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 | : 3.138.174.90
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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 : filter_single_col_idx_big.result
CREATE TABLE t1( col1_idx INT DEFAULT NULL, col2_idx INT DEFAULT NULL, col3 INT DEFAULT NULL, col4 INT NOT NULL, vc VARCHAR(20), vc_ft VARCHAR(20), KEY(col1_idx), KEY(col2_idx), FULLTEXT(vc_ft) ) ENGINE=myisam; CREATE TABLE t2( col1_idx INT DEFAULT NULL, col2_idx INT DEFAULT NULL, col3 INT DEFAULT NULL, KEY(col1_idx), KEY(col2_idx) ) ENGINE=myisam; insert into t1 values (1,1,1,1,'america', 'america'),(2,2,2,2,'england','england'); insert into t1 select col1_idx+2, col2_idx+2, col3+2, col4+2, vc, vc_ft from t1; insert into t1 select col1_idx+2*2, col2_idx+2*2, col3+2*2, col4+2*2, vc, vc_ft from t1; insert into t1 select col1_idx+2*2*2, col2_idx+2*2*2, col3+2*2*2, col4+2*2*2, vc, vc_ft from t1; insert into t1 select col1_idx+2*2*2*2, col2_idx+2*2*2*2, col3+2*2*2*2, col4+2*2*2*2, vc, vc_ft from t1; insert into t1 select col1_idx+2*2*2*2*2, col2_idx+2*2*2*2*2, col3+2*2*2*2*2, col4+2*2*2*2*2, vc, vc_ft from t1; insert into t1 select col1_idx+2*2*2*2*2*2, col2_idx+2*2*2*2*2*2, col3+2*2*2*2*2*2, col4+2*2*2*2*2*2, vc, vc_ft from t1; insert into t1 select col1_idx, col2_idx, col3, col4, 'america', 'america' from t1; insert into t1 select col1_idx, col2_idx, col3, col4, 'england america', 'england america' from t1; insert ignore into t1 select col1_idx, col2_idx, col3, col4, 'germany england america', 'germany england america' from t1; insert into t1 select col1_idx, col2_idx, col3, col4, 'norway sweden', 'norway sweden' from t1 limit 5; insert into t2 select col1_idx,col2_idx,col3 from t1; analyze table t1; Table Op Msg_type Msg_text test.t1 analyze status OK analyze table t2; Table Op Msg_type Msg_text test.t2 analyze status Table is already up to date ### Test that optimizer_condition_fanout_filter works ### set optimizer_switch='condition_fanout_filter=off'; EXPLAIN SELECT * FROM t1 WHERE col3=5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where EXPLAIN SELECT * FROM t1 WHERE col1_idx>1; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL col1_idx NULL NULL NULL 1029 99.42 Using where EXPLAIN SELECT * FROM t1 JOIN t2 WHERE t1.col1_idx=t2.col1_idx; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL ALL col1_idx NULL NULL NULL 1029 100.00 Using where 1 SIMPLE t1 NULL ref col1_idx col1_idx 5 test.t2.col1_idx 8 100.00 NULL set optimizer_switch='condition_fanout_filter=on'; EXPLAIN SELECT * FROM t1 WHERE col3=5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where ######################################################### # Testing non-indexed Operators # Simple operands EXPLAIN SELECT * FROM t1 WHERE t1.col3=5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3<=>5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3>5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3>=5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3<5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3<=5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where # NOT <simple operands> EXPLAIN SELECT * FROM t1 WHERE t1.col3!=5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 90.00 Using where EXPLAIN SELECT * FROM t1 WHERE NOT t1.col3<=5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where # BETWEEN EXPLAIN SELECT * FROM t1 WHERE t1.col3 BETWEEN 5 AND 10; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 11.11 Using where # NOT BETWEEN EXPLAIN SELECT * FROM t1 WHERE t1.col3 NOT BETWEEN 5 AND 10; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 88.89 Using where # <column> IN EXPLAIN SELECT * FROM t1 WHERE t1.col3 IN (5, 6); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 20.00 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3 IN (5, 6, 7, 8); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 40.00 Using where # Dependent subquery in IN list. No filtering in t1 EXPLAIN SELECT * FROM t1 WHERE t1.col3 IN (1, (SELECT col3 FROM t2 where col3=t1.col4 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 1029 100.00 Using where 2 DEPENDENT SUBQUERY t2 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where # <column> NOT IN EXPLAIN SELECT * FROM t1 WHERE t1.col3 NOT IN (5, 6); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 80.00 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3 NOT IN (5, 6, 7, 8); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 60.00 Using where # <row_value> IN EXPLAIN SELECT * FROM t1 WHERE (t1.col3, t1.col4) IN ((5,5),(6,6),(7,7)); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 3.00 Using where EXPLAIN SELECT * FROM t1 WHERE (t1.col3, t1.col4) IN ((5,5),(6,6),(7,7),(8,8),(9,9),(10,10)); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 6.00 Using where EXPLAIN SELECT * FROM t1 WHERE (t1.col3, 1) IN ((5,5),(6,6),(7,7)); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 30.00 Using where # <row_value> NOT IN EXPLAIN SELECT * FROM t1 WHERE (t1.col3, t1.col4) NOT IN ((5,5),(6,6),(7,7)); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 97.00 Using where EXPLAIN SELECT * FROM t1 WHERE (t1.col3, 1) NOT IN ((5,5),(6,6),(7,7)); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 70.00 Using where # NULL EXPLAIN SELECT * FROM t1 WHERE t1.col3 IS NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3 = NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3>NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3>=NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3<NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3<=NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE NULL>t1.col3; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE NULL>=t1.col3; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE NULL<t1.col3; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE NULL<=t1.col3; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where # NOT NULL EXPLAIN SELECT * FROM t1 WHERE t1.col3 IS NOT NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 90.00 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3 != NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 90.00 Using where # NULL (not nullable column) EXPLAIN SELECT * FROM t1 WHERE t1.col4 IS NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE EXPLAIN SELECT * FROM t1 WHERE t1.col4 = NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col4>NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col4>=NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col4<NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col4<=NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE NULL>t1.col4; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE NULL>=t1.col4; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE NULL<t1.col4; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE NULL<=t1.col4; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where # NOT NULL (not nullable column) EXPLAIN SELECT * FROM t1 WHERE t1.col4 IS NOT NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 90.00 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col4 != NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 90.00 Using where # LIKE EXPLAIN SELECT * FROM t1 WHERE t1.vc LIKE 'america'; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 11.11 Using where EXPLAIN SELECT * FROM t1 WHERE t1.vc LIKE '%america'; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 11.11 Using where EXPLAIN SELECT * FROM t1 WHERE t1.vc LIKE 'amer%'; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 11.11 Using where EXPLAIN SELECT * FROM t1 WHERE t1.vc NOT LIKE 'america'; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 88.89 Using where EXPLAIN SELECT * FROM t1 WHERE t1.vc NOT LIKE '%america'; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 88.89 Using where EXPLAIN SELECT * FROM t1 WHERE t1.vc NOT LIKE 'amer%'; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 88.89 Using where # FULLTEXT EXPLAIN SELECT * FROM t1 WHERE MATCH(t1.vc) AGAINST ('+norway' IN BOOLEAN MODE); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 11.11 Using where EXPLAIN SELECT * FROM t1 WHERE MATCH(t1.vc_ft) AGAINST ('+norway'); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL fulltext vc_ft vc_ft 0 const 1 100.00 Using where EXPLAIN SELECT * FROM t1 WHERE MATCH(t1.vc_ft) AGAINST ('norway'); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL fulltext vc_ft vc_ft 0 const 1 100.00 Using where EXPLAIN SELECT * FROM t1 WHERE NOT MATCH(t1.vc) AGAINST ('+norway' IN BOOLEAN MODE); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 