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1262 lines
52 KiB
1262 lines
52 KiB
drop table if exists t1, t2;
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create table t1 (grp int, a bigint unsigned, c char(10) not null, d char(10) not null);
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insert into t1 values (1,1,"a","a");
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insert into t1 values (2,2,"b","a");
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insert into t1 values (2,3,"c","b");
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insert into t1 values (3,4,"E","a");
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insert into t1 values (3,5,"C","b");
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insert into t1 values (3,6,"D","b");
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insert into t1 values (3,7,"d","d");
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insert into t1 values (3,8,"d","d");
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insert into t1 values (3,9,"D","c");
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select grp,group_concat(c) from t1 group by grp;
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grp group_concat(c)
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1 a
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2 b,c
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3 E,C,D,d,d,D
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explain select grp,group_concat(c) from t1 group by grp;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 9 100.00 Using filesort
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`grp` AS `grp`,group_concat(`test`.`t1`.`c` separator ',') AS `group_concat(c)` from `test`.`t1` group by `test`.`t1`.`grp`
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select grp,group_concat(a,c) from t1 group by grp;
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grp group_concat(a,c)
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1 1a
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2 2b,3c
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3 4E,5C,6D,7d,8d,9D
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select grp,group_concat("(",a,":",c,")") from t1 group by grp;
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grp group_concat("(",a,":",c,")")
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1 (1:a)
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2 (2:b),(3:c)
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3 (4:E),(5:C),(6:D),(7:d),(8:d),(9:D)
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select grp,group_concat(c separator ",") from t1 group by grp;
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grp group_concat(c separator ",")
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1 a
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2 b,c
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3 E,C,D,d,d,D
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select grp,group_concat(c separator "---->") from t1 group by grp;
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grp group_concat(c separator "---->")
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1 a
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2 b---->c
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3 E---->C---->D---->d---->d---->D
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select grp,group_concat(c order by c) from t1 group by grp;
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grp group_concat(c order by c)
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1 a
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2 b,c
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3 C,D,d,d,D,E
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select grp,group_concat(c order by c desc) from t1 group by grp;
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grp group_concat(c order by c desc)
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1 a
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2 c,b
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3 E,D,d,d,D,C
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select grp,group_concat(d order by a) from t1 group by grp;
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grp group_concat(d order by a)
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1 a
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2 a,b
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3 a,b,b,d,d,c
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select grp,group_concat(d order by a desc) from t1 group by grp;
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grp group_concat(d order by a desc)
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1 a
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2 b,a
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3 c,d,d,b,b,a
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select grp,group_concat(a order by a,d+c-ascii(c)-a) from t1 group by grp;
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grp group_concat(a order by a,d+c-ascii(c)-a)
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1 1
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2 2,3
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3 4,5,6,7,8,9
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select grp,group_concat(a order by d+c-ascii(c),a) from t1 group by grp;
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grp group_concat(a order by d+c-ascii(c),a)
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1 1
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2 3,2
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3 7,8,4,6,9,5
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select grp,group_concat(c order by 1) from t1 group by grp;
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grp group_concat(c order by 1)
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1 a
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2 b,c
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3 C,D,d,d,D,E
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select grp,group_concat(distinct c order by c) from t1 group by grp;
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grp group_concat(distinct c order by c)
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1 a
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2 b,c
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3 C,D,E
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select grp,group_concat(distinct c order by c desc) from t1 group by grp;
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grp group_concat(distinct c order by c desc)
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1 a
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2 c,b
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3 E,D,C
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explain select grp,group_concat(distinct c order by c desc) from t1 group by grp;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 9 100.00 Using filesort
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Warnings:
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Note 1003 /* select#1 */ 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`
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select grp,group_concat(c order by c separator ",") from t1 group by grp;
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grp group_concat(c order by c separator ",")
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1 a
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2 b,c
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3 C,D,d,d,D,E
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select grp,group_concat(c order by c desc separator ",") from t1 group by grp;
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grp group_concat(c order by c desc separator ",")
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1 a
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2 c,b
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3 E,D,d,d,D,C
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select grp,group_concat(distinct c order by c separator ",") from t1 group by grp;
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grp group_concat(distinct c order by c separator ",")
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1 a
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2 b,c
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3 C,D,E
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explain select grp,group_concat(distinct c order by c separator ",") from t1 group by grp;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 9 100.00 Using filesort
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Warnings:
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Note 1003 /* select#1 */ 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`
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select grp,group_concat(distinct c order by c desc separator ",") from t1 group by grp;
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grp group_concat(distinct c order by c desc separator ",")
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1 a
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2 c,b
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3 E,D,C
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select grp,group_concat(c order by grp desc) from t1 group by grp order by grp;
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grp group_concat(c order by grp desc)
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1 a
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2 c,b
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3 D,d,d,D,C,E
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select grp, group_concat(a separator "")+0 from t1 group by grp;
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grp group_concat(a separator "")+0
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1 1
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2 23
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3 456789
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select grp, group_concat(a separator "")+0.0 from t1 group by grp;
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grp group_concat(a separator "")+0.0
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1 1.0
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2 23.0
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3 456789.0
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select grp, ROUND(group_concat(a separator "")) from t1 group by grp;
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grp ROUND(group_concat(a separator ""))
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1 1
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2 23
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3 456789
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drop table t1;
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create table t1 (grp int, c char(10));
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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);
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select grp,group_concat(c order by c) from t1 group by grp;
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grp group_concat(c order by c)
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1 NULL
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2 b
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3 D,D,E
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4
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5 NULL
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set group_concat_max_len = 4;
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select grp,group_concat(c order by c) from t1 group by grp;
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grp group_concat(c order by c)
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1 NULL
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2 b
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3 D,D,
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4
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5 NULL
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Warnings:
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Warning 1260 Row 4 was cut by GROUP_CONCAT()
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show warnings;
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Level Code Message
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Warning 1260 Row 4 was cut by GROUP_CONCAT()
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set group_concat_max_len = 1024;
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select group_concat(sum(c)) from t1 group by grp;
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ERROR HY000: Invalid use of group function
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select grp,group_concat(c order by 2) from t1 group by grp;
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ERROR 42S22: Unknown column '2' in 'order clause'
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drop table t1;
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create table t1 ( URL_ID int(11), URL varchar(80));
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Warnings:
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Warning 1681 Integer display width is deprecated and will be removed in a future release.
