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 | : 18.226.181.89
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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 : explain_other.result
# WL#6369: EXPLAIN for other query CREATE DATABASE mysqltest1; USE mysqltest1; CREATE TABLE t1 (f1 int); INSERT INTO t1 VALUES (1),(2); ERROR HY000: This command is not supported in the prepared statement protocol yet Test error throwing EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'EXPLAIN SELECT f1 FROM t1' ERROR HY000: EXPLAIN FOR CONNECTION command is supported only for SELECT/UPDATE/INSERT/DELETE/REPLACE EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SHOW FIELDS IN t1' ERROR HY000: EXPLAIN FOR CONNECTION command is supported only for SELECT/UPDATE/INSERT/DELETE/REPLACE PREPARE stmt FROM 'EXPLAIN FOR CONNECTION 1'; ERROR HY000: This command is not supported in the prepared statement protocol yet PREPARE stmt FROM 'SELECT * FROM t1'; EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'EXECUTE stmt' ERROR HY000: EXPLAIN FOR CONNECTION command is supported only for SELECT/UPDATE/INSERT/DELETE/REPLACE CREATE PROCEDURE proc6369() EXPLAIN FOR CONNECTION 1; ERROR 42000: This version of MySQL doesn't yet support 'non-standalone EXPLAIN FOR CONNECTION' CREATE PROCEDURE proc6369() SELECT * FROM t1; EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'CALL proc6369()' ERROR HY000: EXPLAIN FOR CONNECTION command is supported only for SELECT/UPDATE/INSERT/DELETE/REPLACE DROP PROCEDURE proc6369; ERROR HY000: EXPLAIN FOR CONNECTION command is supported only for SELECT/UPDATE/INSERT/DELETE/REPLACE EXPLAIN FOR CONNECTION 11111111; ERROR HY000: Unknown thread id: 11111111 Explain queries with ready plan EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SELECT f1 FROM t1' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SELECT * FROM (SELECT * FROM t1) tt' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SELECT * FROM t1 WHERE f1 IN (SELECT * FROM t1)' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 50.00 Using where; FirstMatch(t1); Using join buffer (Block Nested Loop) EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SELECT * FROM t1 UNION ALL SELECT * FROM t1 ORDER BY 1' 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 2 UNION t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL NULL UNION RESULT <union1,2> NULL ALL NULL NULL NULL NULL NULL NULL Using temporary; Using filesort EXPLAIN FORMAT=JSON FOR QUERY 'SELECT f1 FROM t1' EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "1.40" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 2, "rows_produced_per_join": 2, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "0.40", "prefix_cost": "1.40", "data_read_per_join": "16" }, "used_columns": [ "f1" ] } } } EXPLAIN FORMAT=JSON FOR QUERY 'SELECT * FROM (SELECT * FROM t1) tt' EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "1.40" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 2, "rows_produced_per_join": 2, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "0.40", "prefix_cost": "1.40", "data_read_per_join": "16" }, "used_columns": [ "f1" ] } } } EXPLAIN FORMAT=JSON FOR QUERY 'SELECT * FROM t1 WHERE f1 IN (SELECT * FROM t1)' EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "3.20" }, "nested_loop": [ { "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 2, "rows_produced_per_join": 2, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "0.40", "prefix_cost": "1.40", "data_read_per_join": "16" }, "used_columns": [ "f1" ] } }, { "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 2, "rows_produced_per_join": 2, "filtered": "50.00", "using_where": true, "first_match": "t1", "using_join_buffer": "Block Nested Loop", "cost_info": { "read_cost": "1.00", "eval_cost": "0.40", "prefix_cost": "3.20", "data_read_per_join": "16" }, "used_columns": [ "f1" ] } } ] } } EXPLAIN FORMAT=JSON FOR QUERY 'SELECT * FROM t1 UNION ALL SELECT * FROM t1 ORDER BY 1' EXPLAIN { "query_block": { "union_result": { "using_temporary_table": true, "table_name": "<union1,2>", "access_type": "ALL", "query_specifications": [ { "dependent": false, "cacheable": true, "query_block": { "select_id": 1, "cost_info": { "query_cost": "1.40" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 2, "rows_produced_per_join": 2, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "0.40", "prefix_cost": "1.40", "data_read_per_join": "16" }, "used_columns": [ "f1" ] } } }, { "dependent": false, "cacheable": true, "query_block": { "select_id": 2, "cost_info": { "query_cost": "1.40" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 2, "rows_produced_per_join": 2, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "0.40", "prefix_cost": "1.40", "data_read_per_join": "16" }, "used_columns": [ "f1" ] } } } ] } } } EXPLAIN FORMAT=JSON FOR QUERY 'SELECT * FROM t1 WHERE 1=0' EXPLAIN { "query_block": { "select_id": 1, "message": "Impossible WHERE" } } EXPLAIN FORMAT=JSON FOR QUERY 'SELECT * FROM t1 GROUP BY f1 NOT IN (SELECT f1+10 AS f2 FROM t1 AS t2 GROUP BY f2 NOT IN (SELECT f1+100 AS f3 FROM t1 AS t3))' EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "3.40" }, "grouping_operation": { "using_temporary_table": true, "using_filesort": true, "cost_info": { "sort_cost": "2.00" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 2, "rows_produced_per_join": 2, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "0.40", "prefix_cost": "1.40", "data_read_per_join": "16" }, "used_columns": [ "f1" ] }, "group_by_subqueries": [ { "dependent": true, "cacheable": false, "query_block": { "select_id": 2, "cost_info": { "query_cost": "1.40" }, "table": { "table_name": "t2", "access_type": "ALL", "rows_examined_per_scan": 2, "rows_produced_per_join": 2, "filtered": "100.00", "using_where": true, "cost_info": { "read_cost": "1.00", "eval_cost": "0.40", "prefix_cost": "1.40", "data_read_per_join": "16" }, "used_columns": [ "f1" ] } } } ] } } } Explain for non-select queries EXPLAIN FORMAT=JSON FOR QUERY 'INSERT INTO t1 VALUES (3)' EXPLAIN { "query_block": { "select_id": 1, "table": { "insert": true, "table_name": "t1", "access_type": "ALL" } } } EXPLAIN FORMAT=JSON FOR QUERY 'INSERT INTO t1 SELECT 4' EXPLAIN { "query_block": { "select_id": 1, "table": { "insert": true, "table_name": "t1", "access_type": "ALL" } } } EXPLAIN FORMAT=JSON FOR QUERY 'INSERT INTO t1 SELECT f1 + 4 FROM t1' EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "1.80" }, "table": { "insert": true, "select_id": 1, "table_name": "t1", "access_type": "ALL" }, "insert_from": { "buffer_result": { "using_temporary_table": true, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 4, "rows_produced_per_join": 4, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "0.80", "prefix_cost": "1.80", "data_read_per_join": "32" }, "used_columns": [ "f1" ] } } } } } EXPLAIN FORMAT=JSON FOR QUERY 'UPDATE t1 SET f1=4 WHERE f1=4' EXPLAIN { "query_block": { "select_id": 1, "message": "Plan isn't ready yet" } } EXPLAIN FORMAT=JSON FOR QUERY 'UPDATE t1 SET f1=4 WHERE f1=4' EXPLAIN { "query_block": { "select_id": 1, "table": { "update": true, "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 8, "filtered": "100.00", "using_where": true } } } CREATE TABLE t2 (f2 int); EXPLAIN FORMAT=JSON FOR QUERY 'UPDATE t1 SET f1=f1+0 ORDER BY f1 NOT IN (SELECT f1+10 AS f2 FROM t2 GROUP BY f2 NOT IN (SELECT f1+100 AS f3 FROM t2 AS t3))' EXPLAIN { "query_block": { "select_id": 1, "ordering_operation": { "using_filesort": true, "table": { "update": true, "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 8, "filtered": "100.00" }, "order_by_subqueries": [ { "dependent": false, "cacheable": true, "query_block": { "select_id": 2, "message": "Plan isn't ready yet" } } ] } } } CREATE VIEW v1 AS SELECT t1.f1 FROM t1 JOIN t1 tt on t1.f1=tt.f1; EXPLAIN FORMAT=JSON FOR QUERY 'UPDATE v1 SET f1=5 WHERE f1=5' EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "5.20" }, "nested_loop": [ { "table": { "update": true, "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 8, "rows_produced_per_join": 1, "filtered": "12.50", "using_where": true, "cost_info": { "read_cost": "2.40", "eval_cost": "0.20", "prefix_cost": "2.60", "data_read_per_join": "8" }, "used_columns": [ "f1" ] } }, { "table": { "table_name": "tt", "access_type": "ALL", "rows_examined_per_scan": 8, "rows_produced_per_join": 1, "filtered": "12.50", "using_where": true, "cost_info": { "read_cost": "2.40", "eval_cost": "0.20", "prefix_cost": "5.20", "data_read_per_join": "8" }, "used_columns": [ "f1" ] } } ] } } EXPLAIN FORMAT=JSON FOR QUERY 'DELETE FROM t1 WHERE f1=4' EXPLAIN { "query_block": { "select_id": 1, "table": { "delete": true, "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 8, "filtered": "100.00", "using_where": true } } } EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'INSERT INTO t1 VALUES (3)' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 NULL ALL NULL NULL NULL NULL NULL NULL NULL EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'INSERT INTO t1 SELECT 4' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 NULL ALL NULL NULL NULL NULL NULL NULL NULL EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'INSERT INTO t1 SELECT f1 + 4 FROM t1' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 INSERT t1 NULL ALL NULL NULL NULL NULL NULL NULL NULL 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 9 100.00 Using temporary EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'UPDATE t1 SET f1=4 WHERE f1=4' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 UPDATE t1 NULL ALL NULL NULL NULL NULL 18 100.00 Using where EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'UPDATE v1 SET f1=5 WHERE f1=5' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 UPDATE t1 NULL ALL NULL NULL NULL NULL 18 10.00 Using where 1 SIMPLE tt NULL ALL NULL NULL NULL NULL 18 10.00 Using where EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'DELETE FROM t1 WHERE f1=4' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 DELETE t1 NULL ALL NULL NULL NULL NULL 18 100.00 Using where Explain queries with plan only partially ready EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SELECT * FROM (SELECT * FROM t1 GROUP BY 1) tt' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL Plan isn't ready yet 2 DERIVED t1 NULL ALL NULL NULL NULL NULL 17 100.00 Using temporary; Using filesort EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SELECT * FROM t1 UNION ALL SELECT * FROM t1 ORDER BY (SELECT * FROM t1 LIMIT 1)' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 17 100.00 NULL 2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL Plan isn't ready yet NULL UNION RESULT NULL NULL NULL NULL NULL NULL NULL NULL NULL Plan isn't ready yet 3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL NULL Plan isn't ready yet EXPLAIN FORMAT=JSON FOR QUERY 'SELECT * FROM (SELECT * FROM t1 GROUP BY 1) tt' EXPLAIN { "query_block": { "select_id": 1, "message": "Plan isn't ready yet", "table": { "materialized_from_subquery": { "using_temporary_table": true, "dependent": false, "cacheable": true, "query_block": { "select_id": 2, "cost_info": { "query_cost": "21.40" }, "grouping_operation": { "using_temporary_table": true, "using_filesort": true, "cost_info": { "sort_cost": "17.00" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 17, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "3.40", "prefix_cost": "4.40", "data_read_per_join": "136" }, "used_columns": [ "f1" ] } } } } } } } EXPLAIN FORMAT=JSON FOR QUERY 'SELECT * FROM t1 UNION ALL SELECT * FROM t1 ORDER BY (SELECT * FROM t1 LIMIT 1)' EXPLAIN { "query_block": { "ordering_operation": { "using_filesort": true, "union_result": { "using_temporary_table": true, "message": "Plan isn't ready yet", "query_specifications": [ { "dependent": false, "cacheable": true, "query_block": { "select_id": 1, "cost_info": { "query_cost": "4.40" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 17, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "3.40", "prefix_cost": "4.40", "data_read_per_join": "136" }, "used_columns": [ "f1" ] } } }, { "dependent": false, "cacheable": true, "query_block": { "select_id": 2, "message": "Plan isn't ready yet" } } ] }, "order_by_subqueries": [ { "dependent": false, "cacheable": true, "query_block": { "select_id": 3, "message": "Plan isn't ready yet" } } ] } } } Ensure materialized derived still has plans after materialization set @optimizer_switch_saved= @@optimizer_switch; set optimizer_switch='derived_merge=off'; EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SELECT * FROM (SELECT * FROM t1) tt' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY <derived2> NULL ALL NULL NULL NULL NULL 17 100.00 NULL 2 DERIVED t1 NULL ALL NULL NULL NULL NULL 17 100.00 NULL EXPLAIN FORMAT=JSON FOR QUERY 'SELECT * FROM (SELECT * FROM t1) tt' EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "14.25" }, "table": { "table_name": "tt", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 17, "filtered": "100.00", "cost_info": { "read_cost": "10.85", "eval_cost": "3.40", "prefix_cost": "14.25", "data_read_per_join": "272" }, "used_columns": [ "f1" ], "materialized_from_subquery": { "using_temporary_table": true, "dependent": false, "cacheable": true, "query_block": { "select_id": 2, "cost_info": { "query_cost": "4.40" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 17, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "3.40", "prefix_cost": "4.40", "data_read_per_join": "136" }, "used_columns": [ "f1" ] } } } } } } set optimizer_switch= @optimizer_switch_saved; WHERE subqueries, neither parent query nor subquery has plan EXPLAIN FORMAT=JSON FOR QUERY 'SELECT t2.f1 FROM t1 STRAIGHT_JOIN t1 AS t2 WHERE t1.f1>(SELECT t3.f1 FROM t1 AS t3 LIMIT 1)' EXPLAIN { "query_block": { "select_id": 1, "message": "Plan isn't ready yet", "attached_subqueries": [ { "dependent": false, "cacheable": true, "query_block": { "select_id": 2, "message": "Plan isn't ready yet" } } ] } } the same, parent query has a plan EXPLAIN FORMAT=JSON FOR QUERY 'SELECT t2.f1 FROM t1 STRAIGHT_JOIN t1 AS t2 WHERE t1.f1>(SELECT t3.f1 FROM t1 AS t3 LIMIT 1)' EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "24.66" }, "nested_loop": [ { "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 5, "filtered": "33.33", "using_where": true, "cost_info": { "read_cost": "3.27", "eval_cost": "1.13", "prefix_cost": "4.40", "data_read_per_join": "45" }, "used_columns": [ "f1" ], "attached_subqueries": [ { "dependent": false, "cacheable": true, "query_block": { "select_id": 2, "message": "Plan isn't ready yet" } } ] } }, { "table": { "table_name": "t2", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 96, "filtered": "100.00", "using_join_buffer": "Block Nested Loop", "cost_info": { "read_cost": "1.00", "eval_cost": "19.26", "prefix_cost": "24.66", "data_read_per_join": "770" }, "used_columns": [ "f1" ] } } ] } } the same, both have a plan EXPLAIN FORMAT=JSON FOR QUERY 'SELECT t2.f1 FROM t1 STRAIGHT_JOIN t1 AS t2 WHERE t1.f1>(SELECT t3.f1 FROM t1 AS t3 LIMIT 1)' EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "24.66" }, "nested_loop": [ { "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 5, "filtered": "33.33", "using_where": true, "cost_info": { "read_cost": "3.27", "eval_cost": "1.13", "prefix_cost": "4.40", "data_read_per_join": "45" }, "used_columns": [ "f1" ], "attached_subqueries": [ { "dependent": false, "cacheable": true, "query_block": { "select_id": 2, "cost_info": { "query_cost": "4.40" }, "table": { "table_name": "t3", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 17, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "3.40", "prefix_cost": "4.40", "data_read_per_join": "136" }, "used_columns": [ "f1" ] } } } ] } }, { "table": { "table_name": "t2", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 96, "filtered": "100.00", "using_join_buffer": "Block Nested Loop", "cost_info": { "read_cost": "1.00", "eval_cost": "19.26", "prefix_cost": "24.66", "data_read_per_join": "770" }, "used_columns": [ "f1" ] } } ] } } To be compared with regular EXPLAIN: EXPLAIN FORMAT=JSON SELECT t2.f1 FROM t1 STRAIGHT_JOIN t1 AS t2 WHERE t1.f1>(SELECT t3.f1 FROM t1 AS t3 LIMIT 1); EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "24.66" }, "nested_loop": [ { "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 5, "filtered": "33.33", "cost_info": { "read_cost": "3.27", "eval_cost": "1.13", "prefix_cost": "4.40", "data_read_per_join": "45" }, "used_columns": [ "f1" ], "attached_condition": "(`mysqltest1`.`t1`.`f1` > (/* select#2 */ select `mysqltest1`.`t3`.`f1` from `mysqltest1`.`t1` `t3` limit 1))", "attached_subqueries": [ { "dependent": false, "cacheable": true, "query_block": { "select_id": 2, "cost_info": { "query_cost": "4.40" }, "table": { "table_name": "t3", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 17, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "3.40", "prefix_cost": "4.40", "data_read_per_join": "136" }, "used_columns": [ "f1" ] } } } ] } }, { "table": { "table_name": "t2", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 96, "filtered": "100.00", "using_join_buffer": "Block Nested Loop", "cost_info": { "read_cost": "1.00", "eval_cost": "19.26", "prefix_cost": "24.66", "data_read_per_join": "770" }, "used_columns": [ "f1" ] } } ] } } Warnings: Note 1003 /* select#1 */ select `t2`.`f1` AS `f1` from `mysqltest1`.`t1` straight_join `mysqltest1`.`t1` `t2` where (`mysqltest1`.`t1`.`f1` > (/* select#2 */ select `mysqltest1`.`t3`.`f1` from `mysqltest1`.`t1` `t3` limit 1)) EXPLAIN FORMAT=JSON FOR QUERY 'SELECT 1 FROM t1 WHERE ROW(f1,f1) >= ROW('1', (SELECT 1 FROM t1 WHERE f1 > 1234))' EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "4.40" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 17, "filtered": "100.00", "using_where": true, "cost_info": { "read_cost": "1.00", "eval_cost": "3.40", "prefix_cost": "4.40", "data_read_per_join": "136" }, "used_columns": [ "f1" ] }, "optimized_away_subqueries": [ { "dependent": false, "cacheable": true, "query_block": { "select_id": 2, "cost_info": { "query_cost": "4.40" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 5, "filtered": "33.33", "using_where": true, "cost_info": { "read_cost": "3.27", "eval_cost": "1.13", "prefix_cost": "4.40", "data_read_per_join": "45" }, "used_columns": [ "f1" ] } } } ] } } EXPLAIN FORMAT=JSON SELECT 1 FROM t1 WHERE ROW(f1,f1) >= ROW('1', (SELECT 1 FROM t1 WHERE f1 > 1234)); EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "4.40" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 17, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "3.40", "prefix_cost": "4.40", "data_read_per_join": "136" }, "used_columns": [ "f1" ], "attached_condition": "((`mysqltest1`.`t1`.`f1`,`mysqltest1`.`t1`.`f1`) >= <cache>(('1',(/* select#2 */ select 1 from `mysqltest1`.`t1` where (`t1`.`f1` > 1234)))))" }, "optimized_away_subqueries": [ { "dependent": false, "cacheable": true, "query_block": { "select_id": 2, "cost_info": { "query_cost": "4.40" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 5, "filtered": "33.33", "cost_info": { "read_cost": "3.27", "eval_cost": "1.13", "prefix_cost": "4.40", "data_read_per_join": "45" }, "used_columns": [ "f1" ], "attached_condition": "(`t1`.