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mariadb/mysql-test/r/func_gconcat.result
unknown 8aa2d6bf92 Bug #26815: 
When creating a temporary table the concise column type
 of a string expression is decided based on its length:
 - if its length is under 512 it is stored as either 
   varchar or char.
 - otherwise it is stored as a BLOB.
 
 There is a flag (convert_blob_length) to create_tmp_field 
 that, when >0 allows to force creation of a varchar if the
 max blob length is under convert_blob_length.
 However it must be verified that convert_blob_length 
 (settable through a SQL option in some cases) is 
 under the maximum that can be stored in a varchar column.
 While performing that check for expressions in 
 create_tmp_field_from_item the max length of the blob was
 used instead. This causes blob columns to be created in the
 heap temp table used by GROUP_CONCAT (where blobs must not
 be created in the temp table because of the constant 
 convert_blob_length that is passed to create_tmp_field() ).
 And since these blob columns are not expected in that place
 we get wrong results.
 Fixed by checking that the value of the flag variable is 
 in the limits that fit into VARCHAR instead of the max length
 of the blob column.


mysql-test/r/func_gconcat.result:
  Bug #26815: test case
mysql-test/t/func_gconcat.test:
  Bug #26815: test case
sql/item_sum.cc:
  Bug #26815: wrong length was checked
sql/sql_select.cc:
  Bug #26815: wrong length was checked
2007-03-27 19:28:04 +03:00

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drop table if exists t1, t2;
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");
select grp,group_concat(c) from t1 group by grp;
grp group_concat(c)
1 a
2 b,c
3 E,C,D,d,d,D
explain extended select grp,group_concat(c) from t1 group by grp;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 9 Using filesort
Warnings:
Note 1003 select `test`.`t1`.`grp` AS `grp`,group_concat(`test`.`t1`.`c` separator ',') AS `group_concat(c)` from `test`.`t1` group by `test`.`t1`.`grp`
select grp,group_concat(a,c) from t1 group by grp;
grp group_concat(a,c)
1 1a
2 2b,3c
3 4E,5C,6D,7d,8d,9D
select grp,group_concat("(",a,":",c,")") from t1 group by grp;
grp group_concat("(",a,":",c,")")
1 (1:a)
2 (2:b),(3:c)
3 (4:E),(5:C),(6:D),(7:d),(8:d),(9:D)
select grp,group_concat(c separator ",") from t1 group by grp;
grp group_concat(c separator ",")
1 a
2 b,c
3 E,C,D,d,d,D
select grp,group_concat(c separator "---->") from t1 group by grp;
grp group_concat(c separator "---->")
1 a
2 b---->c
3 E---->C---->D---->d---->d---->D
select grp,group_concat(c order by c) from t1 group by grp;
grp group_concat(c order by c)
1 a
2 b,c
3 C,D,d,d,D,E
select grp,group_concat(c order by c desc) from t1 group by grp;
grp group_concat(c order by c desc)
1 a
2 c,b
3 E,D,d,d,D,C
select grp,group_concat(d order by a) from t1 group by grp;
grp group_concat(d order by a)
1 a
2 a,b
3 a,b,b,d,d,c
select grp,group_concat(d order by a desc) from t1 group by grp;
grp group_concat(d order by a desc)
1 a
2 b,a
3 c,d,d,b,b,a
select grp,group_concat(a order by a,d+c-ascii(c)-a) from t1 group by grp;
grp group_concat(a order by a,d+c-ascii(c)-a)
1 1
2 2,3
3 4,5,6,7,8,9
select grp,group_concat(a order by d+c-ascii(c),a) from t1 group by grp;
grp group_concat(a order by d+c-ascii(c),a)
1 1
2 3,2
3 7,8,4,6,9,5
select grp,group_concat(c order by 1) from t1 group by grp;
