Linux ip-172-26-2-223 5.4.0-1018-aws #18-Ubuntu SMP Wed Jun 24 01:15:00 UTC 2020 x86_64
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: 172.26.2.223 | : 13.58.117.102
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8.1.13
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[ HOME SHELL ]
Name
Size
Permission
Action
1st.result
597
B
-rw-r--r--
acl_tables_errors_debug.result
8.93
KB
-rw-r--r--
alias.result
13.58
KB
-rw-r--r--
almost_full.result
1.11
KB
-rw-r--r--
alter_table-big.result
5.45
KB
-rw-r--r--
alter_table.result
154.41
KB
-rw-r--r--
analyze.result
3.69
KB
-rw-r--r--
ansi.result
1.92
KB
-rw-r--r--
archive-big.result
616
B
-rw-r--r--
archive.result
525.18
KB
-rw-r--r--
archive_bitfield.result
4.26
KB
-rw-r--r--
archive_debug.result
355
B
-rw-r--r--
archive_gis.result
25.98
KB
-rw-r--r--
archive_no_symlink.result
882
B
-rw-r--r--
archive_plugin.result
531
B
-rw-r--r--
archive_symlink.result
2.3
KB
-rw-r--r--
auth_rpl.result
1.85
KB
-rw-r--r--
auto_increment.result
12.11
KB
-rw-r--r--
backup.result
4.29
KB
-rw-r--r--
bench_count_distinct.result
557
B
-rw-r--r--
big_test.require
17
B
-rw-r--r--
bigint.result
23.33
KB
-rw-r--r--
binary.result
6.09
KB
-rw-r--r--
binary_to_hex.result
5.87
KB
-rw-r--r--
binlog_tx_isolation.result
1.71
KB
-rw-r--r--
blackhole.result
613
B
-rw-r--r--
blackhole_plugin.result
565
B
-rw-r--r--
bool.result
2.67
KB
-rw-r--r--
bootstrap.result
525
B
-rw-r--r--
bug12368203.result
2.77
KB
-rw-r--r--
bug12427262.result
1.86
KB
-rw-r--r--
bug12969156.result
952
B
-rw-r--r--
bug17076131.result
322
B
-rw-r--r--
bug33509.result
2.31
KB
-rw-r--r--
bug39022.result
1.2
KB
-rw-r--r--
bug46080.result
669
B
-rw-r--r--
bug46261.result
353
B
-rw-r--r--
bug46760.result
1.26
KB
-rw-r--r--
bug47671.result
287
B
-rw-r--r--
bug58669.result
480
B
-rw-r--r--
bulk_replace.result
281
B
-rw-r--r--
cache_innodb.result
6.96
KB
-rw-r--r--
case.result
10.63
KB
-rw-r--r--
case_insensitive_file_system.r...
46
B
-rw-r--r--
case_sensitive_file_system.req...
47
B
-rw-r--r--
cast.result
16.27
KB
-rw-r--r--
change_user.result
2.82
KB
-rw-r--r--
charset.result
2.14
KB
-rw-r--r--
check.result
2.05
KB
-rw-r--r--
check_auto_permission.result
261
B
-rw-r--r--
check_var_limit.require
8
B
-rw-r--r--
client_xml.result
2.38
KB
-rw-r--r--
comment_column.result
141.21
KB
-rw-r--r--
comment_column2.result
355.68
KB
-rw-r--r--
comment_index.result
173.32
KB
-rw-r--r--
comment_table.result
28.95
KB
-rw-r--r--
comments.result
2.34
KB
-rw-r--r--
commit.result
14.83
KB
-rw-r--r--
commit_1innodb.result
19.59
KB
-rw-r--r--
compare.result
5.07
KB
-rw-r--r--
compress.result
66.24
KB
-rw-r--r--
concurrent_innodb_safelog.resu...
32.01
KB
-rw-r--r--
concurrent_innodb_unsafelog.re...
