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 : innodb_mysql_lock2.result
# # Test how do we handle locking in various cases when # we read data from InnoDB tables. # # In fact by performing this test we check two things: # 1) That SQL-layer correctly determine type of thr_lock.c # lock to be acquired/passed to InnoDB engine. # 2) That InnoDB engine correctly interprets this lock # type and takes necessary row locks or does not # take them if they are not necessary. # # This test makes sense only in REPEATABLE-READ mode as # in SERIALIZABLE mode all statements that read data take # shared lock on them to enforce its semantics. select @@session.tx_isolation; @@session.tx_isolation REPEATABLE-READ Warnings: Warning 1287 '@@tx_isolation' is deprecated and will be removed in a future release. Please use '@@transaction_isolation' instead # Prepare playground by creating tables, views, # routines and triggers used in tests. drop table if exists t0, t1, t2, t3, t4, t5; drop view if exists v1, v2; drop procedure if exists p1; drop procedure if exists p2; drop function if exists f1; drop function if exists f2; drop function if exists f3; drop function if exists f4; drop function if exists f5; drop function if exists f6; drop function if exists f7; drop function if exists f8; drop function if exists f9; drop function if exists f10; drop function if exists f11; drop function if exists f12; drop function if exists f13; drop function if exists f14; drop function if exists f15; create table t1 (i int primary key) engine=innodb; insert into t1 values (1), (2), (3), (4), (5); create table t2 (j int primary key) engine=innodb; insert into t2 values (1), (2), (3), (4), (5); create table t3 (k int primary key) engine=innodb; insert into t3 values (1), (2), (3); create table t4 (l int primary key) engine=innodb; insert into t4 values (1); create table t5 (l int primary key) engine=innodb; insert into t5 values (1); create view v1 as select i from t1; create view v2 as select j from t2 where j in (select i from t1); create procedure p1(k int) insert into t2 values (k); create function f1() returns int begin declare j int; select i from t1 where i = 1 into j; return j; end| create function f2() returns int begin declare k int; select i from t1 where i = 1 into k; insert into t2 values (k + 5); return 0; end| create function f3() returns int begin return (select i from t1 where i = 3); end| create function f4() returns int begin if (select i from t1 where i = 3) then return 1; else return 0; end if; end| create function f5() returns int begin insert into t2 values ((select i from t1 where i = 1) + 5); return 0; end| create function f6() returns int begin declare k int; select i from v1 where i = 1 into k; return k; end| create function f7() returns int begin declare k int; select j from v2 where j = 1 into k; return k; end| create function f8() returns int begin declare k int; select i from v1 where i = 1 into k; insert into t2 values (k+5); return k; end| create function f9() returns int begin update v2 set j=j+10 where j=1; return 1; end| create function f10() returns int begin return f1(); end| create function f11() returns int begin declare k int; set k= f1(); insert into t2 values (k+5); return k; end| create function f12(p int) returns int begin insert into t2 values (p); return p; end| create function f13(p int) returns int begin return p; end| create procedure p2(inout p int) begin select i from t1 where i = 1 into p; end| create function f14() returns int begin declare k int; call p2(k); insert into t2 values (k+5); return k; end| create function f15() returns int begin declare k int; call p2(k); return k; end| create trigger t4_bi before insert on t4 for each row begin declare k int; select i from t1 where i=1 into k; set new.l= k+1; end| create trigger t4_bu before update on t4 for each row begin if (select i from t1 where i=1) then set new.l= 2; end if; end| create trigger t4_bd before delete on t4 for each row begin if !