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create table t2 ( REQ_ID int(11), URL_ID int(11));
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Warnings:
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Warning 1681 Integer display width is deprecated and will be removed in a future release.
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Warning 1681 Integer display width is deprecated and will be removed in a future release.
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insert into t1 values (4,'www.host.com'), (5,'www.google.com'),(5,'www.help.com');
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insert into t2 values (1,4), (5,4), (5,5);
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select REQ_ID, Group_Concat(URL) as URL from t1, t2 where
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t2.URL_ID = t1.URL_ID group by REQ_ID;
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REQ_ID URL
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1 X
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5 X,X,X
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select REQ_ID, Group_Concat(URL) as URL, Min(t1.URL_ID) urll,
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Max(t1.URL_ID) urlg from t1, t2 where t2.URL_ID = t1.URL_ID group by REQ_ID;
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REQ_ID URL urll urlg
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1 X 4 4
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5 X,X,X 4 5
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drop table t1;
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drop table t2;
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create table t1 (id int, name varchar(16));
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insert into t1 values (1,'longername'),(1,'evenlongername');
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select ifnull(group_concat(concat(t1.id, ':', t1.name)), 'shortname') as 'without distinct: how it should be' from t1;
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without distinct: how it should be
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1:longername,1:evenlongername
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select distinct ifnull(group_concat(concat(t1.id, ':', t1.name)), 'shortname') as 'with distinct: cutoff at length of shortname' from t1;
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with distinct: cutoff at length of shortname
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1:longername,1:evenlongername
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drop table t1;
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create table t1(id int);
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create table t2(id int);
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insert into t1 values(0),(1);
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select group_concat(t1.id) FROM t1,t2;
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group_concat(t1.id)
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NULL
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drop table t1;
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drop table t2;
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create table t1 (bar varchar(32));
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insert into t1 values('test1'),('test2');
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select group_concat(bar order by concat(bar,bar)) from t1;
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group_concat(bar order by concat(bar,bar))
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test1,test2
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select group_concat(bar order by concat(bar,bar) desc) from t1;
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group_concat(bar order by concat(bar,bar) desc)
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test2,test1
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select bar from t1 having group_concat(bar)='';
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bar
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select bar from t1 having instr(group_concat(bar), "test") > 0;
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bar
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test1
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select bar from t1 having instr(group_concat(bar order by concat(bar,bar) desc), "test2,test1") > 0;
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bar
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test1
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drop table t1;
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create table t1 (a int, a1 varchar(10));
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create table t2 (a0 int);
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insert into t1 values (0,"a"),(0,"b"),(1,"c");
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insert into t2 values (1),(2),(3);
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select group_concat(a1 order by (t1.a IN (select a0 from t2))) from t1;
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group_concat(a1 order by (t1.a IN (select a0 from t2)))
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b,a,c
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select group_concat(a1 order by (t1.a)) from t1;
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group_concat(a1 order by (t1.a))
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b,a,c
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drop table t1, t2;
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CREATE TABLE t1 (id1 tinyint(4) NOT NULL, id2 tinyint(4) NOT NULL);
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Warnings:
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Warning 1681 Integer display width is deprecated and will be removed in a future release.
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Warning 1681 Integer display width is deprecated and will be removed in a future release.
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INSERT INTO t1 VALUES (1, 1),(1, 2),(1, 3),(1, 4),(1, 5),(2, 1),(2, 2),(2, 3);
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CREATE TABLE t2 (id1 tinyint(4) NOT NULL);
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Warnings:
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Warning 1681 Integer display width is deprecated and will be removed in a future release.