grp group_concat(c order by 1)
1 a
2 b,c
3 C,D,d,d,D,E
select grp,group_concat(distinct c order by c) from t1 group by grp;
grp group_concat(distinct c order by c)
1 a
2 b,c
3 C,D,E
select grp,group_concat(distinct c order by c desc) from t1 group by grp;
grp group_concat(distinct c order by c desc)
1 a
2 c,b
3 E,D,C
explain extended select grp,group_concat(distinct c order by c desc) from t1 group by grp;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 9 Using filesort
Warnings:
Note 1003 select `test`.`t1`.`grp` AS `grp`,group_concat(distinct `test`.`t1`.`c` order by `test`.`t1`.`c` DESC separator ',') AS `group_concat(distinct c order by c desc)` from `test`.`t1` group by `test`.`t1`.`grp`
select grp,group_concat(c order by c separator ",") from t1 group by grp;
grp group_concat(c order by c separator ",")
1 a
2 b,c
3 C,D,d,d,D,E
select grp,group_concat(c order by c desc separator ",") from t1 group by grp;
grp group_concat(c order by c desc separator ",")
1 a
2 c,b
3 E,D,d,d,D,C
select grp,group_concat(distinct c order by c separator ",") from t1 group by grp;
grp group_concat(distinct c order by c separator ",")
1 a
2 b,c
3 C,D,E
explain extended select grp,group_concat(distinct c order by c separator ",") from t1 group by grp;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 9 Using filesort
Warnings:
Note 1003 select `test`.`t1`.`grp` AS `grp`,group_concat(distinct `test`.`t1`.`c` order by `test`.`t1`.`c` ASC separator ',') AS `group_concat(distinct c order by c separator ",")` from `test`.`t1` group by `test`.`t1`.`grp`
select grp,group_concat(distinct c order by c desc separator ",") from t1 group by grp;
grp group_concat(distinct c order by c desc separator ",")
1 a
2 c,b
3 E,D,C
select grp,group_concat(c order by grp desc) from t1 group by grp order by grp;
grp group_concat(c order by grp desc)
1 a
2 c,b
3 D,d,d,D,C,E
select grp, group_concat(a separator "")+0 from t1 group by grp;
grp group_concat(a separator "")+0
1 1
2 23
3 456789
select grp, group_concat(a separator "")+0.0 from t1 group by grp;
grp group_concat(a separator "")+0.0
1 1.0
2 23.0
3 456789.0
select grp, ROUND(group_concat(a separator "")) from t1 group by grp;
grp ROUND(group_concat(a separator ""))
1 1
2 23
3 456789
drop table t1;
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;
grp group_concat(c order by c)
1 NULL
2 b
3 D,D,E
4
5 NULL
set group_concat_max_len = 4;
select grp,group_concat(c) from t1 group by grp;
grp group_concat(c)
1 NULL
2 b
3 D,D,
4
5 NULL
Warnings:
Warning 1260 1 line(s) were cut by GROUP_CONCAT()
show warnings;
Level Code Message
Warning 1260 1 line(s) were cut by GROUP_CONCAT()
set group_concat_max_len = 1024;
select group_concat(sum(c)) from t1 group by grp;
ERROR HY000: Invalid use of group function
select grp,group_concat(c order by 2) from t1 group by grp;
ERROR 42S22: Unknown column '2' in 'order clause'
drop table t1;
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);
select REQ_ID, Group_Concat(URL) as URL from t1, t2 where
t2.URL_ID = t1.URL_ID group by REQ_ID;
REQ_ID URL
1 X
5 X,X,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;
REQ_ID URL urll urlg
1 X 4 4
5 X,X,X 4 5
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;
without distinct: how it should be
1:longername,1:evenlongername
