isbn group by city,t1.libname;
select t2.isbn,city,t1.libname,count(distinct t1.libname) as a from t3 left join t1 on t3.libname=t1.libname left join t2 on t3.isbn=t2.isbn group by city having count(distinct t1.libname) > 1;
select t2.isbn,city,t1.libname,count(distinct t1.libname) as a from t3 left join t1 on t3.libname=t1.libname left join t2 on t3.isbn=t2.isbn group by city having count(distinct concat(t1.libname,'a')) > 1;

select t2.isbn,city,@bar:=t1.libname,count(distinct t1.libname) as a
       from t3 left join t1 on t3.libname=t1.libname left join t2
       on t3.isbn=t2.isbn group by city having count(distinct
       t1.libname) > 1;
#
# Wrong result, see bug#49872
# 
SELECT @bar;

select t2.isbn,city,concat(@bar:=t1.libname),count(distinct t1.libname) as a
       from t3 left join t1 on t3.libname=t1.libname left join t2
       on t3.isbn=t2.isbn group by city having count(distinct
       t1.libname) > 1;
#
# Wrong result, see bug#49872
# 
SELECT @bar;

drop table t1, t2, t3;

#
# Problem with LEFT JOIN
#

create table t1 (f1 int);
insert into t1 values (1);
create table t2 (f1 int,f2 int);
select t1.f1,count(distinct t2.f2),count(distinct 1,NULL) from t1 left join t2 on t1.f1=t2.f1 group by t1.f1;
drop table t1,t2;


#
# Empty tables
#
create table t1 (f int);
select count(distinct f) from t1;
drop table t1;

# End of 4.1 tests

#
# Bug #6515
#

create table t1 (a char(3), b char(20), primary key (a, b));
insert into t1 values ('ABW', 'Dutch'), ('ABW', 'English');
select count(distinct a) from t1 group by b;
drop table t1;

#
# Bug #9593 "The combination of COUNT, DISTINCT and CONCAT 
#            seems to lock the server"
# Bug appears only on Windows system
#

create table t1 (f1 int, f2 int);
insert into t1 values (0,1),(1,2);
select count(distinct if(f1,3,f2)) from t1;
drop table t1;

#
# Bug #51980 "mysqld service crashes with a simple COUNT(DISTINCT) query 
#             over a view"
#

create table t1 (i int);
insert into t1 values (0), (1);
create view v1 as select * from t1;
select count(distinct i) from v1;
drop table t1;
drop view v1;

--echo #
--echo # Bug#11760197: INCORRECT RESULTS WITH COUNT DISTINCT AND BIG_TABLES
--echo #

CREATE TABLE t1 (a INT PRIMARY KEY);
INSERT INTO t1 VALUES (1),(2);
SET @big_tables_save= @@big_tables;
SET SESSION big_tables=0;
SELECT COUNT(DISTINCT t1.a) FROM t1,t1 t2 WHERE t1.a = 1;
SET SESSION big_tables=1;
SELECT COUNT(DISTINCT t1.a) FROM t1,t1 t2 WHERE t1.a = 1;
DROP TABLE  t1;

CREATE TABLE t1 (a BLOB ,PRIMARY KEY(a(10)));
INSERT INTO t1 VALUES (1),(2);
SET SESSION big_tables=0;
SELECT COUNT(DISTINCT t1.a) FROM t1,t1 t2 WHERE t1.a = 1;
SELECT COUNT(DISTINCT t1.a) FROM t1,t1 t2 WHERE t1.a = '1';
SET SESSION big_tables=1;
SELECT COUNT(DISTINCT t1.a) FROM t1,t1 t2 WHERE t1.a = 1;
SELECT COUNT(DISTINCT t1.a) FROM t1,t1 t2 WHERE t1.a = '1';
DROP TABLE  t1;

CREATE TABLE t1 (a CHAR PRIMARY KEY);
INSERT INTO t1 VALUES (1),(2);
SET SESSION big_tables=0;
SELECT COUNT(DISTINCT t1.a) FROM t1,t1 t2 WHERE t1.a = 1;
SELECT COUNT(DISTINCT t1.a) FROM t1,t1 t2 WHERE t1.a = '1';
SET SESSION big_tables=1;
SELECT COUNT(DISTINCT t1.a) FROM t1,t1 t2 WHERE t1.a = 1;
SELECT COUNT(DISTINCT t1.a) FROM t1,t1 t2 WHERE t1.a = '1';
SET SESSION big_tables= @big_tables_save;
DROP TABLE  t1;