`f1` > 1234)" } } } ] } } Warnings: Note 1003 /* select#1 */ select 1 AS `1` from `mysqltest1`.`t1` where ((`mysqltest1`.`t1`.`f1`,`mysqltest1`.`t1`.`f1`) >= <cache>(('1',(/* select#2 */ select 1 from `mysqltest1`.`t1` where (`t1`.`f1` > 1234))))) CREATE TABLE t3 (pk INT PRIMARY KEY); INSERT INTO t3 SELECT DISTINCT * FROM t1; EXPLAIN FORMAT=JSON FOR QUERY 'SELECT * FROM t3 WHERE pk=(SELECT f1 FROM t1 limit 1)' EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "1.00" }, "table": { "table_name": "t3", "access_type": "const", "possible_keys": [ "PRIMARY" ], "key": "PRIMARY", "used_key_parts": [ "pk" ], "key_length": "4", "ref": [ "const" ], "rows_examined_per_scan": 1, "rows_produced_per_join": 1, "filtered": "100.00", "using_index": true, "cost_info": { "read_cost": "0.00", "eval_cost": "0.20", "prefix_cost": "0.00", "data_read_per_join": "8" }, "used_columns": [ "pk" ] }, "optimized_away_subqueries": [ { "dependent": false, "cacheable": true, "query_block": { "select_id": 2, "cost_info": { "query_cost": "4.40" }, "table": { "table_name": "t1", "access_type": "ALL", "rows_examined_per_scan": 17, "rows_produced_per_join": 17, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "3.40", "prefix_cost": "4.40", "data_read_per_join": "136" }, "used_columns": [ "f1" ] } } } ] } } # Check access rights checking set @orig_sql_mode = @@sql_mode; set sql_mode=(select replace(@@sql_mode,'NO_AUTO_CREATE_USER','')); Warnings: Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release. GRANT USAGE ON *.* TO 'privtest'@'localhost'; Warnings: Warning 1287 Using GRANT for creating new user is deprecated and will be removed in future release. Create new user with CREATE USER statement. set sql_mode= @orig_sql_mode; Warnings: Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release. GRANT SUPER ON *.* TO 'privtest'@'localhost'; GRANT SELECT ON mysqltest1.t2 TO 'privtest'@'localhost'; CREATE VIEW v2 AS SELECT * FROM t2; GRANT SELECT,INSERT,UPDATE ON mysqltest1.v2 TO 'privtest'@'localhost'; EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SELECT f1 FROM t1' ERROR 28000: Access denied for user 'privtest'@'localhost' (using password: NO) SELECT f2 FROM v2; f2 EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SELECT f2 FROM v2' ERROR 28000: Access denied for user 'privtest'@'localhost' (using password: NO) UPDATE v2 SET f2=1; EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'UPDATE v2 SET f2=1' ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table INSERT INTO v2 VALUES(1); EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'INSERT INTO v2 VALUES(1)' ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table INSERT INTO v2 SELECT 3 FROM t2; EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'INSERT INTO v2 SELECT 3 FROM t2' ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table SELECT f2 FROM v2; f2 1 1 3 3 3 3 3 3 EXPLAIN SELECT f2 FROM v2; ERROR HY000: EXPLAIN/SHOW can not be issued; lacking privileges for underlying table DROP USER 'privtest'@localhost; DROP VIEW v1, v2; DROP TABLE t1, t2, t3; # # Bug#14586538: EXPLAIN OTHER RESULT NOT MATCHING WITH EXPLAIN # CREATE TABLE h2 ( pk int(11) NOT NULL AUTO_INCREMENT, PRIMARY KEY (pk) ) ENGINE=MyISAM AUTO_INCREMENT=10 DEFAULT CHARSET=latin1; insert into h2 values (1),(2),(3),(4),(5),(6),(7),(8),(9); CREATE TABLE aa3 ( col_int_key int(11) DEFAULT NULL, KEY col_int_key (col_int_key) ) ENGINE=InnoDB DEFAULT CHARSET=latin1; EXPLAIN SELECT alias1.pk AS field1 FROM h2 AS alias1 LEFT JOIN aa3 AS alias2 ON alias1.pk = alias2.col_int_key WHERE alias1.pk <> 9 GROUP BY field1 ORDER BY field1 LIMIT 1 OFFSET 3;; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE alias1 NULL index PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index 1 SIMPLE alias2 NULL ref col_int_key col_int_key 5 mysqltest1.alias1.pk 1 100.00 Using index Warnings: Note 1003 /* select#1 */ select `mysqltest1`.