select distinct ifnull(group_concat(concat(t1.id, ':', t1.name)), 'shortname') as 'with distinct: cutoff at length of shortname' from t1;
with distinct: cutoff at length of shortname
1:longername,1:evenlongername
drop table t1;
create table t1(id int);
create table t2(id int);
insert into t1 values(0),(1);
select group_concat(t1.id) FROM t1,t2;
group_concat(t1.id)
NULL
drop table t1;
drop table t2;
create table t1 (bar varchar(32));
insert into t1 values('test1'),('test2');
select group_concat(bar order by concat(bar,bar)) from t1;
group_concat(bar order by concat(bar,bar))
test1,test2
select group_concat(bar order by concat(bar,bar) desc) from t1;
group_concat(bar order by concat(bar,bar) desc)
test2,test1
select bar from t1 having group_concat(bar)='';
bar
select bar from t1 having instr(group_concat(bar), "test") > 0;
bar
test1
select bar from t1 having instr(group_concat(bar order by concat(bar,bar) desc), "test2,test1") > 0;
bar
test1
drop table t1;
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;
group_concat(a1 order by (t1.a IN (select a0 from t2)))
b,a,c
select group_concat(a1 order by (t1.a)) from t1;
group_concat(a1 order by (t1.a))
b,a,c
drop table t1, t2;
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;
id1 concat_id
1 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 GROUP BY t1.id1;
id1 concat_id
1 1,2,3,4,5
2 1,2,3
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;
id1 concat_id
1 5,4,3,2,1
2 3,2,1
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;
id1 concat_id
1 5,4,3,2,1
2 3,2,1
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;
id1 concat_id
1 51,42,33,24,15
2 33,24,15
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;
id1 concat_id
1 51,42,33,24,15
2 33,24,15
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;
id1 concat_id
1 5/1,4/2,3/3,2/4,1/5
2 3/3,2/4,1/5
drop table t1,t2;
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;
s1
c
a
b
select group_concat(distinct s1) from t1;
group_concat(distinct s1)
a,b,c
select group_concat(distinct s1 order by s2) from t1 where s2 < 4;
group_concat(distinct s1 order by s2)
c,b,a
select group_concat(distinct s1 order by s2) from t1;
group_concat(distinct s1 order by s2)
c,b,a,c
drop table t1;
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;
group_concat(c)
2,3,4,5
select group_concat(c order by (select c from t2 where t2.a=t1.a limit 1)) as grp from t1;
grp
5,4,3,2
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;
grp
5,4,3,2
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;
grp
2,4,3,5
select t1.a, group_concat(c order by (select c from t2 where t2.a=t1.a limit 1)) as grp from t1 group by 1;
a grp
1 2
2 4,3
3 5
select t1.a, 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 group by 1;
a grp
1 2
2 4,3
3 5
select t1.a, 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 group by 1;
a grp
1 2
2 4,3
3 5
select a,c,(select group_concat(c order by a) from t2 where a=t1.a) as grp from t1 order by grp;
a c grp
3 5 3,3
2 3 4
2 4 4
1 2 5
drop table t1,t2;
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;
GROUP_CONCAT(t1.a*t2.a ORDER BY t2.a)
1,2
2,4
DROP TABLE t1, t2;
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%';
names
John||Anna||Bill
SELECT GROUP_CONCAT(a SEPARATOR '###') AS names FROM t1
HAVING LEFT(names, 1) ='J';
names
John###Anna###Bill
DROP TABLE t1;
CREATE TABLE t1 ( a int, b TEXT );
INSERT INTO t1 VALUES (1,'First Row'), (2,'Second Row');
