mariadb/mysql-test/t/func_gconcat.test

#
# simple test of group_concat function
#
--disable_warnings
drop table if exists t1, t2;
--enable_warnings

create table t1 (grp int, a bigint unsigned, c char(10) not null, d char(10) not null);
insert into t1 values (1,1,"a","a");
insert into t1 values (2,2,"b","a");
insert into t1 values (2,3,"c","b");
insert into t1 values (3,4,"E","a");
insert into t1 values (3,5,"C","b");
insert into t1 values (3,6,"D","b");
insert into t1 values (3,7,"d","d");
insert into t1 values (3,8,"d","d");
insert into t1 values (3,9,"D","c");

# Test of MySQL simple request
select grp,group_concat(c) from t1 group by grp;
explain extended select grp,group_concat(c) from t1 group by grp;
select grp,group_concat(a,c) from t1 group by grp;
select grp,group_concat("(",a,":",c,")") from t1 group by grp;

# Test of MySQL with options
select grp,group_concat(c separator ",") from t1 group by grp;
select grp,group_concat(c separator "---->") from t1 group by grp;
select grp,group_concat(c order by c) from t1 group by grp;
select grp,group_concat(c order by c desc) from t1 group by grp;
select grp,group_concat(d order by a) from t1 group by grp;
select grp,group_concat(d order by a desc) from t1 group by grp;
select grp,group_concat(a order by a,d+c-ascii(c)-a) from t1 group by grp;
select grp,group_concat(a order by d+c-ascii(c),a) from t1 group by grp;
select grp,group_concat(c order by 1) from t1 group by grp;
select grp,group_concat(c order by "c") from t1 group by grp;
select grp,group_concat(distinct c order by c) from t1 group by grp;
select grp,group_concat(distinct c order by c desc) from t1 group by grp;
explain extended select grp,group_concat(distinct c order by c desc) from t1 group by grp;
select grp,group_concat(c order by c separator ",") from t1 group by grp;
select grp,group_concat(c order by c desc separator ",") from t1 group by grp;
select grp,group_concat(distinct c order by c separator ",") from t1 group by grp;
explain extended select grp,group_concat(distinct c order by c separator ",") from t1 group by grp;
select grp,group_concat(distinct c order by c desc separator ",") from t1 group by grp;

# Test of SQL_LIST objects
select grp,group_concat(c order by grp desc) from t1 group by grp order by grp;


# Test transfer to real values

select grp, group_concat(a separator "")+0 from t1 group by grp;
select grp, group_concat(a separator "")+0.0 from t1 group by grp;
select grp, ROUND(group_concat(a separator "")) from t1 group by grp;
drop table t1;

# Test NULL values

create table t1 (grp int, c char(10));
insert into t1 values (1,NULL),(2,"b"),(2,NULL),(3,"E"),(3,NULL),(3,"D"),(3,NULL),(3,NULL),(3,"D"),(4,""),(5,NULL);
select grp,group_concat(c order by c) from t1 group by grp;

# Test warnings

set group_concat_max_len = 4;
select grp,group_concat(c) from t1 group by grp;
show warnings;
set group_concat_max_len = 1024;

# Test errors

--error 1111
select group_concat(sum(a)) from t1 group by grp;
--error 1054
select grp,group_concat(c order by 2) from t1 group by grp;

drop table t1;

# Test variable length

create table t1 ( URL_ID int(11), URL varchar(80));
create table t2 ( REQ_ID int(11), URL_ID int(11));
insert into t1 values (4,'www.host.com'), (5,'www.google.com'),(5,'www.help.com');
insert into t2 values (1,4), (5,4), (5,5);
# Make this order independent
--replace_result www.help.com X www.host.com X www.google.com X
select REQ_ID, Group_Concat(URL) as URL from t1, t2 where
t2.URL_ID = t1.URL_ID group by REQ_ID;
# check min/max function
--replace_result www.help.com X www.host.com X www.google.com X
select REQ_ID, Group_Concat(URL) as URL, Min(t1.URL_ID) urll,
Max(t1.URL_ID) urlg from t1, t2 where t2.URL_ID = t1.URL_ID group by REQ_ID;

drop table t1;
drop table t2;

create table t1 (id int, name varchar(16));
insert into t1 values (1,'longername'),(1,'evenlongername');
select ifnull(group_concat(concat(t1.id, ':', t1.name)), 'shortname') as 'without distinct: how it should be' from t1;
select distinct ifnull(group_concat(concat(t1.id, ':', t1.name)), 'shortname') as 'with distinct: cutoff at length of shortname' from t1;
drop table t1;

# check zero rows
create table t1(id int);
create table t2(id int);
insert into t1 values(0),(1);
select group_concat(t1.id) FROM t1,t2;
drop table t1;
drop table t2;

# check having
create table t1 (bar varchar(32));
insert into t1 values('test1'),('test2');
select group_concat(bar order by concat(bar,bar)) from t1;
select group_concat(bar order by concat(bar,bar) desc) from t1;
select bar from t1 having group_concat(bar)='';
select bar from t1 having instr(group_concat(bar), "test") > 0;
select bar from t1 having instr(group_concat(bar order by concat(bar,bar) desc), "test2,test1") > 0;
drop table t1;