88.89 Using where EXPLAIN SELECT * FROM t1 WHERE NOT MATCH(t1.vc_ft) AGAINST ('+norway'); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 88.89 Using where EXPLAIN SELECT * FROM t1 WHERE NOT MATCH(t1.vc_ft) AGAINST ('norway'); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 88.89 Using where # Functions EXPLAIN SELECT * FROM t1 WHERE length(t1.vc) > 3; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where EXPLAIN SELECT * FROM t1 WHERE length(t1.vc) = 3; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where EXPLAIN SELECT * FROM t1 WHERE length(t1.vc) IS NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where EXPLAIN SELECT * FROM t1 WHERE length(t1.vc) IS NOT NULL; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where # AND/OR/XOR EXPLAIN SELECT * FROM t1 WHERE t1.col3<5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col4<5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3<5 OR col4<5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 55.55 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3<5 AND col4<5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 11.11 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3<5 XOR col4<5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 44.44 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3<5 XOR col4<5 XOR col1_idx>3; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 48.15 Using where EXPLAIN SELECT * FROM t1 WHERE t1.col3<5 XOR (col4<5 AND col4>1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 37.03 Using where # Done OP non-indexed tests ### START SUBQUERY LOOP ### # table scan in subq, no filter EXPLAIN SELECT * FROM t1 WHERE t1.col3 IN (SELECT col3 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where 1 SIMPLE <subquery2> NULL eq_ref <auto_key> <auto_key> 5 test.t1.col3 1 100.00 NULL 2 MATERIALIZED t2 NULL ALL NULL NULL NULL NULL 1029 100.00 NULL # table scan in subq, filter from range access EXPLAIN SELECT * FROM t1 WHERE t1.col3 IN (SELECT col3 FROM t2 where col1_idx>2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where 1 SIMPLE <subquery2> NULL eq_ref <auto_key> <auto_key> 5 test.t1.col3 1 100.00 NULL 2 MATERIALIZED t2 NULL ALL col1_idx NULL NULL NULL 1029 98.35 Using where # table scan subquery, filter SEL(=) EXPLAIN SELECT * FROM t1 WHERE t1.col3 IN (SELECT col3 FROM t2 where col3=3); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where 1 SIMPLE <subquery2> NULL eq_ref <auto_key> <auto_key> 5 test.t1.col3 1 100.00 Using where 2 MATERIALIZED t2 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where # range in subquery, no filter EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT col3 FROM t2 where col1_idx>2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 100.00 NULL 2 SUBQUERY t2 NULL range col1_idx col1_idx 5 NULL 1012 100.00 Using index condition # table scan subquery, filter SEL(=) EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT col3 FROM t2 where col3=3); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 100.00 NULL 2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where # range in subquery, filter SEL(=) EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT col3 FROM t2 where col1_idx>2 and col3=3); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 100.00 NULL 2 SUBQUERY t2 NULL range col1_idx col1_idx 5 NULL 1012 10.00 Using index condition; Using where # EXISTS - outer reference # dynamic range subq, filter SEL(>) EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT 1 FROM t2 where col1_idx>t1.col3); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where 2 DEPENDENT SUBQUERY t2 NULL ALL col1_idx NULL NULL NULL 1029 33.33 Range checked for each record (index map: 0x1) # EXPLAIN SELECT * FROM t1 WHERE col3 = (SELECT 1 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col3 <=> (SELECT 1 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col3 > (SELECT 1 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col3 >= (SELECT 1 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col3 < (SELECT 1 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col3 <= (SELECT 1 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col3 between (SELECT 1 FROM t2) and 2; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 11.11 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx = (SELECT 1 FROM t2 LIMIT 1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ref col1_idx col1_idx 5 const 6 100.