SELECT GROUP_CONCAT(b ORDER BY b) FROM t1 GROUP BY a;
GROUP_CONCAT(b ORDER BY b)
First Row
Second Row
DROP TABLE t1;
CREATE TABLE t1 (A_ID INT NOT NULL,A_DESC CHAR(3) NOT NULL,PRIMARY KEY (A_ID));
INSERT INTO t1 VALUES (1,'ABC'), (2,'EFG'), (3,'HIJ');
CREATE TABLE t2 (A_ID INT NOT NULL,B_DESC CHAR(3) NOT NULL,PRIMARY KEY (A_ID,B_DESC));
INSERT INTO t2 VALUES (1,'A'),(1,'B'),(3,'F');
SELECT t1.A_ID, GROUP_CONCAT(t2.B_DESC) AS B_DESC FROM t1 LEFT JOIN t2 ON t1.A_ID=t2.A_ID GROUP BY t1.A_ID ORDER BY t1.A_DESC;
A_ID B_DESC
1 A,B
2 NULL
3 F
DROP TABLE t1;
DROP TABLE t2;
create table t1 (a int, b text);
insert into t1 values (1, 'bb'), (1, 'ccc'), (1, 'a'), (1, 'bb'), (1, 'ccc');
insert into t1 values (2, 'BB'), (2, 'CCC'), (2, 'A'), (2, 'BB'), (2, 'CCC');
select group_concat(b) from t1 group by a;
group_concat(b)
bb,ccc,a,bb,ccc
BB,CCC,A,BB,CCC
select group_concat(distinct b) from t1 group by a;
group_concat(distinct b)
bb,ccc,a
BB,CCC,A
select group_concat(b order by b) from t1 group by a;
group_concat(b order by b)
a,bb,bb,ccc,ccc
A,BB,BB,CCC,CCC
select group_concat(distinct b order by b) from t1 group by a;
group_concat(distinct b order by b)
a,bb,ccc
A,BB,CCC
set local group_concat_max_len=4;
select group_concat(b) from t1 group by a;
group_concat(b)
bb,c
BB,C
Warnings:
Warning 1260 2 line(s) were cut by GROUP_CONCAT()
select group_concat(distinct b) from t1 group by a;
group_concat(distinct b)
bb,c
BB,C
Warnings:
Warning 1260 2 line(s) were cut by GROUP_CONCAT()
select group_concat(b order by b) from t1 group by a;
group_concat(b order by b)
a,bb
A,BB
Warnings:
Warning 1260 2 line(s) were cut by GROUP_CONCAT()
select group_concat(distinct b order by b) from t1 group by a;
group_concat(distinct b order by b)
a,bb
A,BB
Warnings:
Warning 1260 2 line(s) were cut by GROUP_CONCAT()
insert into t1 values (1, concat(repeat('1', 300), '2')),
(1, concat(repeat('1', 300), '2')), (1, concat(repeat('0', 300), '1')),
(2, concat(repeat('1', 300), '2')), (2, concat(repeat('1', 300), '2')),
(2, concat(repeat('0', 300), '1'));
set local group_concat_max_len=1024;
select group_concat(b) from t1 group by a;
group_concat(b)
bb,ccc,a,bb,ccc,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001
BB,CCC,A,BB,CCC,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001
select group_concat(distinct b) from t1 group by a;
group_concat(distinct b)
bb,ccc,a,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001
BB,CCC,A,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001
select group_concat(b order by b) from t1 group by a;
group_concat(b order by b)
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,a,bb,bb,ccc,ccc
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,A,BB,BB,CCC,CCC
select group_concat(distinct b order by b) from t1 group by a;
group_concat(distinct b order by b)
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,a,bb,ccc
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,A,BB,CCC
set local group_concat_max_len=400;
select group_concat(b) from t1 group by a;
group_concat(b)
bb,ccc,a,bb,ccc,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,1111111111111111111111111111111111111111111111111111111111111111111111111111111111
BB,CCC,A,BB,CCC,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,1111111111111111111111111111111111111111111111111111111111111111111111111111111111
Warnings:
Warning 1260 2 line(s) were cut by GROUP_CONCAT()