(select i from v1 where i=1) then signal sqlstate '45000'; end if; end| create trigger t5_bi before insert on t5 for each row begin set new.l= f1()+1; end| create trigger t5_bu before update on t5 for each row begin declare j int; call p2(j); set new.l= j + 1; end| # # Set common variables to be used by scripts called below. # # # 1. Statements that read tables and do not use subqueries. # # # 1.1 Simple SELECT statement. # # No locks are necessary as this statement won't be written # to the binary log and InnoDB supports snapshots. Success: 'select * from t1' doesn't take row locks on 't1'. # # 1.2 Multi-UPDATE statement. # # Has to take shared locks on rows in the table being read as this # statement will be written to the binary log and therefore should # be serialized with concurrent statements. Success: 'update t2, t1 set j= j - 1 where i = j' takes shared row locks on 't1'. # # 1.3 Multi-DELETE statement. # # The above is true for this statement as well. Success: 'delete t2 from t1, t2 where i = j' takes shared row locks on 't1'. # # 1.4 DESCRIBE statement. # # This statement does not really read data from the # target table and thus does not take any lock on it. # We check this for completeness of coverage. Success: 'describe t1' doesn't take row locks on 't1'. # # 1.5 SHOW statements. # # The above is true for SHOW statements as well. Success: 'show create table t1' doesn't take row locks on 't1'. Success: 'show keys from t1' doesn't take row locks on 't1'. # # 2. Statements which read tables through subqueries. # # # 2.1 CALL with a subquery. # # A strong lock is not necessary as this statement is not # written to the binary log as a whole (it is written # statement-by-statement) and thanks to MVCC we can always get # versions of rows prior to the update that has locked them. # But in practice InnoDB does locking reads for all statements # other than SELECT (unless it is a READ-COMITTED mode or # innodb_locks_unsafe_for_binlog is ON). Success: 'call p1((select i + 5 from t1 where i = 1))' takes shared row locks on 't1'. # # 2.2 CREATE TABLE with a subquery. # # Has to take shared locks on rows in the table being read as # this statement is written to the binary log and therefore # should be serialized with concurrent statements. Success: 'create table t0 engine=innodb select * from t1' takes shared row locks on 't1'. drop table t0; Success: 'create table t0 engine=innodb select j from t2 where j in (select i from t1)' takes shared row locks on 't1'. drop table t0; # # 2.3 DELETE with a subquery. # # The above is true for this statement as well. Success: 'delete from t2 where j in (select i from t1)' takes shared row locks on 't1'. # # 2.4 MULTI-DELETE with a subquery. # # Same is true for this statement as well. Success: 'delete t2 from t3, t2 where k = j and j in (select i from t1)' takes shared row locks on 't1'. # # 2.5 DO with a subquery. # # In theory should not take row locks as it is not logged. # In practice InnoDB takes shared row locks. Success: 'do (select i from t1 where i = 1)' takes shared row locks on 't1'. # # 2.6 INSERT with a subquery. # # Has to take shared locks on rows in the table being read as # this statement is written to the binary log and therefore # should be serialized with concurrent statements. Success: 'insert into t2 select i+5 from t1' takes shared row locks on 't1'. Success: 'insert into t2 values ((select i+5 from t1 where i = 4))' takes shared row locks on 't1'. # # 2.7 LOAD DATA with a subquery. # # The above is true for this statement as well. Success: 'load data infile '../../std_data/rpl_loaddata.dat' into table t2 (@a, @b) set j= @b + (select i from t1 where i = 1)' takes shared row locks on 't1'. # # 2.8 REPLACE with a subquery. # # Same is true for this statement as well. Success: 'replace into t2 select i+5 from t1' takes shared row locks on 't1'. Success: 'replace into t2 values ((select i+5 from t1 where i = 4))' takes shared row locks on 't1'. # # 2.9 SELECT with a subquery. # # Locks are not necessary as this statement is not written # to the binary log and thanks to MVCC we can always get # versions of rows prior to the update that has locked them. # # Also serves as a test case for bug #46947 "Embedded SELECT # without FOR UPDATE is causing a lock". Success: 'select * from t2 where j in (select i from t1)' doesn't take row locks on 't1'. # # 2.10 SET with a subquery. # # In theory should not require locking as it is not written # to the binary log. In practice InnoDB acquires shared row # locks. Success: 'set @a:= (select i from t1 where i = 1)' takes shared row locks on 't1'. # # 2.11 SHOW with a subquery. # # Similarly to the previous case, in theory should not require locking # as it is not written to the binary