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx <=> (SELECT 1 FROM t2 LIMIT 1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ref col1_idx col1_idx 5 const 6 100.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx > (SELECT 1 FROM t2 LIMIT 1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL col1_idx NULL NULL NULL 1029 99.42 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx >= (SELECT 1 FROM t2 LIMIT 1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL col1_idx NULL NULL NULL 1029 100.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx < (SELECT 1 FROM t2 LIMIT 1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL range col1_idx col1_idx 5 NULL 1 100.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx <= (SELECT 1 FROM t2 LIMIT 1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL range col1_idx col1_idx 5 NULL 6 100.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx between (SELECT 1 FROM t2 LIMIT 1) and 2; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL range col1_idx col1_idx 5 NULL 12 100.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index set optimizer_switch='semijoin=off'; # table scan in subq, no filter EXPLAIN SELECT * FROM t1 WHERE t1.col3 IN (SELECT col3 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where 2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 1029 100.00 NULL # table scan in subq, filter from range access EXPLAIN SELECT * FROM t1 WHERE t1.col3 IN (SELECT col3 FROM t2 where col1_idx>2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where 2 SUBQUERY t2 NULL ALL col1_idx NULL NULL NULL 1029 98.35 Using where # table scan subquery, filter SEL(=) EXPLAIN SELECT * FROM t1 WHERE t1.col3 IN (SELECT col3 FROM t2 where col3=3); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where 2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where # range in subquery, no filter EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT col3 FROM t2 where col1_idx>2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 100.00 NULL 2 SUBQUERY t2 NULL range col1_idx col1_idx 5 NULL 1012 100.00 Using index condition # table scan subquery, filter SEL(=) EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT col3 FROM t2 where col3=3); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 100.00 NULL 2 SUBQUERY t2 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where # range in subquery, filter SEL(=) EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT col3 FROM t2 where col1_idx>2 and col3=3); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 100.00 NULL 2 SUBQUERY t2 NULL range col1_idx col1_idx 5 NULL 1012 10.00 Using index condition; Using where # EXISTS - outer reference # dynamic range subq, filter SEL(>) EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT 1 FROM t2 where col1_idx>t1.col3); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where 2 DEPENDENT SUBQUERY t2 NULL ALL col1_idx NULL NULL NULL 1029 33.33 Range checked for each record (index map: 0x1) # EXPLAIN SELECT * FROM t1 WHERE col3 = (SELECT 1 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col3 <=> (SELECT 1 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col3 > (SELECT 1 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col3 >= (SELECT 1 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col3 < (SELECT 1 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col3 <= (SELECT 1 FROM t2); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 33.33 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col3 between (SELECT 1 FROM t2) and 2; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL NULL NULL NULL NULL 1029 11.11 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx = (SELECT 1 FROM t2 LIMIT 1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ref col1_idx col1_idx 5 const 6 100.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx <=> (SELECT 1 FROM t2 LIMIT 1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ref col1_idx col1_idx 5 const 6 100.