--echo #
--echo # BUG#17607155: ASSERTION FAILED: 
--echo #               ((ITEM_RESULT_FIELD*)ITEM)->RESULT_FIELD
--echo #

CREATE TABLE t (a INT)ENGINE=INNODB;
INSERT t VALUES(1);
SELECT '' FROM t GROUP BY 1 WITH ROLLUP HAVING GROUP_CONCAT('');
DROP TABLE t;

--echo #
--echo # BUG#17957913: ASSERTION `((ITEM_RESULT_FIELD*)ITEM)->RESULT_FIELD'
--echo #               FAILS IN CREATE_TMP_FIELD
--echo #

CREATE TABLE t1 ( i INT );
INSERT INTO t1 VALUES (1),(2);
SELECT GROUP_CONCAT(i,'foo') AS f1 FROM t1 GROUP BY 'a' WITH ROLLUP;
DROP TABLE t1;

--echo #
--echo # Bug #17555462: SELECT DISTINCT OF VIEW WITH CONSTANT STRING
--echo #                RETURNS WRONG RESULT
--echo #

CREATE TABLE t (x char(3));
INSERT INTO t VALUES ('foo'), ('bar'); 
CREATE VIEW v AS SELECT 'x' AS x FROM t;
SELECT DISTINCT x FROM v;

DROP TABLE t;
DROP VIEW v;

--echo #
--echo # Bug #17634335 SELECT DISTINCT...GROUP BY RETURNS WRONG
--echo #               RESULTS IN SOME CASES
--echo #

CREATE TABLE t1 (
a int(11) DEFAULT NULL,
b int(11) DEFAULT NULL,
c int(11) DEFAULT NULL
) ENGINE=InnoDB;

INSERT INTO t1
VALUES (1,1,1),(1,2,1),(1,3,0),
       (1,4,0),(2,1,1),(2,2,1),(2,3,0),(2,4,0);
SELECT DISTINCT a, b
FROM (SELECT * FROM t1 ORDER BY a, b) AS f
GROUP BY a,c;
SELECT DISTINCT a, b, 0
FROM (SELECT * FROM t1 ORDER BY a, b) AS f
GROUP BY a,c;
DROP TABLE t1;

--echo #
--echo # Bug #18853696 WRONG RESULT FOR COUNT DISTINCT OF RESULT 
--echo #               OF JOINED DERIVED TABLE
--echo #

CREATE TABLE t1 (
pk INT NOT NULL,
col_varchar_key VARCHAR(1),
col_varchar_nokey VARCHAR(1),
PRIMARY KEY (pk),
KEY col_varchar_key (col_varchar_key)
);

INSERT INTO t1 VALUES (10,'x','x');
INSERT INTO t1 VALUES (11,'d','d');
INSERT INTO t1 VALUES (12,'r','r');
INSERT INTO t1 VALUES (13,'f','f');
INSERT INTO t1 VALUES (14,'y','y');

CREATE TABLE t2 (
pk INT NOT NULL,
col_int_nokey INT,
col_varchar_key VARCHAR(1),
PRIMARY KEY (pk),
KEY col_varchar_key (col_varchar_key)
);

INSERT INTO t2 VALUES (1,7,'x');

SELECT COUNT( DISTINCT table1.col_varchar_key )
FROM t2 AS table1
JOIN (SELECT * FROM t1) AS table2
ON ( table2.pk = table1.col_int_nokey )
WHERE table1.pk = 1;

SELECT COUNT( DISTINCT table1.col_varchar_key )
FROM t2 AS table1
JOIN t1 AS table2
ON ( table2.pk = table1.col_int_nokey )
WHERE table1.pk = 1;

SELECT COUNT( table1.col_varchar_key )
FROM t2 AS table1
JOIN (SELECT * FROM t1) AS table2
ON ( table2.pk = table1.col_int_nokey )
WHERE table1.pk = 1;

DROP TABLE t1,t2;

--echo # End of test for Bug#18853696