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INSERT INTO t2 VALUES (1),(2),(3),(4),(5);
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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;
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id1 concat_id
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1 1,2,3,4,5
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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;
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id1 concat_id
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1 1,2,3,4,5
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2 1,2,3
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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;
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id1 concat_id
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1 5,4,3,2,1
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2 3,2,1
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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;
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id1 concat_id
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1 5,4,3,2,1
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2 3,2,1
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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;
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id1 concat_id
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1 51,42,33,24,15
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2 33,24,15
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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;
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id1 concat_id
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1 51,42,33,24,15
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2 33,24,15
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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;
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id1 concat_id
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1 5/1,4/2,3/3,2/4,1/5
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2 3/3,2/4,1/5
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drop table t1,t2;
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create table t1 (s1 char(10), s2 int not null);
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insert into t1 values ('a',2),('b',2),('c',1),('a',3),('b',4),('c',4);
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select distinct s1 from t1 order by s2,s1;
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s1
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c
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a
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b
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select group_concat(distinct s1) from t1;
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group_concat(distinct s1)
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a,b,c
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select group_concat(distinct s1 order by s2) from t1 where s2 < 4;
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group_concat(distinct s1 order by s2)
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c,b,a
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select group_concat(distinct s1 order by s2) from t1;
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group_concat(distinct s1 order by s2)
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c,b,a
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drop table t1;
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create table t1 (a int, c int);
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insert into t1 values (1, 2), (2, 3), (2, 4), (3, 5);
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create table t2 (a int, c int);
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insert into t2 values (1, 5), (2, 4), (3, 3), (3,3);
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select group_concat(c) from t1;
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group_concat(c)
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2,3,4,5
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select group_concat(c order by (select c from t2 where t2.a=t1.a limit 1)) as grp from t1;
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grp
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5,4,3,2
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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;
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grp
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5,4,3,2
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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;
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grp
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2,4,3,5
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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;
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a grp
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1 2
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2 4,3
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3 5
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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;
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a grp