select group_concat(distinct b) from t1 group by a;
group_concat(distinct b)
bb,ccc,a,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
BB,CCC,A,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Warnings:
Warning 1260 2 line(s) were cut by GROUP_CONCAT()
select group_concat(b order by b) from t1 group by a;
group_concat(b order by b)
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
Warnings:
Warning 1260 2 line(s) were cut by GROUP_CONCAT()
select group_concat(distinct b order by b) from t1 group by a;
group_concat(distinct b order by b)
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
Warnings:
Warning 1260 2 line(s) were cut by GROUP_CONCAT()
drop table t1;
create table t1 (a varchar(255) character set cp1250 collate cp1250_general_ci,
b varchar(255) character set koi8r);
insert into t1 values ('xxx','yyy');
select collation(a) from t1;
collation(a)
cp1250_general_ci
select collation(group_concat(a)) from t1;
collation(group_concat(a))
cp1250_general_ci
create table t2 select group_concat(a) as a from t1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` varchar(400) character set cp1250 default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select collation(group_concat(a,_koi8r'test')) from t1;
collation(group_concat(a,_koi8r'test'))
cp1250_general_ci
select collation(group_concat(a,_koi8r 0xC1C2)) from t1;
ERROR HY000: Illegal mix of collations (cp1250_general_ci,IMPLICIT) and (koi8r_general_ci,COERCIBLE) for operation 'group_concat'
select collation(group_concat(a,b)) from t1;
ERROR HY000: Illegal mix of collations (cp1250_general_ci,IMPLICIT) and (koi8r_general_ci,IMPLICIT) for operation 'group_concat'
drop table t1;
drop table t2;
CREATE TABLE t1 (a CHAR(10) CHARACTER SET cp850);
INSERT INTO t1 VALUES ('<27>');
SELECT a FROM t1;
a
<EFBFBD>
SELECT GROUP_CONCAT(a) FROM t1;
GROUP_CONCAT(a)
<EFBFBD>
DROP TABLE t1;
CREATE TABLE t1 (id int);
SELECT GROUP_CONCAT(id) AS gc FROM t1 HAVING gc IS NULL;
gc
NULL
DROP TABLE t1;
create table t2 (a int, b int);
insert into t2 values (1,1), (2,2);
select b x, (select group_concat(x) from t2) from t2;
x (select group_concat(x) from t2)
1 1,1
2 2,2
drop table t2;
create table t1 (d int not null auto_increment,primary key(d), a int, b int, c int);
insert into t1(a,b) values (1,3), (1,4), (1,2), (2,7), (1,1), (1,2), (2,3), (2,3);
select d,a,b from t1 order by a;
d a b
1 1 3
2 1 4
3 1 2
5 1 1
6 1 2
4 2 7
7 2 3
8 2 3
explain select a, group_concat(b) from t1 group by a with rollup;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using filesort
select a, group_concat(b) from t1 group by a with rollup;
a group_concat(b)
1 3,4,2,1,2
2 7,3,3
NULL 3,4,2,1,2,7,3,3
select a, group_concat(distinct b) from t1 group by a with rollup;
a group_concat(distinct b)
1 3,4,2,1
2 7,3
NULL 3,4,2,1,7
select a, group_concat(b order by b) from t1 group by a with rollup;
a group_concat(b order by b)
1 1,2,2,3,4
2 3,3,7
NULL 1,2,2,3,3,3,4,7
select a, group_concat(distinct b order by b) from t1 group by a with rollup;
a group_concat(distinct b order by b)
1 1,2,3,4
2 3,7
NULL 1,2,3,4,7
drop table t1;
create table t1 (a char(3), b char(20), primary key (a, b));
insert into t1 values ('ABW', 'Dutch'), ('ABW', 'English');
select group_concat(a) from t1 group by b;
group_concat(a)
ABW
ABW
drop table t1;
CREATE TABLE t1 (
aID smallint(5) unsigned NOT NULL auto_increment,