log. In practice InnoDB # acquires shared row locks. Success: 'show tables from test where Tables_in_test = 't2' and (select i from t1 where i = 1)' takes shared row locks on 't1'. Success: 'show columns from t2 where (select i from t1 where i = 1)' takes shared row locks on 't1'. # # 2.12 UPDATE with a subquery. # # Has to take shared locks on rows in the table being read as # this statement is written to the binary log and therefore # should be serialized with concurrent statements. Success: 'update t2 set j= j-10 where j in (select i from t1)' takes shared row locks on 't1'. # # 2.13 MULTI-UPDATE with a subquery. # # Same is true for this statement as well. Success: 'update t2, t3 set j= j -10 where j=k and j in (select i from t1)' takes shared row locks on 't1'. # # 3. Statements which read tables through a view. # # # 3.1 SELECT statement which uses some table through a view. # # Since this statement is not written to the binary log # and old version of rows are accessible thanks to MVCC, # no locking is necessary. Success: 'select * from v1' doesn't take row locks on 't1'. Success: 'select * from v2' doesn't take row locks on 't1'. Success: 'select * from t2 where j in (select i from v1)' doesn't take row locks on 't1'. Success: 'select * from t3 where k in (select j from v2)' doesn't take row locks on 't1'. # # 3.2 Statements which modify a table and use views. # # Since such statements are going to be written to the binary # log they need to be serialized against concurrent statements # and therefore should take shared row locks on data read. Success: 'update t2 set j= j-10 where j in (select i from v1)' takes shared row locks on 't1'. Success: 'update t3 set k= k-10 where k in (select j from v2)' takes shared row locks on 't1'. Success: 'update t2, v1 set j= j-10 where j = i' takes shared row locks on 't1'. Success: 'update v2 set j= j-10 where j = 3' takes shared row locks on 't1'. # # 4. Statements which read tables through stored functions. # # # 4.1 SELECT/SET with a stored function which does not # modify data and uses SELECT in its turn. # # There is no need to take row locks on the table # being selected from in SF as the call to such function # won't get into the binary log. # # However in practice innodb takes strong lock on tables # being selected from within SF, when SF is called from # non SELECT statements like 'set' statement below. Success: 'select f1()' doesn't take row locks on 't1'. Success: 'set @a:= f1()' takes shared row locks on 't1'. # # 4.2 INSERT (or other statement which modifies data) with # a stored function which does not modify data and uses # SELECT. # # Since such statement is written to the binary log it should # be serialized with concurrent statements affecting the data # it uses. Therefore it should take row locks on the data # it reads. Success: 'insert into t2 values (f1() + 5)' takes shared row locks on 't1'. # # 4.3 SELECT/SET with a stored function which # reads and modifies data. # # Since a call to such function is written to the binary log, # it should be serialized with concurrent statements affecting # the data it uses. Hence, row locks on the data read # should be taken. Success: 'select f2()' takes shared row locks on 't1'. Success: 'set @a:= f2()' takes shared row locks on 't1'. # # 4.4. SELECT/SET with a stored function which does not # modify data and reads a table through subselect # in a control construct. # # Call to this function won't get to the # binary log and thus no locking is needed. # # However in practice innodb takes strong lock on tables # being selected from within SF, when SF is called from # non SELECT statements like 'set' statement below. Success: 'select f3()' doesn't take row locks on 't1'. Success: 'set @a:= f3()' takes shared row locks on 't1'. Success: 'select f4()' doesn't take row locks on 't1'. Success: 'set @a:= f4()' takes shared row locks on 't1'. # # 4.5. INSERT (or other statement which modifies data) with # a stored function which does not modify data and reads # the table through a subselect in one of its control # constructs. # # Since such statement is written to the binary log it should # be serialized with concurrent statements affecting data it # uses. Therefore it should take row locks on the data # it reads. Success: 'insert into t2 values (f3() + 5)' takes shared row locks on 't1'. Success: 'insert