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1 2
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2 4,3
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3 5
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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;
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a grp
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1 2
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2 4,3
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3 5
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select group_concat(c order by (select concat(5-t1.c,group_concat(c order by a)) from t2 where t2.a=t1.a)) as grp from t1;
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grp
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5,4,3,2
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select group_concat(c order by (select concat(t1.c,group_concat(c)) from t2 where a=t1.a)) as grp from t1;
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grp
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2,3,4,5
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select a,c,(select group_concat(c order by a) from t2 where a=t1.a) as grp from t1 order by grp;
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a c grp
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3 5 3,3
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2 3 4
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2 4 4
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1 2 5
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drop table t1,t2;
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CREATE TABLE t1 ( a int );
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CREATE TABLE t2 ( a int );
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INSERT INTO t1 VALUES (1), (2);
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INSERT INTO t2 VALUES (1), (2);
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SELECT GROUP_CONCAT(t1.a*t2.a ORDER BY t2.a) FROM t1, t2 GROUP BY t1.a;
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GROUP_CONCAT(t1.a*t2.a ORDER BY t2.a)
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1,2
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2,4
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DROP TABLE t1, t2;
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CREATE TABLE t1 (a char(4));
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INSERT INTO t1 VALUES ('John'), ('Anna'), ('Bill');
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SELECT GROUP_CONCAT(a SEPARATOR '||') AS names FROM t1
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HAVING names LIKE '%An%';
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names
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John||Anna||Bill
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SELECT GROUP_CONCAT(a SEPARATOR '###') AS names FROM t1
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HAVING LEFT(names, 1) ='J';
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names
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John###Anna###Bill
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DROP TABLE t1;
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CREATE TABLE t1 ( a int, b TEXT );
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INSERT INTO t1 VALUES (1,'First Row'), (2,'Second Row');
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SELECT GROUP_CONCAT(b ORDER BY b) FROM t1 GROUP BY a;
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GROUP_CONCAT(b ORDER BY b)
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First Row
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Second Row
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DROP TABLE t1;
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CREATE TABLE t1 (A_ID INT NOT NULL,A_DESC CHAR(3) NOT NULL,PRIMARY KEY (A_ID));
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INSERT INTO t1 VALUES (1,'ABC'), (2,'EFG'), (3,'HIJ');
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CREATE TABLE t2 (A_ID INT NOT NULL,B_DESC CHAR(3) NOT NULL,PRIMARY KEY (A_ID,B_DESC));
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INSERT INTO t2 VALUES (1,'A'),(1,'B'),(3,'F');
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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;
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A_ID B_DESC
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1 A,B
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2 NULL
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3 F
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DROP TABLE t1;
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DROP TABLE t2;
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create table t1 (a int, b text);
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insert into t1 values (1, 'bb'), (1, 'ccc'), (1, 'a'), (1, 'bb'), (1, 'ccc');
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insert into t1 values (2, 'BB'), (2, 'CCC'), (2, 'A'), (2, 'BB'), (2, 'CCC');
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select group_concat(b) from t1 group by a;
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group_concat(b)
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bb,ccc,a,bb,ccc
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BB,CCC,A,BB,CCC