sometitle varchar(255) NOT NULL default '',
bID smallint(5) unsigned NOT NULL,
PRIMARY KEY (aID),
UNIQUE KEY sometitle (sometitle)
);
INSERT INTO t1 SET sometitle = 'title1', bID = 1;
INSERT INTO t1 SET sometitle = 'title2', bID = 1;
CREATE TABLE t2 (
bID smallint(5) unsigned NOT NULL auto_increment,
somename varchar(255) NOT NULL default '',
PRIMARY KEY (bID),
UNIQUE KEY somename (somename)
);
INSERT INTO t2 SET somename = 'test';
SELECT COUNT(*), GROUP_CONCAT(DISTINCT t2.somename SEPARATOR ' |')
FROM t1 JOIN t2 ON t1.bID = t2.bID;
COUNT(*) GROUP_CONCAT(DISTINCT t2.somename SEPARATOR ' |')
2 test
INSERT INTO t2 SET somename = 'test2';
SELECT COUNT(*), GROUP_CONCAT(DISTINCT t2.somename SEPARATOR ' |')
FROM t1 JOIN t2 ON t1.bID = t2.bID;
COUNT(*) GROUP_CONCAT(DISTINCT t2.somename SEPARATOR ' |')
2 test
DELETE FROM t2 WHERE somename = 'test2';
SELECT COUNT(*), GROUP_CONCAT(DISTINCT t2.somename SEPARATOR ' |')
FROM t1 JOIN t2 ON t1.bID = t2.bID;
COUNT(*) GROUP_CONCAT(DISTINCT t2.somename SEPARATOR ' |')
2 test
DROP TABLE t1,t2;
select * from (select group_concat('c') from DUAL) t;
group_concat('c')
c
create table t1 ( a int not null default 0);
select * from (select group_concat(a) from t1) t2;
group_concat(a)
NULL
select group_concat('x') UNION ALL select 1;
group_concat('x')
x
1
drop table t1;
CREATE TABLE t1 (id int, a varchar(9));
INSERT INTO t1 VALUES
(2, ''), (1, ''), (2, 'x'), (1, 'y'), (3, 'z'), (3, '');
SELECT GROUP_CONCAT(a) FROM t1;
GROUP_CONCAT(a)
,,x,y,z,
SELECT GROUP_CONCAT(a ORDER BY a) FROM t1;
GROUP_CONCAT(a ORDER BY a)
,,,x,y,z
SELECT GROUP_CONCAT(a) FROM t1 GROUP BY id;
GROUP_CONCAT(a)
,y
,x
z,
SELECT GROUP_CONCAT(a ORDER BY a) FROM t1 GROUP BY id;
GROUP_CONCAT(a ORDER BY a)
,y
,x
,z
DROP TABLE t1;
create table t1(f1 int);
insert into t1 values(1),(2),(3);
select f1, group_concat(f1+1) from t1 group by f1 with rollup;
f1 group_concat(f1+1)
1 2
2 3
3 4
NULL 2,3,4
select count(distinct (f1+1)) from t1 group by f1 with rollup;
count(distinct (f1+1))
1
1
1
3
drop table t1;
create table t1 (f1 int unsigned, f2 varchar(255));
insert into t1 values (1,repeat('a',255)),(2,repeat('b',255));
select f2,group_concat(f1) from t1 group by f2;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def test t1 t1 f2 f2 253 255 255 Y 0 0 8
def group_concat(f1) 253 400 1 Y 128 0 63
f2 group_concat(f1)
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 1
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 2
drop table t1;
set names latin1;
create table t1 (a char, b char);
insert into t1 values ('a', 'a'), ('a', 'b'), ('b', 'a'), ('b', 'b');
create table t2 select group_concat(b) as a from t1 where a = 'a';
create table t3 (select group_concat(a) as a from t1 where a = 'a') union
(select group_concat(b) as a from t1 where a = 'b');
select charset(a) from t2;
charset(a)
latin1
select charset(a) from t3;
charset(a)
latin1
latin1
drop table t1, t2, t3;
set names default;
create table t1 (c1 varchar(10), c2 int);
select charset(group_concat(c1 order by c2)) from t1;
charset(group_concat(c1 order by c2))
latin1
drop table t1;
CREATE TABLE t1 (a INT(10), b LONGTEXT, PRIMARY KEY (a));
SET GROUP_CONCAT_MAX_LEN = 20000000;
INSERT INTO t1 VALUES (1,REPEAT(CONCAT('A',CAST(CHAR(0) AS BINARY),'B'), 40000));
INSERT INTO t1 SELECT a + 1, b FROM t1;
SELECT a, CHAR_LENGTH(b) FROM t1;
a CHAR_LENGTH(b)
1 120000
2 120000