31.74
KB
-rw-r--r--
condition_filter.result
2.17
KB
-rw-r--r--
connect.result
11.02
KB
-rw-r--r--
connect_debug.result
1.46
KB
-rw-r--r--
consistent_snapshot.result
1.14
KB
-rw-r--r--
constraints.result
2.56
KB
-rw-r--r--
count_distinct.result
8.04
KB
-rw-r--r--
count_distinct2.result
2.21
KB
-rw-r--r--
count_distinct3.result
278
B
-rw-r--r--
create-big.result
7.6
KB
-rw-r--r--
create.result
71.42
KB
-rw-r--r--
create_not_windows.result
961
B
-rw-r--r--
create_select_tmp.result
846
B
-rw-r--r--
create_w_max_indexes_64.result
84.46
KB
-rw-r--r--
csv.result
59.08
KB
-rw-r--r--
csv_alter_table.result
1.17
KB
-rw-r--r--
csv_not_null.result
1.93
KB
-rw-r--r--
ctype_ascii.result
2.5
KB
-rw-r--r--
ctype_big5.result
34.28
KB
-rw-r--r--
ctype_binary.result
82.78
KB
-rw-r--r--
ctype_collate.result
18.3
KB
-rw-r--r--
ctype_cp1250_ch.result
22.29
KB
-rw-r--r--
ctype_cp1251.result
96.48
KB
-rw-r--r--
ctype_cp932.result
996
B
-rw-r--r--
ctype_cp932_binlog_row.result
734
B
-rw-r--r--
ctype_cp932_binlog_stm.result
251.36
KB
-rw-r--r--
ctype_create.result
3.12
KB
-rw-r--r--
ctype_errors.result
1.66
KB
-rw-r--r--
ctype_eucjpms.result
400.48
KB
-rw-r--r--
ctype_euckr.result
435.54
KB
-rw-r--r--
ctype_filename.result
324
B
-rw-r--r--
ctype_filesystem.result
341
B
-rw-r--r--
ctype_gb18030.result
69.33
KB
-rw-r--r--
ctype_gb18030_binlog.result
909
B
-rw-r--r--
ctype_gb18030_conversion.resul...
1.17
MB
-rw-r--r--
ctype_gb18030_encoding_cn.resu...
41.39
KB
-rw-r--r--
ctype_gb18030_encoding_utf8.re...
40.64
KB
-rw-r--r--
ctype_gb18030_ligatures.result
24.81
KB
-rw-r--r--
ctype_gb2312.result
33.73
KB
-rw-r--r--
ctype_gbk.result
50.07
KB
-rw-r--r--
ctype_gbk_binlog.result
633
B
-rw-r--r--
ctype_hebrew.result
254
B
-rw-r--r--
ctype_latin1.result
119.29
KB
-rw-r--r--
ctype_latin1_de.result
15.74
KB
-rw-r--r--
ctype_latin2.result
13.71
KB
-rw-r--r--
ctype_latin2_ch.result
25.11
KB
-rw-r--r--
ctype_ldml.result
28.13
KB
-rw-r--r--
ctype_like_range.result
80.89
KB
-rw-r--r--
ctype_many.result
41.87
KB
-rw-r--r--
ctype_mb.result
2.13
KB
-rw-r--r--
ctype_recoding.result
9.6
KB
-rw-r--r--
ctype_sjis.result
195.81
KB
-rw-r--r--
ctype_tis620.result
101.02
KB
-rw-r--r--
ctype_uca.result
155.4
KB
-rw-r--r--
ctype_ucs.result
143.96
KB
-rw-r--r--
ctype_ucs2_def.result
1.05
KB
-rw-r--r--
ctype_ujis.result
365.3
KB
-rw-r--r--
ctype_ujis_ucs2.result
548.6
KB
-rw-r--r--
ctype_utf16.result
47.3
KB
-rw-r--r--
ctype_utf16_def.result
273
B
-rw-r--r--
ctype_utf16_uca.result
72.47
KB
-rw-r--r--
ctype_utf16le.result
52.96
KB
-rw-r--r--
ctype_utf32.result
50.55
KB
-rw-r--r--
ctype_utf32_uca.result
75.29
KB
-rw-r--r--
ctype_utf8.result
169.69
KB
-rw-r--r--
ctype_utf8mb4.result
83.57
KB
-rw-r--r--
ctype_utf8mb4_heap.result
75.01
KB
-rw-r--r--
ctype_utf8mb4_innodb.result
77.85
KB
-rw-r--r--
ctype_utf8mb4_myisam.result
77.43
KB
-rw-r--r--
ctype_utf8mb4_uca.result
38.82
KB
-rw-r--r--
daemonize_opt.result
14
B
-rw-r--r--
datadir_permission.result
1.09
KB
-rw-r--r--
date_formats.result
28.69
KB
-rw-r--r--
ddl_i18n_koi8r.result
123.56
KB
-rw-r--r--
ddl_i18n_utf8.result
126.58
KB
-rw-r--r--
deadlock_innodb.result
2.35
KB
-rw-r--r--
debug_sync.result
12.18
KB
-rw-r--r--
debug_sync2.result
1.15
KB
-rw-r--r--
default.result
8.17
KB
-rw-r--r--
delete.result
22.7
KB
-rw-r--r--
delete_all_rows.result
2.26
KB
-rw-r--r--
deprecate_eof.result
8
KB
-rw-r--r--
deprecated_features.result
2.03
KB
-rw-r--r--
derived.result
172.18
KB
-rw-r--r--
dirty_close.result
345
B
-rw-r--r--
disabled_replication.result
4.82
KB
-rw-r--r--
disabled_storage_engines.resul...