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select group_concat(distinct b) from t1 group by a;
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group_concat(distinct b)
|
|
a,bb,ccc
|
|
A,BB,CCC
|
|
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 Row 2 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 4 was cut by GROUP_CONCAT()
|
|
select group_concat(distinct b) from t1 group by a;
|
|
group_concat(distinct b)
|
|
a,bb
|
|
A,BB
|
|
Warnings:
|
|
Warning 1260 Row 3 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 6 was 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 Row 3 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 6 was 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 Row 3 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 6 was 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)
|
|
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,a,bb,ccc
|
|
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112,A,BB,CCC
|
|
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 Row 7 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 14 was cut by GROUP_CONCAT()
|
|
select group_concat(distinct b) from t1 group by a;
|
|
group_concat(distinct b)
|
|
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
|
|
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001,11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
|
|
Warnings:
|
|
Warning 1260 Row 2 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 4 was 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 Row 2 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 4 was 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 Row 2 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 4 was 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=ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
|
|
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 ('À');
|
|
SELECT a FROM t1;
|
|
a
|
|
À
|
|
SELECT GROUP_CONCAT(a) FROM t1;
|
|
GROUP_CONCAT(a)
|
|
À
|
|
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(b) from t2) from t2;
|
|
x (select group_concat(b) from t2)
|
|
1 1,2
|
|
2 1,2
|
|
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 partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 8 100.00 Using filesort
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,group_concat(`test`.`t1`.`b` separator ',') AS `group_concat(b)` from `test`.`t1` group by `test`.`t1`.`a` with rollup
|
|
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 1,2,3,4
|
|
2 3,7
|
|
NULL 1,2,3,4,7
|
|
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)
|
|
);
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
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)
|
|
);
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
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 1020 255 Y 0 0 255
|
|
def group_concat(f1) 253 1600 1 Y 0 0 255
|
|
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)
|
|
utf8mb4
|
|
select charset(a) from t3;
|
|
charset(a)
|
|
utf8mb4
|
|
utf8mb4
|
|
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))
|
|
utf8mb4
|
|
drop table t1;
|
|
CREATE TABLE t1 (a INT(10), b LONGTEXT, PRIMARY KEY (a));
|
|
Warnings:
|
|
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
|
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;
|
|
Warnings:
|
|
Warning 3719 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
|
|
create table t1
|
|
(
|
|
x text character set utf8 not null,
|
|
y integer not null
|
|
);
|
|
Warnings:
|
|
Warning 3719 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
|
|
insert into t1 values (repeat('a', 1022), 0), (repeat(_utf8 0xc3b7, 4), 0);
|
|
Warnings:
|
|
Warning 3719 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
|
|
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) 251 1024 1 Y 0 0 8
|
|
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,ONE.3,TWO.2
|
|
SELECT GROUP_CONCAT(DISTINCT UCASE(b)) FROM t1;
|
|
GROUP_CONCAT(DISTINCT UCASE(b))
|
|
ONE.1,ONE.3,TWO.2
|
|
DROP TABLE t1;
|
|
CREATE TABLE t1( a VARCHAR( 10 ), b INT );
|
|
INSERT INTO t1 VALUES ( repeat( 'a', 10 ), 1),
|
|
( repeat( 'b', 10 ), 2);
|
|
SET group_concat_max_len = 20;
|
|
SELECT GROUP_CONCAT( a ) FROM t1;
|
|
GROUP_CONCAT( a )
|
|
aaaaaaaaaa,bbbbbbbbb
|
|
Warnings:
|
|
Warning 1260 Row 2 was cut by GROUP_CONCAT()
|
|
SELECT GROUP_CONCAT( DISTINCT a ) FROM t1;
|
|
GROUP_CONCAT( DISTINCT a )
|
|
aaaaaaaaaa,bbbbbbbbb
|
|
Warnings:
|
|
Warning 1260 Row 2 was cut by GROUP_CONCAT()
|
|
SELECT GROUP_CONCAT( a ORDER BY b ) FROM t1;
|
|
GROUP_CONCAT( a ORDER BY b )
|
|
aaaaaaaaaa,bbbbbbbbb
|
|
Warnings:
|
|
Warning 1260 Row 2 was cut by GROUP_CONCAT()
|
|
SELECT GROUP_CONCAT( DISTINCT a ORDER BY b ) FROM t1;
|
|
GROUP_CONCAT( DISTINCT a ORDER BY b )
|
|
aaaaaaaaaa,bbbbbbbbb
|
|
Warnings:
|
|
Warning 1260 Row 2 was cut by GROUP_CONCAT()
|
|
SET group_concat_max_len = DEFAULT;
|
|
DROP TABLE t1;
|
|
SET group_concat_max_len= 65535;
|
|
CREATE TABLE t1( a TEXT, b INTEGER );
|
|
INSERT INTO t1 VALUES ( 'a', 0 ), ( 'b', 1 );
|
|
SELECT GROUP_CONCAT( a ORDER BY b ) FROM t1;
|
|
GROUP_CONCAT( a ORDER BY b )
|
|
a,b
|
|
SELECT GROUP_CONCAT(DISTINCT a ORDER BY b) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a ORDER BY b)
|
|
a,b
|
|
SELECT GROUP_CONCAT(DISTINCT a) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a)
|
|
a,b
|
|
SET group_concat_max_len= 10;
|
|
SELECT GROUP_CONCAT(a ORDER BY b) FROM t1;