into t2 values (f4() + 6)' takes shared row locks on 't1'. # # 4.6 SELECT/SET which uses a stored function with # DML which reads a table via a subquery. # # Since call to such function is written to the binary log # it should be serialized with concurrent statements. # Hence reads should take row locks. Success: 'select f5()' takes shared row locks on 't1'. Success: 'set @a:= f5()' takes shared row locks on 't1'. # # 4.7 SELECT/SET which uses a stored function which # doesn't modify data and reads tables through # a view. # # Calls to such functions won't get into # the binary log and thus don't need row locks. # # However in practice innodb takes strong lock on tables # being selected from within SF, when SF is called from # non SELECT statements like 'set' statement below. Success: 'select f6()' doesn't take row locks on 't1'. Success: 'set @a:= f6()' takes shared row locks on 't1'. Success: 'select f7()' doesn't take row locks on 't1'. Success: 'set @a:= f7()' takes shared row locks on 't1'. # # 4.8 INSERT which uses stored function which # doesn't modify data and reads a table # through a view. # # Since such statement is written to the binary log and # should be serialized with concurrent statements affecting # the data it uses. Therefore it should take row locks on # the rows it reads. Success: 'insert into t3 values (f6() + 5)' takes shared row locks on 't1'. Success: 'insert into t3 values (f7() + 5)' takes shared row locks on 't1'. # # 4.9 SELECT which uses a stored function which # modifies data and reads tables through a view. # # Since a call to such function is written to the binary log # it should be serialized with concurrent statements. # Hence, reads should take row locks. Success: 'select f8()' takes shared row locks on 't1'. Success: 'select f9()' takes shared row locks on 't1'. # # 4.10 SELECT which uses stored function which doesn't modify # data and reads a table indirectly, by calling another # function. # # Calls to such functions won't get into the binary # log and thus don't need to acquire row locks. Success: 'select f10()' doesn't take row locks on 't1'. # # 4.11 INSERT which uses a stored function which doesn't modify # data and reads a table indirectly, by calling another # function. # # Since such statement is written to the binary log, it should # be serialized with concurrent statements affecting the data it # uses. Therefore it should take row locks on data it reads. Success: 'insert into t2 values (f10() + 5)' takes shared row locks on 't1'. # # 4.12 SELECT which uses a stored function which modifies # data and reads a table indirectly, by calling another # function. # # Since a call to such function is written to the binary log # it should be serialized from concurrent statements. # Hence, reads should take row locks. Success: 'select f11()' takes shared row locks on 't1'. # # 4.13 SELECT that reads a table through a subquery passed # as a parameter to a stored function which modifies # data. # # Even though a call to this function is written to the # binary log, values of its parameters are written as literals. # So there is no need to acquire row locks on rows used in # the subquery. Success: 'select f12((select i+10 from t1 where i=1))' doesn't take row locks on 't1'. # # 4.14 INSERT that reads a table via a subquery passed # as a parameter to a stored function which doesn't # modify data. # # Since this statement is written to the binary log it should # be serialized with concurrent statements affecting the data it # uses. Therefore it should take row locks on the data it reads. Success: 'insert into t2 values (f13((select i+10 from t1 where i=1)))' takes shared row locks on 't1'. # # 5. Statements that read tables through stored procedures. # # # 5.1 CALL statement which reads a table via SELECT. # # Since neither this statement nor its components are # written to the binary log, there is no need to take # row locks on the data it reads. Success: 'call p2(@a)' doesn't take row locks on 't1'. # # 5.2 Function that modifies data and uses CALL, # which reads a table through SELECT. # # Since a call to such function is written to the binary # log, it should be serialized with concurrent statements. # Hence, in this case reads should take row locks on data. Success: 'select f14()' takes shared row locks on 't1'. # # 5.3 SELECT that calls a function that doesn't