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx > (SELECT 1 FROM t2 LIMIT 1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL col1_idx NULL NULL NULL 1029 99.42 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx >= (SELECT 1 FROM t2 LIMIT 1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL ALL col1_idx NULL NULL NULL 1029 100.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx < (SELECT 1 FROM t2 LIMIT 1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL range col1_idx col1_idx 5 NULL 1 100.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx <= (SELECT 1 FROM t2 LIMIT 1); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL range col1_idx col1_idx 5 NULL 6 100.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index EXPLAIN SELECT * FROM t1 WHERE col1_idx between (SELECT 1 FROM t2 LIMIT 1) and 2; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 NULL range col1_idx col1_idx 5 NULL 12 100.00 Using where 2 SUBQUERY t2 NULL index NULL col1_idx 5 NULL 1029 100.00 Using index set optimizer_switch='semijoin=off'; set optimizer_switch=default; ################ EXPLAIN SELECT * FROM t1 AS t1a JOIN t1 AS t1b ON t1a.col1_idx=t1b.col1_idx WHERE t1b.col3=5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1b NULL ALL col1_idx NULL NULL NULL 1029 10.00 Using where 1 SIMPLE t1a NULL ref col1_idx col1_idx 5 test.t1b.col1_idx 8 100.00 NULL EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.col1_idx=t2.col1_idx WHERE t2.col3=5; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL ALL col1_idx NULL NULL NULL 1029 10.00 Using where 1 SIMPLE t1 NULL ref col1_idx col1_idx 5 test.t2.col1_idx 8 100.00 NULL EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.col1_idx=t2.col1_idx WHERE t1.col3=t2.col3; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL ALL col1_idx NULL NULL NULL 1029 100.00 Using where 1 SIMPLE t1 NULL ref col1_idx col1_idx 5 test.t2.col1_idx 8 10.00 Using where EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.col1_idx=t2.col1_idx WHERE t1.col2_idx=1 AND t2.col2_idx=1; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ref col1_idx,col2_idx col2_idx 5 const 6 100.00 Using where 1 SIMPLE t2 NULL ref col1_idx,col2_idx col1_idx 5 test.t1.col1_idx 8 0.78 Using where EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.col1_idx=t2.col1_idx WHERE t1.col2_idx>1 AND t2.col2_idx>1; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL ALL col1_idx,col2_idx NULL NULL NULL 1029 99.22 Using where 1 SIMPLE t1 NULL ref col1_idx,col2_idx col1_idx 5 test.t2.col1_idx 8 99.42 Using where EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.col1_idx>t2.col1_idx WHERE t1.col2_idx>1 AND t2.col2_idx>1; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL ALL col1_idx,col2_idx NULL NULL NULL 1029 99.22 Using where 1 SIMPLE t1 NULL ALL col1_idx,col2_idx NULL NULL NULL 1029 33.14 Using where; Using join buffer (Block Nested Loop) EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.col1_idx>t2.col1_idx WHERE t1.col1_idx>1 AND t2.col1_idx>1; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL ALL col1_idx NULL NULL NULL 1029 99.22 Using where 1 SIMPLE t1 NULL ALL col1_idx NULL NULL NULL 1029 99.42 Using where; Using join buffer (Block Nested Loop) EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.col1_idx>t2.col1_idx WHERE t1.col1_idx!=1 AND t2.col1_idx>4; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL ALL col1_idx NULL NULL NULL 1029 96.79 Using where 1 SIMPLE t1 NULL ALL col1_idx NULL NULL NULL 1029 99.51 Using where; Using join buffer (Block Nested Loop) EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.col1_idx>t2.col1_idx; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL ALL col1_idx NULL NULL NULL 1029 100.00 NULL 1 SIMPLE t1 NULL ALL col1_idx NULL NULL NULL 1029 33.33 Range checked for each record (index map: 0x1) EXPLAIN SELECT * FROM t1 WHERE col1_idx > 500 AND col2_idx > 500; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL range col1_idx,col2_idx col1_idx 5 NULL 5 1.00 Using index condition; Using where EXPLAIN SELECT * FROM t1 WHERE col1_idx > 120 AND col2_idx > 120; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL range col1_idx,col2_idx col1_idx 5 NULL 128 12.44 Using index condition; Using where EXPLAIN SELECT * FROM t1 WHERE col1_idx IN (120,121,122) AND col2_idx IN (120,121,122); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL range col1_idx,col2_idx col1_idx 5 NULL 13 1.26 Using index condition; Using