|
|
GROUP_CONCAT(a ORDER BY b)
|
|
a,b
|
|
SELECT GROUP_CONCAT(DISTINCT a ORDER BY b) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a ORDER BY b)
|
|
a,b
|
|
SELECT GROUP_CONCAT(DISTINCT a) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a)
|
|
a,b
|
|
SET group_concat_max_len= 65535;
|
|
CREATE TABLE t2( a TEXT );
|
|
INSERT INTO t2 VALUES( REPEAT( 'a', 5000 ) );
|
|
INSERT INTO t2 VALUES( REPEAT( 'b', 5000 ) );
|
|
INSERT INTO t2 VALUES( REPEAT( 'a', 5000 ) );
|
|
SELECT LENGTH( GROUP_CONCAT( DISTINCT a ) ) FROM t2;
|
|
LENGTH( GROUP_CONCAT( DISTINCT a ) )
|
|
10001
|
|
CREATE TABLE t3( a TEXT, b INT );
|
|
INSERT INTO t3 VALUES( REPEAT( 'a', 65534 ), 1 );
|
|
INSERT INTO t3 VALUES( REPEAT( 'a', 65535 ), 2 );
|
|
INSERT IGNORE INTO t3 VALUES( REPEAT( 'a', 65536 ), 3 );
|
|
Warnings:
|
|
Warning 1265 Data truncated for column 'a' at row 1
|
|
SELECT LENGTH( GROUP_CONCAT( a ) ) FROM t3 WHERE b = 1;
|
|
LENGTH( GROUP_CONCAT( a ) )
|
|
65534
|
|
SELECT LENGTH( GROUP_CONCAT( a ) ) FROM t3 WHERE b = 2;
|
|
LENGTH( GROUP_CONCAT( a ) )
|
|
65535
|
|
SELECT LENGTH( GROUP_CONCAT( a ) ) FROM t3 WHERE b = 3;
|
|
LENGTH( GROUP_CONCAT( a ) )
|
|
65535
|
|
SET group_concat_max_len= DEFAULT;
|
|
DROP TABLE t1, t2, t3;
|
|
set names latin1;
|
|
create table t1 (id int, name varchar(20)) DEFAULT CHARSET=utf8;
|
|
Warnings:
|
|
Warning 3719 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
|
|
insert into t1 (id, name) values (1, "óra");
|
|
insert into t1 (id, name) values (2, "óra");
|
|
select b.id, group_concat(b.name) from t1 a, t1 b group by b.id;
|
|
id group_concat(b.name)
|
|
1 óra,óra
|
|
2 óra,óra
|
|
drop table t1;
|
|
create table t1(a bit not null);
|
|
insert ignore into t1 values (), (), ();
|
|
Warnings:
|
|
Warning 1364 Field 'a' doesn't have a default value
|
|
select group_concat(distinct a) from t1;
|
|
group_concat(distinct a)
|
|
0
|
|
select group_concat(distinct a order by a) from t1;
|
|
group_concat(distinct a order by a)
|
|
0
|
|
drop table t1;
|
|
create table t1(a bit(2) not null);
|
|
insert into t1 values (1), (0), (0), (3), (1);
|
|
select group_concat(distinct a) from t1;
|
|
group_concat(distinct a)
|
|
0,1,3
|
|
select group_concat(distinct a order by a) from t1;
|
|
group_concat(distinct a order by a)
|
|
0,1,3
|
|
select group_concat(distinct a order by a desc) from t1;
|
|
group_concat(distinct a order by a desc)
|
|
3,1,0
|
|
drop table t1;
|
|
create table t1(a bit(2), b varchar(10), c bit);
|
|
insert into t1 values (1, 'a', 0), (0, 'b', 1), (0, 'c', 0), (3, 'd', 1),
|
|
(1, 'e', 1), (3, 'f', 1), (0, 'g', 1);
|
|
select group_concat(distinct a, c) from t1;
|
|
group_concat(distinct a, c)
|
|
00,01,10,11,31
|
|
select group_concat(distinct a, c order by a) from t1;
|
|
group_concat(distinct a, c order by a)
|
|
00,01,11,10,31
|
|
select group_concat(distinct a, c) from t1;
|
|
group_concat(distinct a, c)
|
|
00,01,10,11,31
|
|
select group_concat(distinct a, c order by a, c) from t1;
|
|
group_concat(distinct a, c order by a, c)
|
|
00,01,10,11,31
|
|
select group_concat(distinct a, c order by a desc, c desc) from t1;
|
|
group_concat(distinct a, c order by a desc, c desc)
|
|
31,11,10,01,00
|
|
drop table t1;
|
|
create table t1 (f1 char(20));
|
|
insert into t1 values (''),('');
|
|
select group_concat(distinct f1) from t1;
|
|
group_concat(distinct f1)
|
|
|
|
select group_concat(f1) from t1;
|
|
group_concat(f1)
|
|
,
|
|
drop table t1;
|
|
CREATE TABLE t1 (a INT, b INT);
|
|
INSERT INTO t1 VALUES (1, 1), (2, 2), (2, 3);
|
|
SELECT GROUP_CONCAT(DISTINCT a ORDER BY b) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a ORDER BY b)
|
|
1,2
|
|
SELECT GROUP_CONCAT(DISTINCT a ORDER BY b DESC) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a ORDER BY b DESC)
|
|
2,1
|
|
SELECT GROUP_CONCAT(DISTINCT a) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a)
|
|
1,2
|
|
SELECT GROUP_CONCAT(DISTINCT a + 1 ORDER BY 3 - b) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a + 1 ORDER BY 3 - b)
|
|
3,2
|
|
SELECT GROUP_CONCAT(DISTINCT a + 1 ORDER BY b) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a + 1 ORDER BY b)
|
|
2,3
|
|
SELECT GROUP_CONCAT(a ORDER BY 3 - b) FROM t1;
|
|
GROUP_CONCAT(a ORDER BY 3 - b)
|
|
2,2,1
|
|
CREATE TABLE t2 (a INT, b INT, c INT, d INT);
|
|
INSERT INTO t2 VALUES (1,1, 1,1), (1,1, 2,2), (1,2, 2,1), (2,1, 1,2);
|
|
SELECT GROUP_CONCAT(DISTINCT a, b ORDER BY c, d) FROM t2;
|
|
GROUP_CONCAT(DISTINCT a, b ORDER BY c, d)
|
|
11,21,12
|
|
SELECT GROUP_CONCAT(DISTINCT a, b ORDER BY d, c) FROM t2;
|
|
GROUP_CONCAT(DISTINCT a, b ORDER BY d, c)
|
|
11,12,21
|
|
CREATE TABLE t3 (a INT, b INT, c INT);
|
|
INSERT INTO t3 VALUES (1, 1, 1), (2, 1, 2), (3, 2, 1);
|
|
SELECT GROUP_CONCAT(DISTINCT a, b ORDER BY b, c) FROM t3;
|
|
GROUP_CONCAT(DISTINCT a, b ORDER BY b, c)
|
|
11,21,32
|
|
SELECT GROUP_CONCAT(DISTINCT a, b ORDER BY c, b) FROM t3;
|
|
GROUP_CONCAT(DISTINCT a, b ORDER BY c, b)
|
|
11,32,21
|
|
SELECT GROUP_CONCAT(DISTINCT a, b ORDER BY a, b) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a, b ORDER BY a, b)
|
|
11,22,23
|
|
SELECT GROUP_CONCAT(DISTINCT b, a ORDER BY a, b) FROM t1;
|
|
GROUP_CONCAT(DISTINCT b, a ORDER BY a, b)
|
|
11,22,32
|
|
SELECT GROUP_CONCAT(DISTINCT a, b ORDER BY b, a) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a, b ORDER BY b, a)
|
|
11,22,23
|
|
SELECT GROUP_CONCAT(DISTINCT b, a ORDER BY a, b) FROM t1;
|
|