3.28
KB
-rw-r--r--
disconnect_on_expired_password...
1.42
KB
-rw-r--r--
disconnect_on_expired_password...
1.49
KB
-rw-r--r--
distinct.result
80.43
KB
-rw-r--r--
drop-no_root.result
454
B
-rw-r--r--
drop.result
6.71
KB
-rw-r--r--
drop_debug.result
485
B
-rw-r--r--
ds_mrr-big.result
2.93
KB
-rw-r--r--
dynamic_tracing.result
813
B
-rw-r--r--
empty_table.result
229
B
-rw-r--r--
enable_cleartext_plugin.result
1.4
KB
-rw-r--r--
endspace.result
7.25
KB
-rw-r--r--
eq_range_idx_stat.result
6.56
KB
-rw-r--r--
error_simulation.result
3.17
KB
-rw-r--r--
errors.result
6.11
KB
-rw-r--r--
events_1.result
28.3
KB
-rw-r--r--
events_2.result
17.79
KB
-rw-r--r--
events_and_binlog.result
297
B
-rw-r--r--
events_bugs.result
40.94
KB
-rw-r--r--
events_embedded.result
86
B
-rw-r--r--
events_grant.result
10.33
KB
-rw-r--r--
events_logs_tests.result
2.37
KB
-rw-r--r--
events_microsec.result
810
B
-rw-r--r--
events_restart.result
4.36
KB
-rw-r--r--
events_scheduling.result
3.11
KB
-rw-r--r--
events_stress.result
2.39
KB
-rw-r--r--
events_time_zone.result
5.4
KB
-rw-r--r--
events_trans.result
3.61
KB
-rw-r--r--
events_trans_notembedded.resul...
1.88
KB
-rw-r--r--
examined_rows.result
6.73
KB
-rw-r--r--
execution_constants.result
1.03
KB
-rw-r--r--
explain.result
39.39
KB
-rw-r--r--
explain_for_connection_crash.r...
1004
B
-rw-r--r--
explain_for_connection_rqg_jso...
87.48
KB
-rw-r--r--
explain_for_connection_rqg_tra...
35.98
KB
-rw-r--r--
explain_for_connection_small_j...
25.46
KB
-rw-r--r--
explain_for_connection_small_t...
10.3
KB
-rw-r--r--
explain_json_all.result
98.36
KB
-rw-r--r--
explain_json_none.result
102.18
KB
-rw-r--r--
explain_other.result
42.23
KB
-rw-r--r--
file_contents.result
181
B
-rw-r--r--
filesort_debug.result
4.59
KB
-rw-r--r--
filesort_merge.result
2.02
KB
-rw-r--r--
filesort_pack.result
675
B
-rw-r--r--
filter_single_col_idx_big.resu...
38.05
KB
-rw-r--r--
filter_single_col_idx_small.re...
42.99
KB
-rw-r--r--
fix_priv_tables.result
1.96
KB
-rw-r--r--
flush.result
13.78
KB
-rw-r--r--
flush2.result
1.06
KB
-rw-r--r--
flush_block_commit.result
1.47
KB
-rw-r--r--
flush_block_commit_notembedded...