# ORDER BY fix_fields()
create table t1 (a int, a1 varchar(10));
create table t2 (a0 int);
insert into t1 values (0,"a"),(0,"b"),(1,"c");
insert into t2 values (1),(2),(3);
select  group_concat(a1 order by (t1.a IN (select a0 from t2))) from t1;
select  group_concat(a1 order by (t1.a)) from t1;
drop table t1, t2;

#
# Problem with GROUP BY (Bug #2695)
#

CREATE TABLE t1 (id1 tinyint(4) NOT NULL, id2 tinyint(4) NOT NULL);
INSERT INTO t1 VALUES (1, 1),(1, 2),(1, 3),(1, 4),(1, 5),(2, 1),(2, 2),(2, 3);
CREATE TABLE t2 (id1 tinyint(4) NOT NULL);
INSERT INTO t2 VALUES (1),(2),(3),(4),(5);
SELECT t1.id1, GROUP_CONCAT(t1.id2 ORDER BY t1.id2 ASC) AS concat_id FROM t1, t2 WHERE t1.id1 = t2.id1 AND t1.id1=1 GROUP BY t1.id1;
SELECT t1.id1, GROUP_CONCAT(t1.id2 ORDER BY t1.id2 ASC) AS concat_id FROM t1, t2 WHERE t1.id1 = t2.id1 GROUP BY t1.id1;
SELECT t1.id1, GROUP_CONCAT(t1.id2 ORDER BY t1.id2 DESC) AS concat_id FROM t1, t2 WHERE t1.id1 = t2.id1 GROUP BY t1.id1;
SELECT t1.id1, GROUP_CONCAT(t1.id2 ORDER BY 6-t1.id2 ASC) AS concat_id FROM t1, t2 WHERE t1.id1 = t2.id1 GROUP BY t1.id1;

# The following failed when it was run twice:
SELECT t1.id1, GROUP_CONCAT(t1.id2,6-t1.id2 ORDER BY 6-t1.id2 ASC) AS concat_id FROM t1, t2 WHERE t1.id1 = t2.id1 GROUP BY t1.id1;
SELECT t1.id1, GROUP_CONCAT(t1.id2,6-t1.id2 ORDER BY 6-t1.id2 ASC) AS concat_id FROM t1, t2 WHERE t1.id1 = t2.id1 GROUP BY t1.id1;

SELECT t1.id1, GROUP_CONCAT(t1.id2,"/",6-t1.id2 ORDER BY 1+0,6-t1.id2,t1.id2 ASC) AS concat_id FROM t1, t2 WHERE t1.id1 = t2.id1 GROUP BY t1.id1;
drop table t1,t2;

#
# Problem with distinct (Bug #3381)
#

create table t1 (s1 char(10), s2 int not null);
insert into t1 values ('a',2),('b',2),('c',1),('a',3),('b',4),('c',4);
select distinct s1 from t1 order by s2,s1;
select group_concat(distinct s1) from t1;
select group_concat(distinct s1 order by s2) from t1 where s2 < 4;
# The following is wrong and needs to be fixed ASAP
select group_concat(distinct s1 order by s2) from t1;
drop table t1;

#
# Test with subqueries (Bug #3319)
#

create table t1 (a int, c int);
insert into t1 values (1, 2), (2, 3), (2, 4), (3, 5);
create table t2 (a int, c int);
insert into t2 values (1, 5), (2, 4), (3, 3), (3,3);
select group_concat(c) from t1;
select group_concat(c order by (select c from t2 where t2.a=t1.a limit 1)) as grp from t1;

select group_concat(c order by (select mid(group_concat(c order by a),1,5) from t2 where t2.a=t1.a)) as grp from t1;
select group_concat(c order by (select mid(group_concat(c order by a),1,5) from t2 where t2.a=t1.a) desc) as grp from t1;

# The following returns random results as we are sorting on blob addresses
# select group_concat(c order by (select group_concat(c order by a) from t2 where t2.a=t1.a)) as grp from t1;
# select group_concat(c order by (select group_concat(c) from t2 where a=t1.a)) as grp from t1;

select a,c,(select group_concat(c order by a) from t2 where a=t1.a) as grp from t1 order by grp;
drop table t1,t2;

#
# group_concat of expression with GROUP BY and external GROUP BY
#
CREATE TABLE t1 ( a int );
CREATE TABLE t2 ( a int );
INSERT INTO t1 VALUES (1), (2);
INSERT INTO t2 VALUES (1), (2);
SELECT GROUP_CONCAT(t1.a*t2.a ORDER BY t2.a) FROM t1, t2 GROUP BY t1.a;
DROP TABLE t1, t2;

#
# Bug #4035: group_concat() and HAVING
#

CREATE TABLE t1 (a char(4));
INSERT INTO t1 VALUES ('John'), ('Anna'), ('Bill');
SELECT GROUP_CONCAT(a SEPARATOR '||') AS names FROM t1 
  HAVING names LIKE '%An%';
SELECT GROUP_CONCAT(a SEPARATOR '###') AS names FROM t1 
  HAVING LEFT(names, 1) ='J';
DROP TABLE t1;