GROUP_CONCAT(DISTINCT b, a ORDER BY a, b)
|
|
11,22,32
|
|
SELECT GROUP_CONCAT(DISTINCT a ORDER BY a, b) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a ORDER BY a, b)
|
|
1,2
|
|
SELECT GROUP_CONCAT(DISTINCT b ORDER BY b, a) FROM t1;
|
|
GROUP_CONCAT(DISTINCT b ORDER BY b, a)
|
|
1,2,3
|
|
SELECT GROUP_CONCAT(DISTINCT a, b ORDER BY a) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a, b ORDER BY a)
|
|
11,23,22
|
|
SELECT GROUP_CONCAT(DISTINCT b, a ORDER BY b) FROM t1;
|
|
GROUP_CONCAT(DISTINCT b, a ORDER BY b)
|
|
11,22,32
|
|
DROP TABLE t1, t2, t3;
|
|
CREATE TABLE t1(a INT);
|
|
INSERT INTO t1 VALUES (),();
|
|
SELECT s1.d1 FROM
|
|
(
|
|
SELECT
|
|
t1.a as d1,
|
|
GROUP_CONCAT(DISTINCT t1.a) AS d2
|
|
FROM
|
|
t1 AS t1,
|
|
t1 AS t2
|
|
GROUP BY 1
|
|
) AS s1;
|
|
d1
|
|
NULL
|
|
DROP TABLE t1;
|
|
CREATE TABLE t1 (a INT);
|
|
CREATE TABLE t2 (a INT);
|
|
INSERT INTO t1 VALUES(1);
|
|
SELECT GROUP_CONCAT(DISTINCT t2.a) FROM t1 LEFT JOIN t2 ON t2.a = t1.a GROUP BY t1.a;
|
|
GROUP_CONCAT(DISTINCT t2.a)
|
|
NULL
|
|
DROP TABLE t1, t2;
|
|
CREATE TABLE t1 (a INT, KEY(a));
|
|
CREATE TABLE t2 (b INT);
|
|
INSERT INTO t1 VALUES (NULL), (8), (2);
|
|
INSERT INTO t2 VALUES (4), (10);
|
|
SELECT 1 FROM t1 WHERE t1.a NOT IN
|
|
(
|
|
SELECT GROUP_CONCAT(DISTINCT t1.a)
|
|
FROM t1 WHERE t1.a IN
|
|
(
|
|
SELECT b FROM t2
|
|
)
|
|
AND NOT t1.a >= (SELECT t1.a FROM t1 LIMIT 1)
|
|
GROUP BY t1.a
|
|
);
|
|
1
|
|
1
|
|
1
|
|
1
|
|
DROP TABLE t1, t2;
|
|
CREATE TABLE t1 (f1 INT);
|
|
INSERT INTO t1 VALUES (),();
|
|
EXPLAIN SELECT 1 FROM
|
|
(SELECT DISTINCT GROUP_CONCAT(td.f1) FROM t1,t1 AS td GROUP BY td.f1) AS d,t1;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 4 100.00 Using join buffer (Block Nested Loop)
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort
|
|
2 DERIVED td NULL ALL NULL NULL NULL NULL 2 100.00 Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select 1 AS `1` from (/* select#2 */ select distinct group_concat(`test`.`td`.`f1` separator ',') AS `GROUP_CONCAT(td.f1)` from `test`.`t1` join `test`.`t1` `td` group by `test`.`td`.`f1`) `d` join `test`.`t1`
|
|
SELECT 1 FROM
|
|
(SELECT DISTINCT GROUP_CONCAT(td.f1) FROM t1,t1 AS td GROUP BY td.f1) AS d,t1;
|
|
1
|
|
1
|
|
1
|
|
DROP TABLE t1;
|
|
End of 5.0 tests
|
|
#
|
|
# Bug #52397: another crash with explain and group_concat
|
|
#
|
|
CREATE TABLE t1 (a INT);
|
|
INSERT INTO t1 VALUES (0), (0);
|
|
EXPLAIN SELECT 1 FROM
|
|
(SELECT GROUP_CONCAT(t1.a ORDER BY t1.a ASC) FROM
|
|
t1 t2, t1 GROUP BY t1.a) AS d;
|
|
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 4 100.00 NULL
|
|
2 DERIVED t2 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort
|
|
2 DERIVED t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using join buffer (Block Nested Loop)
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select 1 AS `1` from (/* select#2 */ select group_concat(`test`.`t1`.`a` order by `test`.`t1`.`a` ASC separator ',') AS `GROUP_CONCAT(t1.a ORDER BY t1.a ASC)` from `test`.`t1` `t2` join `test`.`t1` group by `test`.`t1`.`a`) `d`
|
|
DROP TABLE t1;
|
|
End of 5.0 tests
|
|
#
|
|
# Bug #54476: crash when group_concat and 'with rollup' in prepared statements
|
|
#
|
|
CREATE TABLE t1 (a INT);
|
|
INSERT INTO t1 VALUES (1), (2);
|
|
PREPARE stmt FROM "SELECT GROUP_CONCAT(t1.a ORDER BY t1.a) FROM t1 JOIN t1 t2 GROUP BY t1.a WITH ROLLUP";
|
|
EXECUTE stmt;
|
|
GROUP_CONCAT(t1.a ORDER BY t1.a)
|
|
1,1
|
|
2,2
|
|
1,1,2,2
|
|
EXECUTE stmt;
|
|
GROUP_CONCAT(t1.a ORDER BY t1.a)
|
|
1,1
|
|
2,2
|
|
1,1,2,2
|
|
DEALLOCATE PREPARE stmt;
|
|
DROP TABLE t1;
|
|
#
|
|
# Bug#57194 group_concat cause crash and/or invalid memory reads with type errors
|
|
#
|
|
CREATE TABLE t1(f1 int);
|
|
INSERT INTO t1 values (0),(0);
|
|
SELECT POLYGON((SELECT 1 FROM (SELECT 1 IN (GROUP_CONCAT(t1.f1)) FROM t1, t1 t GROUP BY t.f1 ) d));
|
|
ERROR 22007: Illegal non geometric '(select 1 from (select (1 = group_concat(`test`.`t1`.`f1` separator ',')) AS `1 IN (GROUP_CONCAT(t1.f1))` from `test`.`t1` join `test`.`t1` `t` group by `test`.`t`.`f1`) `d`)' value found during parsing
|
|
DROP TABLE t1;
|
|
#
|
|
# Bug#58396 group_concat and explain are still crashy
|
|
#
|
|
CREATE TABLE t1(a INT);
|
|
EXPLAIN SELECT UPDATEXML('1', a, '1')
|
|
FROM t1 ORDER BY (SELECT GROUP_CONCAT(1) FROM t1);
|
|
ERROR HY000: Only constant XPATH queries are supported
|
|
SHOW WARNINGS;
|
|
Level Code Message
|
|
Error 1105 Only constant XPATH queries are supported
|
|
DROP TABLE t1;
|
|
End of 5.1 tests
|
|
DROP TABLE IF EXISTS t1, t2;
|
|
CREATE TABLE t1 (a VARCHAR(6), b INT);
|
|
CREATE TABLE t2 (a VARCHAR(6), b INT);
|
|
INSERT INTO t1 VALUES ('111111', 1);
|
|
INSERT INTO t1 VALUES ('222222', 2);
|
|
INSERT INTO t1 VALUES ('333333', 3);
|
|
INSERT INTO t1 VALUES ('444444', 4);
|
|
INSERT INTO t1 VALUES ('555555', 5);
|
|
SET group_concat_max_len = 5;
|
|
SET @old_sql_mode = @@sql_mode, @@sql_mode = 'traditional';
|
|
SELECT GROUP_CONCAT(a), b FROM t1 GROUP BY b LIMIT 3;
|
|
GROUP_CONCAT(a) b
|
|
11111 1
|
|
22222 2
|
|
33333 3
|
|
Warnings:
|
|
Warning 1260 Row 1 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 2 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 3 was cut by GROUP_CONCAT()
|
|
INSERT INTO t2 SELECT GROUP_CONCAT(a), b FROM t1 GROUP BY b;
|
|
ERROR HY000: Row 1 was cut by GROUP_CONCAT()
|
|
UPDATE t1 SET a = '11111' WHERE b = 1;
|
|
UPDATE t1 SET a = '22222' WHERE b = 2;
|
|