872
B
-rw-r--r--
flush_read_lock.result
73.94
KB
-rw-r--r--
flush_read_lock_kill.result
1.12
KB
-rw-r--r--
flush_table.result
12.33
KB
-rw-r--r--
foreign_key.result
4.84
KB
-rw-r--r--
fulltext.result
32.93
KB
-rw-r--r--
fulltext2.result
7.54
KB
-rw-r--r--
fulltext3.result
815
B
-rw-r--r--
fulltext_cache.result
2.67
KB
-rw-r--r--
fulltext_distinct.result
1.45
KB
-rw-r--r--
fulltext_left_join.result
4
KB
-rw-r--r--
fulltext_multi.result
766
B
-rw-r--r--
fulltext_order_by.result
6.05
KB
-rw-r--r--
fulltext_plugin.result
229
B
-rw-r--r--
fulltext_update.result
1.11
KB
-rw-r--r--
fulltext_var.result
1.3
KB
-rw-r--r--
func_aes.result
12.97
KB
-rw-r--r--
func_aes_cfb1.result
4.5
KB
-rw-r--r--
func_aes_cfb128.result
4.57
KB
-rw-r--r--
func_aes_cfb8.result
4.5
KB
-rw-r--r--
func_aes_kdf_hkdf.result
3.94
KB
-rw-r--r--
func_aes_kdf_pbkdf2_hmac.resul...
6.79
KB
-rw-r--r--
func_aes_misc.result
8.46
KB
-rw-r--r--
func_aes_ofb.result
4.47
KB
-rw-r--r--
func_analyse.result
23.09
KB
-rw-r--r--
func_bitwise_ops.result
80.6
KB
-rw-r--r--
func_compress.result
5.46
KB
-rw-r--r--
func_concat.result
4.37
KB
-rw-r--r--
func_crypt.result
2.05
KB
-rw-r--r--
func_date_add.result
3.74
KB
-rw-r--r--
func_default.result
1.45
KB
-rw-r--r--
func_des_encrypt.result
2.68
KB
-rw-r--r--
func_digest.result
122.35
KB
-rw-r--r--
func_encrypt.result
19.82
KB
-rw-r--r--
func_encrypt_nossl.result
7.75
KB
-rw-r--r--
func_encrypt_ucs2.result
1.21
KB
-rw-r--r--
func_equal.result
1.27
KB
-rw-r--r--
func_found_rows.result
285
B
-rw-r--r--
func_gconcat.result
49.9
KB
-rw-r--r--
func_group.result
66.46
KB
-rw-r--r--
func_group_innodb.result
6.07
KB
-rw-r--r--
func_group_innodb_16k.result
693
B
-rw-r--r--
func_if.result
6.29
KB
-rw-r--r--
func_in_all.result
49.27
KB
-rw-r--r--
func_in_icp.result
48.91
KB
-rw-r--r--
func_in_icp_mrr.result
49.21
KB
-rw-r--r--
func_in_mrr.result
48.93
KB
-rw-r--r--
func_in_mrr_cost.result
48.65
KB
-rw-r--r--
func_in_none.result
48.6
KB
-rw-r--r--
func_isnull.result
827
B
-rw-r--r--
func_like.result
7.78
KB
-rw-r--r--
func_math.result
42.22
KB
-rw-r--r--
func_misc.result
36.8
KB
-rw-r--r--
func_op.result
2.12
KB
-rw-r--r--
func_regexp.result
4.47
KB
-rw-r--r--
func_rollback.result
13.02
KB
-rw-r--r--
func_sapdb.result
12.49
KB
-rw-r--r--
func_set.result
8.9
KB
-rw-r--r--
func_str.result
174.94
KB
-rw-r--r--
func_str_debug.result
349
B
-rw-r--r--
func_str_no_ps.result
1.3
KB
-rw-r--r--
func_system.result
2.9
KB
-rw-r--r--
func_test.result
14.47
KB
-rw-r--r--
func_time.result
71.47
KB
-rw-r--r--
func_timestamp.result
518
B
-rw-r--r--
func_weight_string.result
11.56
KB
-rw-r--r--
function_defaults.result
109.58
KB
-rw-r--r--
gcc296.result
528
B
-rw-r--r--
get_diagnostics.result
28.42
KB
-rw-r--r--
get_table_share.result
20.56
KB
-rw-r--r--
gis-debug.result
10.1
KB
-rw-r--r--
gis-precise.result
162.17
KB
-rw-r--r--
gis-rt-precise.result
2.42
KB
-rw-r--r--
gis-rtree.result
102.08
KB
-rw-r--r--
gis.result
131.8
KB
-rw-r--r--
grant.result
121.17
KB
-rw-r--r--
grant2.result
36.52
KB
-rw-r--r--
grant3.result
8.41
KB
-rw-r--r--
grant4.result
9.36
KB
-rw-r--r--
grant_alter_user.result
40.96
KB
-rw-r--r--
grant_alter_user_qa.result
98.38
KB
-rw-r--r--
grant_cache.result
6.71
KB
-rw-r--r--
grant_debug.result
8.5
KB
-rw-r--r--
grant_explain_non_select.resul...