where # TODO: after wl7019 # EXPLAIN # SELECT * FROM t1 WHERE col1_idx IN (120,121,122); # EXPLAIN # SELECT * FROM t1 WHERE (col1_idx,c) IN ((120,1),(121,2),(122,3)); range on col1_idx and filtering estimate from the range optimizer on col2_idx -> no filtering effect for filter_single_col_small -> very small filtering effect for filter_single_col_big EXPLAIN SELECT * FROM t1 WHERE col1_idx IN (120,121,122) AND col2_idx NOT IN (120,121,122); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL range col1_idx,col2_idx col1_idx 5 NULL 13 98.93 Using index condition; Using where EXPLAIN SELECT * FROM t1 WHERE col1_idx IN (120,121,122) AND col3 IN (120,121,122); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL range col1_idx col1_idx 5 NULL 13 30.00 Using index condition; Using where EXPLAIN SELECT * FROM t1 WHERE col1_idx IN (120,121,122) AND col3 NOT IN (120,121,122); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL range col1_idx col1_idx 5 NULL 13 70.00 Using index condition; Using where EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.col3=t2.col1_idx WHERE t2.col1_idx>20; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 100.00 Using where 1 SIMPLE t2 NULL ref col1_idx col1_idx 5 test.t1.col3 8 100.00 NULL EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.col3=t2.col1_idx WHERE t2.col1_idx=20; id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL ref col1_idx col1_idx 5 const 8 100.00 NULL 1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 1029 10.00 Using where; Using join buffer (Block Nested Loop) DROP TABLE t1,t2; # # Bug#18446462: ASSERT `ROWS >= 0.0' AT # COST_MODEL_SERVER::ROW_EVALUATE_COST IN # OPT_COSTMODEL.H # create table t10 (pk int primary key, i int); insert into t10 values (1,1); insert into t10 select pk+1, i from t10; insert into t10 select pk+2, i from t10; insert into t10 select pk+4, i from t10; insert into t10 select pk+8, i from t10 limit 2; create table t19 (pk int primary key, i int); insert into t19 values (1,1); insert into t19 select pk+1, i from t19; insert into t19 select pk+2, i from t19; insert into t19 select pk+4, i from t19; insert into t19 select pk+8, i from t19; insert into t19 select pk+16, i from t19 limit 3; create table t25 (pk int primary key, i int); insert into t25 values (1,1); insert into t25 select pk+1, i from t25; insert into t25 select pk+2, i from t25; insert into t25 select pk+4, i from t25; insert into t25 select pk+8, i from t25; insert into t25 select pk+16, i from t25 limit 9; set @optimizer_switch_saved=@@optimizer_switch; set optimizer_switch='derived_merge=off'; EXPLAIN SELECT * FROM ( SELECT t10_1.* FROM t10 AS t10_1, t10 AS t10_2, t10 AS t10_3, t10 AS t10_4, t10 AS t10_5, t10 AS t10_6, t25 AS t25_1, t25 AS t25_2, t19 ) 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 11875000000 100.00 NULL 2 DERIVED t10_1 NULL ALL NULL NULL NULL NULL 10 100.00 NULL 2 DERIVED t10_2 NULL index NULL PRIMARY 4 NULL 10 100.00 Using index; Using join buffer (Block Nested Loop) 2 DERIVED t10_3 NULL index NULL PRIMARY 4 NULL 10 100.00 Using index; Using join buffer (Block Nested Loop) 2 DERIVED t10_4 NULL index NULL PRIMARY 4 NULL 10 100.00 Using index; Using join buffer (Block Nested Loop) 2 DERIVED t10_5 NULL index NULL PRIMARY 4 NULL 10 100.00 Using index; Using join buffer (Block Nested Loop) 2 DERIVED t10_6 NULL index NULL PRIMARY 4 NULL 10 100.00 Using index; Using join buffer (Block Nested Loop) 2 DERIVED t19 NULL index NULL PRIMARY 4 NULL 19 100.00 Using index; Using join buffer (Block Nested Loop) 2 DERIVED t25_1 NULL index NULL PRIMARY 4 NULL 25 100.00 Using index; Using join buffer (Block Nested Loop) 2 DERIVED t25_2 NULL index NULL PRIMARY 4 NULL 25 100.00 Using index; Using join buffer (Block Nested Loop) Warnings: Note 1003 /* select#1 */ select `d`.`pk` AS `pk`,`d`.`i` AS `i` from (/* select#2 */ select `test`.`t10_1`.`pk` AS `pk`,`test`.`t10_1`.`i` AS `i` from `test`.`t10` `t10_1` join `test`.`t10` `t10_2` join `test`.`t10` `t10_3` join `test`.`t10` `t10_4` join `test`.`t10` `t10_5` join `test`.`t10` `t10_6` join `test`.`t25` `t25_1` join `test`.`t25` `t25_2` join `test`.`t19`) `d` set optimizer_switch=@optimizer_switch_saved; DROP TABLE t10; DROP TABLE t19; DROP TABLE t25;
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