`alias1`.`pk` AS `field1` from `mysqltest1`.`h2` `alias1` left join `mysqltest1`.`aa3` `alias2` on((`mysqltest1`.`alias2`.`col_int_key` = `mysqltest1`.`alias1`.`pk`)) where (`mysqltest1`.`alias1`.`pk` <> 9) group by `field1` order by `field1` limit 3,1 Should show same # of rows as above EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SELECT alias1.pk AS field1 FROM h2 AS alias1 LEFT JOIN aa3 AS alias2 ON alias1.pk = alias2.col_int_key WHERE alias1.pk <> 9 GROUP BY field1 ORDER BY field1 LIMIT 1 OFFSET 3' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE alias1 NULL index PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index 1 SIMPLE alias2 NULL ref col_int_key col_int_key 5 mysqltest1.alias1.pk 1 100.00 Using index DROP TABLE h2, aa3; # # Bug#14591376: EXPLAIN OTHER RESULT NOT MATCHING WITH EXPLAIN - REF # CREATE TABLE t1 ( pk int(11), col_int_key int(11) DEFAULT NULL, KEY col_int_key (col_int_key) ) ENGINE=MyISAM DEFAULT CHARSET=latin1; INSERT INTO t1 VALUES (NULL,NULL); INSERT INTO t1 VALUES (6,NULL); INSERT INTO t1 VALUES (8,-1131610112); INSERT INTO t1 VALUES (2,-1009057792); INSERT INTO t1 VALUES (-1220345856,1); INSERT INTO t1 VALUES (NULL,-185204736); EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SELECT pk FROM t1 WHERE col_int_key= 8' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ref col_int_key col_int_key 5 const 1 100.00 NULL DROP TABLE t1; # From Bug#14463247 MYSQL CRASHES ON THE QUERY # CREATE TABLE tbl1 ( login int(11) NOT NULL, numb decimal(15,2) NOT NULL DEFAULT '0.00', PRIMARY KEY (login), KEY numb (numb) ) ; CREATE TABLE tbl2 ( login int(11) NOT NULL, cmd tinyint(4) NOT NULL, nump decimal(15,2) NOT NULL DEFAULT '0.00', KEY cmd (cmd), KEY login (login) ) ; insert into tbl1 (login) values(1),(2); insert ignore into tbl2 (login) values(1),(2); Warnings: Warning 1364 Field 'cmd' doesn't have a default value EXPLAIN FORMAT=TRADITIONAL FOR QUERY 'SELECT t1.login AS tlogin, numb - IFNULL((SELECT sum(nump) FROM tbl2 WHERE login=t1.login), 0) - IFNULL((SELECT sum(nump) FROM tbl2 WHERE login=t1.login), 0) as sp FROM tbl1 t1, tbl2 t2 WHERE t1.login=t2.login GROUP BY t1.login ORDER BY numb - IFNULL((SELECT sum(nump) FROM tbl2 WHERE login=t1.login), 0) - IFNULL((SELECT sum(nump) FROM tbl2 WHERE login=t1.login), 0) ' id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL index PRIMARY,numb PRIMARY 4 NULL 2 100.00 Using temporary; Using filesort 1 PRIMARY t2 NULL ref login login 4 mysqltest1.t1.login 1 100.00 Using index 3 DEPENDENT SUBQUERY tbl2 NULL ref login login 4 func 1 100.00 NULL 2 DEPENDENT SUBQUERY tbl2 NULL ref login login 4 func 1 100.00 NULL EXPLAIN FORMAT=JSON FOR QUERY 'SELECT t1.login AS tlogin, numb - IFNULL((SELECT sum(nump) FROM tbl2 WHERE login=t1.login), 0) - IFNULL((SELECT sum(nump) FROM tbl2 WHERE login=t1.login), 0) as sp FROM tbl1 t1, tbl2 t2 WHERE t1.login=t2.login GROUP BY t1.login ORDER BY numb - IFNULL((SELECT sum(nump) FROM tbl2 WHERE login=t1.login), 0) - IFNULL((SELECT sum(nump) FROM tbl2 WHERE login=t1.login), 0) ' EXPLAIN { "query_block": { "select_id": 1, "cost_info": { "query_cost": "3.80" }, "ordering_operation": { "using_temporary_table": true, "using_filesort": true, "grouping_operation": { "using_filesort": false, "nested_loop": [ { "table": { "table_name": "t1", "access_type": "index", "possible_keys": [ "PRIMARY", "numb" ], "key": "PRIMARY", "used_key_parts": [ "login" ], "key_length": "4", "rows_examined_per_scan": 2, "rows_produced_per_join": 2, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "0.40", "prefix_cost": "1.40", "data_read_per_join": "32" }, "used_columns": [ "login", "numb" ] } }, { "table": { "table_name": "t2", "access_type": "ref", "possible_keys": [ "login" ], "key": "login", "used_key_parts": [ "login" ], "key_length": "4", "ref": [ "mysqltest1.t1.login" ], "rows_examined_per_scan": 1, "rows_produced_per_join": 2, "filtered": "100.00", "using_index": true, "cost_info": { "read_cost": "2.00", "eval_cost": "0.40", "prefix_cost": "3.80", "data_read_per_join": "32" }, "used_columns": [ "login" ] } } ], "select_list_subqueries": [ { "dependent": true, "cacheable": false, "query_block": { "select_id": 3, "cost_info": { "query_cost": "1.20" }, "table": { "table_name": "tbl2", "access_type": "ref", "possible_keys": [ "login" ], "key": "login", "used_key_parts": [ "login" ], "key_length": "4", "ref": [ "func" ], "rows_examined_per_scan": 1, "rows_produced_per_join": 1, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "0.20", "prefix_cost": "1.20", "data_read_per_join": "16" }, "used_columns": [ "login", "nump" ] } } }, { "dependent": true, "cacheable": false, "query_block": { "select_id": 2, "cost_info": { "query_cost": "1.20" }, "table": { "table_name": "tbl2", "access_type": "ref", "possible_keys": [ "login" ], "key": "login", "used_key_parts": [ "login" ], "key_length": "4", "ref": [ "func" ], "rows_examined_per_scan": 1, "rows_produced_per_join": 1, "filtered": "100.00", "cost_info": { "read_cost": "1.00", "eval_cost": "0.20", "prefix_cost": "1.20", "data_read_per_join": "16" }, "used_columns": [ "login", "nump" ] } } } ] } } } } DROP TABLE tbl1, tbl2; # End of tests for WL#6369 # # Bug#19822146 EXPLAIN FOR CONNECTION CRASHES IN # EXPLAIN_JOIN::EXPLAIN_QEP_TAB # DROP TABLE IF EXISTS t1, t2; create table t1(a char(10) charset latin1, key(a)) engine=innodb; create table t2(a binary(10), key(a)) engine=innodb; insert into t1 values('1'),('2'),('3'); insert into t2 values('1'),('2'),('s'); analyze table t1,t2; Table Op Msg_type Msg_text mysqltest1.t1 analyze status OK mysqltest1.t2 analyze status OK # Connection cq # Let thread1 to suspend itself right before creating Quick object. SET DEBUG_SYNC= 'quick_not_created SIGNAL ready_for_explain WAIT_FOR explained'; select 1 from t1 inner join t2 using(a); ; # Connection ce SET DEBUG_SYNC= 'now WAIT_FOR ready_for_explain'; SET DEBUG_SYNC= 'after_explain_other SIGNAL explained'; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL index a a 11 NULL 3 100.00 Using index 1 SIMPLE t1 NULL ALL a NULL NULL NULL 3 100.00 Range checked for each record (index map: 0x1) connection: cq 1 SET DEBUG_SYNC= 'RESET'; # Connection cq # Let thread1 to suspend itself right before the mutex section. SET DEBUG_SYNC= 'quick_created_before_mutex SIGNAL ready_for_explain WAIT_FOR explained'; select 1 from t1 inner join t2 using(a);; # Connection ce SET DEBUG_SYNC= 'now WAIT_FOR ready_for_explain'; SET DEBUG_SYNC= 'after_explain_other SIGNAL explained'; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL index a a 11 NULL 3 100.00 Using index 1 SIMPLE t1 NULL ALL a NULL NULL NULL 3 100.00 Range checked for each record (index map: 0x1) connection: cq 1 SET DEBUG_SYNC= 'RESET'; # Connection cq # Let thread1 to suspend itself right after quick object is droped. SET DEBUG_SYNC= 'quick_droped_after_mutex SIGNAL ready_for_explain WAIT_FOR explained'; select 1 from t1 inner join t2 using(a);; # Connection ce SET DEBUG_SYNC= 'now WAIT_FOR ready_for_explain'; SET DEBUG_SYNC= 'after_explain_other SIGNAL explained'; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL index a a 11 NULL 3 100.00 Using index 1 SIMPLE t1 NULL range a a 11 NULL 3 100.00 Range checked for each record (index map: 0x1) connection: cq 1 # Connection default DROP TABLE t1, t2; SET DEBUG_SYNC= 'RESET'; # End of test Bug#19822146 USE test; DROP DATABASE mysqltest1; # End of test
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