10.27
KB
-rw-r--r--
grant_lowercase_fs.result
1.2
KB
-rw-r--r--
grant_user_lock.result
16.9
KB
-rw-r--r--
grant_user_lock_qa.result
41.4
KB
-rw-r--r--
greedy_optimizer.result
632.59
KB
-rw-r--r--
greedy_search.result
31.05
KB
-rw-r--r--
group_by.result
120.07
KB
-rw-r--r--
group_by_fd_no_prot.result
81.15
KB
-rw-r--r--
group_by_fd_ps_prot.result
61.28
KB
-rw-r--r--
group_min_max.result
189.52
KB
-rw-r--r--
group_min_max_innodb.result
25.09
KB
-rw-r--r--
gtid_next_xa_binlog_off.result
30.9
KB
-rw-r--r--
gtids_anonymous_trxs_violation...
687
B
-rw-r--r--
handler_innodb.result
41.58
KB
-rw-r--r--
handler_myisam.result
45.48
KB
-rw-r--r--
handler_read_last.result
1.15
KB
-rw-r--r--
have_big5.require
79
B
-rw-r--r--
have_binlog_format_mixed.requi...
40
B
-rw-r--r--
have_binlog_format_row.require
38
B
-rw-r--r--
have_binlog_format_statement.r...
44
B
-rw-r--r--
have_compress.require
38
B
-rw-r--r--
have_cp1250_ch.require
79
B
-rw-r--r--
have_cp1251.require
84
B
-rw-r--r--
have_cp866.require
82
B
-rw-r--r--
have_cp932.require
83
B
-rw-r--r--
have_crypt.require
35
B
-rw-r--r--
have_debug.require
8
B
-rw-r--r--
have_debug_sync.require
13
B
-rw-r--r--
have_eucjpms.require
87
B
-rw-r--r--
have_euckr.require
81
B
-rw-r--r--
have_gb18030.require
87
B
-rw-r--r--
have_gb2312.require
84
B
-rw-r--r--
have_gbk.require
78
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Code Editor : func_gconcat.result
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 partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 9 100.00 Using filesort Warnings: Warning 1681 'EXTENDED' is deprecated and will be removed in a future release. 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` 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 partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 9 100.00 Using filesort Warnings: Warning 1681 'EXTENDED' is deprecated and will be removed in a future release. 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` 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 partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 9 100.00 Using filesort Warnings: Warning 1681 'EXTENDED' is deprecated and will be removed in a future release. 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` 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 order by c) from t1 group by grp; grp group_concat(c order by c) 1 NULL 2 b 3 D,D, 4 5 NULL Warnings: Warning 1260 Row 4 was cut by GROUP_CONCAT() show warnings; Level Code Message Warning 1260 Row 4 was 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 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 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; grp 5,4,3,2 select group_concat(c order by (select concat(t1.c,group_concat(c)) from t2 where a=t1.a)) as grp from t1; grp 2,3,4,5 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) 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=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 ('�'); SELECT a FROM t1; a � SELECT GROUP_CONCAT(a) FROM t1; GROUP_CONCAT(a) � 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) ); 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 0 0 8 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 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; insert into t1 (id, name) values (1, "�ra"); insert into t1 (id, name) values (2, "�ra"); select b.id, group_concat(b.name) from t1 a, t1 b group by b.id; id group_concat(b.name) 1 �ra,�ra 2 �ra,�ra 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 EXTENDED 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: Warning 1681 'EXTENDED' is deprecated and will be removed in a future release. 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 extended and group_concat # CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (0), (0); EXPLAIN EXTENDED 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: Warning 1681 'EXTENDED' is deprecated and will be removed in a future release. 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 extended are still crashy # CREATE TABLE t1(a INT); EXPLAIN EXTENDED 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 Warning 1681 'EXTENDED' is deprecated and will be removed in a future release. 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)` mediumtext ) ENGINE=ENGINE DEFAULT CHARSET=latin1 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)` mediumtext ) ENGINE=ENGINE DEFAULT CHARSET=latin1 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;
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