SELECT CHAR_LENGTH( GROUP_CONCAT(b) ) FROM t1;
CHAR_LENGTH( GROUP_CONCAT(b) )
240001
SET GROUP_CONCAT_MAX_LEN = 1024;
DROP TABLE t1;
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (2,1), (1,2), (2,2), (1,3);
SELECT GROUP_CONCAT(a), x
FROM (SELECT a, GROUP_CONCAT(b) x FROM t1 GROUP BY a) AS s
GROUP BY x;
GROUP_CONCAT(a) x
2 1,2
1 2,3
DROP TABLE t1;
set names utf8;
create table t1
(
x text character set utf8 not null,
y integer not null
);
insert into t1 values (repeat('a', 1022), 0), (repeat(_utf8 0xc3b7, 4), 0);
set group_concat_max_len= 1022 + 10;
select @x:=group_concat(x) from t1 group by y;
select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
1032 1031 1027 aaaaaaa,÷÷÷÷ C3B7C3B7C3B7
set group_concat_max_len= 1022 + 9;
select @x:=group_concat(x) from t1 group by y;
select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
1031 1031 1027 aaaaaaa,÷÷÷÷ C3B7C3B7C3B7
set group_concat_max_len= 1022 + 8;
select @x:=group_concat(x) from t1 group by y;
select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
1030 1029 1026 aaaaaaaa,÷÷÷ C3B7C3B7C3B7
set group_concat_max_len= 1022 + 7;
select @x:=group_concat(x) from t1 group by y;
select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
1029 1029 1026 aaaaaaaa,÷÷÷ C3B7C3B7C3B7
set group_concat_max_len= 1022 + 6;
select @x:=group_concat(x) from t1 group by y;
select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
1028 1027 1025 aaaaaaaaa,÷÷ 612CC3B7C3B7
set group_concat_max_len= 1022 + 5;
select @x:=group_concat(x) from t1 group by y;
select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
1027 1027 1025 aaaaaaaaa,÷÷ 612CC3B7C3B7
set group_concat_max_len= 1022 + 4;
select @x:=group_concat(x) from t1 group by y;
select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
1026 1025 1024 aaaaaaaaaa,÷ 6161612CC3B7
set group_concat_max_len= 1022 + 3;
select @x:=group_concat(x) from t1 group by y;
select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
1025 1025 1024 aaaaaaaaaa,÷ 6161612CC3B7
set group_concat_max_len= 1022 + 2;
select @x:=group_concat(x) from t1 group by y;
select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
1024 1023 1023 aaaaaaaaaaa, 61616161612C
set group_concat_max_len= 1022 + 1;
select @x:=group_concat(x) from t1 group by y;
select @@group_concat_max_len, length(@x), char_length(@x), right(@x,12), right(HEX(@x),12);
@@group_concat_max_len length(@x) char_length(@x) right(@x,12) right(HEX(@x),12)
1023 1023 1023 aaaaaaaaaaa, 61616161612C
drop table t1;
set group_concat_max_len=1024;
set names latin1;
create table t1 (f1 int unsigned, f2 varchar(255));
insert into t1 values (1,repeat('a',255)),(2,repeat('b',255));
select f2,group_concat(f1) from t1 group by f2;
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def test t1 t1 f2 f2 253 255 255 Y 0 0 8
def group_concat(f1) 252 1024 1 Y 128 0 63
f2 group_concat(f1)
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 1
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 2
drop table t1;
CREATE TABLE t1(a TEXT, b CHAR(20));
INSERT INTO t1 VALUES ("one.1","one.1"),("two.2","two.2"),("one.3","one.3");
SELECT GROUP_CONCAT(DISTINCT UCASE(a)) FROM t1;
GROUP_CONCAT(DISTINCT UCASE(a))
ONE.1,TWO.2,ONE.3
SELECT GROUP_CONCAT(DISTINCT UCASE(b)) FROM t1;
GROUP_CONCAT(DISTINCT UCASE(b))
ONE.1,TWO.2,ONE.3
DROP TABLE t1;
End of 5.0 tests
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