modify data and # uses a CALL statement that reads a table via SELECT. # # Calls to such functions won't get into the binary # log and thus don't need to acquire row locks. Success: 'select f15()' doesn't take row locks on 't1'. # # 5.4 INSERT which calls function which doesn't modify data and # uses CALL statement which reads table through SELECT. # # Since such statement is written to the binary log it should # be serialized with concurrent statements affecting data it # uses. Therefore it should take row locks on data it reads. Success: 'insert into t2 values (f15()+5)' takes shared row locks on 't1'. # # 6. Statements that use triggers. # # # 6.1 Statement invoking a trigger that reads table via SELECT. # # Since this statement is written to the binary log it should # be serialized with concurrent statements affecting the data # it uses. Therefore, it should take row locks on the data # it reads. Success: 'insert into t4 values (2)' takes shared row locks on 't1'. # # 6.2 Statement invoking a trigger that reads table through # a subquery in a control construct. # # The above is true for this statement as well. Success: 'update t4 set l= 2 where l = 1' takes shared row locks on 't1'. # # 6.3 Statement invoking a trigger that reads a table through # a view. # # And for this statement. Success: 'delete from t4 where l = 1' takes shared row locks on 't1'. # # 6.4 Statement invoking a trigger that reads a table through # a stored function. # # And for this statement. Success: 'insert into t5 values (2)' takes shared row locks on 't1'. # # 6.5 Statement invoking a trigger that reads a table through # stored procedure. # # And for this statement. Success: 'update t5 set l= 2 where l = 1' takes shared row locks on 't1'. # Clean-up. drop function f1; drop function f2; drop function f3; drop function f4; drop function f5; drop function f6; drop function f7; drop function f8; drop function f9; drop function f10; drop function f11; drop function f12; drop function f13; drop function f14; drop function f15; drop view v1, v2; drop procedure p1; drop procedure p2; drop table t1, t2, t3, t4, t5; # # Test for bug#51263 "Deadlock between transactional SELECT # and ALTER TABLE ... REBUILD PARTITION". # drop table if exists t1, t2; create table t1 (i int auto_increment not null primary key) engine=innodb; create table t2 (i int) engine=innodb; insert into t1 values (1), (2), (3), (4), (5); begin; # Acquire SR metadata lock on t1 and LOCK_S row-locks on its rows. insert into t2 select count(*) from t1; # Switching to connection 'con1'. # Sending: alter table t1 add column j int; # Switching to connection 'default'. # Wait until ALTER is blocked because it tries to upgrade SNW # metadata lock to X lock. # It should not be blocked during copying data to new version of # table as it acquires LOCK_S locks on rows of old version, which # are compatible with locks acquired by connection 'con1'. # The below statement will deadlock because it will try to acquire # SW lock on t1, which will conflict with ALTER's SNW lock. And # ALTER will be waiting for this connection to release its SR lock. # This deadlock should be detected by an MDL subsystem and this # statement should be aborted with an appropriate error. insert into t1 values (6); ERROR 40001: Deadlock found when trying to get lock; try restarting transaction # Unblock ALTER TABLE. commit; # Switching to connection 'con1'. # Reaping ALTER TABLE. # Switching to connection 'default'. # # Now test for scenario in which bug was reported originally. # drop tables t1, t2; create table t1 (i int auto_increment not null primary key) engine=innodb partition by hash (i) partitions 4; create table t2 (i int) engine=innodb; insert into t1 values (1), (2), (3), (4), (5); begin; # Acquire SR metadata lock on t1. select * from t1; i 4 1 5 2 3 # Switching to connection 'con1'. # Sending: alter table t1 rebuild partition p0; # Switching to connection 'default'. # Wait until ALTER is blocked because of active SR lock. # The below statement should succeed as transaction # has SR metadata lock on t1 and only going to read # rows from it. insert into t2 select count(*) from t1; # Unblock ALTER TABLE. commit; # Switching to connection 'con1'. # Reaping ALTER TABLE. # Switching to connection 'default'. # Clean-up. drop tables t1, t2;
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