INSERT INTO t2 SELECT GROUP_CONCAT(a), b FROM t1 GROUP BY b;
|
|
ERROR HY000: Row 3 was cut by GROUP_CONCAT()
|
|
SET group_concat_max_len = DEFAULT;
|
|
SET @@sql_mode = @old_sql_mode;
|
|
DROP TABLE t1, t2;
|
|
#
|
|
# WL#6098 Eliminate GROUP_CONCAT intermediate result limitation.
|
|
# Bug#13387020 GROUP_CONCAT WITH ORDER BY RESULTS ARE TRUNCATED.
|
|
#
|
|
SET group_concat_max_len= 9999999;
|
|
CREATE TABLE t1 (f1 LONGTEXT , f2 INTEGER);
|
|
INSERT INTO t1 VALUES (REPEAT('a', 500000), 0), (REPEAT('b', 500000), 1), (REPEAT('c', 500000), 2);
|
|
SELECT LENGTH(GROUP_CONCAT(f1 ORDER BY f2)) FROM t1;
|
|
LENGTH(GROUP_CONCAT(f1 ORDER BY f2))
|
|
1500002
|
|
SELECT LENGTH(GROUP_CONCAT(DISTINCT f1 ORDER BY f1 DESC)) FROM t1;
|
|
LENGTH(GROUP_CONCAT(DISTINCT f1 ORDER BY f1 DESC))
|
|
1500002
|
|
SELECT SUBSTRING(GROUP_CONCAT(DISTINCT f1 ORDER BY f1 DESC), 1, 5) FROM t1;
|
|
SUBSTRING(GROUP_CONCAT(DISTINCT f1 ORDER BY f1 DESC), 1, 5)
|
|
ccccc
|
|
SELECT LENGTH(GROUP_CONCAT(DISTINCT f1)) FROM t1;
|
|
LENGTH(GROUP_CONCAT(DISTINCT f1))
|
|
1500002
|
|
SELECT LENGTH(GROUP_CONCAT(UPPER(f1) ORDER BY f2)) FROM t1;
|
|
LENGTH(GROUP_CONCAT(UPPER(f1) ORDER BY f2))
|
|
1500002
|
|
SELECT LENGTH(GROUP_CONCAT(DISTINCT UPPER(f1) ORDER BY f1)) FROM t1;
|
|
LENGTH(GROUP_CONCAT(DISTINCT UPPER(f1) ORDER BY f1))
|
|
1500002
|
|
SELECT SUBSTRING(GROUP_CONCAT(DISTINCT UPPER(f1) ORDER BY f1), 1, 5) FROM t1;
|
|
SUBSTRING(GROUP_CONCAT(DISTINCT UPPER(f1) ORDER BY f1), 1, 5)
|
|
AAAAA
|
|
SELECT LENGTH(GROUP_CONCAT(DISTINCT UPPER(f1))) FROM t1;
|
|
LENGTH(GROUP_CONCAT(DISTINCT UPPER(f1)))
|
|
1500002
|
|
CREATE TABLE t2 SELECT GROUP_CONCAT(f1 order by f2) FROM t1;
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`GROUP_CONCAT(f1 order by f2)` longtext
|
|
) ENGINE=ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
|
|
DROP TABLE t2;
|
|
CREATE TABLE t2 SELECT GROUP_CONCAT(UPPER(f1) ORDER BY f2) FROM t1;
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`GROUP_CONCAT(UPPER(f1) ORDER BY f2)` longtext
|
|
) ENGINE=ENGINE DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
|
|
DROP TABLE t2;
|
|
SET group_concat_max_len= DEFAULT;
|
|
SELECT LENGTH(GROUP_CONCAT(f1 ORDER BY f2)) FROM t1;
|
|
LENGTH(GROUP_CONCAT(f1 ORDER BY f2))
|
|
1024
|
|
Warnings:
|
|
Warning 1260 Row 2 was cut by GROUP_CONCAT()
|
|
SET group_concat_max_len= 499999;
|
|
SELECT LENGTH(GROUP_CONCAT(f1 ORDER BY f2)) FROM t1 WHERE f2 = 0;
|
|
LENGTH(GROUP_CONCAT(f1 ORDER BY f2))
|
|
499999
|
|
Warnings:
|
|
Warning 1260 Row 1 was cut by GROUP_CONCAT()
|
|
SELECT LENGTH(GROUP_CONCAT(f1 ORDER BY f2)) FROM t1 GROUP BY f2;
|
|
LENGTH(GROUP_CONCAT(f1 ORDER BY f2))
|
|
499999
|
|
499999
|
|
499999
|
|
Warnings:
|
|
Warning 1260 Row 1 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 2 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 3 was cut by GROUP_CONCAT()
|
|
INSERT INTO t1 VALUES (REPEAT('a', 499999), 3), (REPEAT('b', 500000), 4);
|
|
SELECT LENGTH(GROUP_CONCAT(f1 ORDER BY f2)) FROM t1 GROUP BY f2;
|
|
LENGTH(GROUP_CONCAT(f1 ORDER BY f2))
|
|
499999
|
|
499999
|
|
499999
|
|
499999
|
|
499999
|
|
Warnings:
|
|
Warning 1260 Row 1 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 2 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 3 was cut by GROUP_CONCAT()
|
|
Warning 1260 Row 5 was cut by GROUP_CONCAT()
|
|
DROP TABLE t1;
|
|
SET group_concat_max_len= DEFAULT;
|
|
End of 5.6 tests
|
|
#
|
|
# Bug #25331425: DISTINCT CLAUSE DOES NOT WORK IN GROUP_CONCAT
|
|
#
|
|
CREATE TABLE t1 (a VARCHAR(1000), b INT);
|
|
INSERT INTO t1 VALUES ('a', 1), ('b', 2), ('a', 3), ('b', 5), ('c', 5);
|
|
SELECT GROUP_CONCAT(DISTINCT a) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a)
|
|
a,b,c
|
|
SELECT GROUP_CONCAT(DISTINCT a), b FROM t1 GROUP BY b;
|
|
GROUP_CONCAT(DISTINCT a) b
|
|
a 1
|
|
b 2
|
|
a 3
|
|
b,c 5
|
|
SET @@tmp_table_size=1024;
|
|
SELECT GROUP_CONCAT(DISTINCT a) FROM t1;
|
|
GROUP_CONCAT(DISTINCT a)
|
|
a,b,c
|
|
SELECT GROUP_CONCAT(DISTINCT a), b FROM t1 GROUP BY b;
|
|
GROUP_CONCAT(DISTINCT a) b
|
|
a 1
|
|
b 2
|
|
a 3
|
|
b,c 5
|
|
SET @@tmp_table_size=default;
|
|
DROP TABLE t1;
|
|
#
|
|
# Bug #25050090: LIMITATION @@GROUP_CONCAT_MAX_LEN IS NOT RESPECTED
|
|
#
|
|
SET group_concat_max_len= 50;
|
|
CREATE TABLE t1 (c VARCHAR(40) NULL DEFAULT NULL) CHARACTER SET utf8mb4;
|
|
CREATE TABLE t2 AS SELECT GROUP_CONCAT(t.c) as c FROM t1 t;
|
|
SHOW CREATE TABLE t2;
|
|
Table Create Table
|
|
t2 CREATE TABLE `t2` (
|
|
`c` varchar(50) DEFAULT NULL
|
|
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
|
|
CREATE TABLE t3 AS SELECT GROUP_CONCAT(t.c) as c
|
|
FROM t1 t
|
|
UNION
|
|
SELECT '' as c;
|
|
SHOW CREATE TABLE t3;
|
|
Table Create Table
|
|
t3 CREATE TABLE `t3` (
|
|
`c` varchar(50) DEFAULT NULL
|
|
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
|
|
INSERT INTO t1 VALUES ('abcdefghijk'), ('pqrstuvwxyz'), ('124567890'), ('010011000111');
|
|
INSERT INTO t1 VALUES ('abcdefghijk'), ('pqrstuvwxyz'), ('124567890'), ('010011000111');
|
|
SELECT GROUP_CONCAT(t.c) as c
|
|
FROM t1 t;
|
|
c
|
|
abcdefghijk,pqrstuvwxyz,124567890,010011000111,abc
|
|
Warnings:
|
|
Warning 1260 Row 5 was cut by GROUP_CONCAT()
|
|
SELECT GROUP_CONCAT(t.c) as c
|
|
FROM t1 t
|
|
UNION
|
|
SELECT '' as c;
|
|
c
|
|
abcdefghijk,pqrstuvwxyz,124567890,010011000111,abc
|
|
|
|
Warnings:
|
|
Warning 1260 Row 5 was cut by GROUP_CONCAT()
|
|
SET group_concat_max_len= DEFAULT;
|
|
DROP TABLE t1, t2, t3;
|
|
|