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[ HOME SHELL ]
Name
Size
Permission
Action
Load_data.inc
173
B
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add_anonymous_users.inc
194
B
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add_debug_point.inc
3.11
KB
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allowed_ciphers.inc
409
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analyze-sync_with_master.test
283
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analyze-timeout.test
25
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assert.inc
2.38
KB
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assert_and_disable_read_only.i...
1.05
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assert_binlog_events.inc
10.22
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assert_command_output.inc
2.45
KB
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assert_grep.inc
4.17
KB
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assert_gtid_mode_on.inc
250
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assert_logical_timestamps.inc
2.63
KB
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assert_no_warnings.inc
977
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assert_rbr_only_flags.inc
2.46
KB
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assert_semisync_master_status_...
273
B
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assert_semisync_master_status_...
271
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assert_semisync_yesno_tx_incre...
1.23
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assert_status.inc
1.03
KB
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assert_variable.inc
892
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backup_tables_priv_and_users.i...
1.06
KB
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begin_include_file.inc
3.21
KB
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begin_replace_gtid_combination...
2.07
KB
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big_test.inc
107
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binlog_inject_error.inc
641
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bug13581713.inc
6.62
KB
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bug38347.inc
404
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change_file_perms.inc
521
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check-testcase.test
2.98
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check-warnings.test
1.74
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check_charset.inc
3.53
KB
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check_concurrent_insert.inc
2.66
KB
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check_events_off.inc
1.82
KB
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check_ftwrl_compatible.inc
3.64
KB
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check_ftwrl_incompatible.inc
3.8
KB
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check_ipv4_mapped.inc
683
B
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check_ipv6.inc
597
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check_key_reads.inc
250
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check_key_req.inc
628
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check_keys_after_migration.inc
2.17
KB
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check_no_concurrent_insert.inc
2.07
KB
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check_no_row_lock.inc
1.76
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check_openssl_version.inc
1.32
KB
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check_plugin_dir.inc
1.39
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check_qep.inc
1.35
KB
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check_shared_row_lock.inc
1.39
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check_slave_is_running.inc
750
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check_slave_no_error.inc
754
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check_slave_param.inc
1.33
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check_var_limit.inc
394
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cleanup_fake_relay_log.inc
669
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cleanup_folder.inc
155
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commandline_option_test.inc
799
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commit.inc
22.71
KB
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commit_crash_restart.inc
268
B
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common-tests.inc
116.44
KB
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concurrent.inc
25.06
KB
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cond_filter_queries.inc
9.16
KB
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config_file_option_test.inc
783
B
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connect2.inc
977
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count_sessions.inc
389
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create_575_part_table.inc
1.03
KB
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create_table.inc
135
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ctype_8bit.inc
2.85
KB
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ctype_ascii_order.inc
1.04
KB
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ctype_common.inc
2.83
KB
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ctype_czech.inc
437
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ctype_datetime.inc
333
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ctype_filesort.inc
377
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ctype_filesort2.inc
1006
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ctype_german.inc
1.42
KB
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ctype_heap.inc
479
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ctype_inet.inc
450
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ctype_innodb_like.inc
665
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ctype_like.inc
1.36
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ctype_like_escape.inc
592
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ctype_like_ignorable.inc
427
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ctype_like_range_f1f2.inc
835
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ctype_numconv.inc
44.86
KB
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ctype_pad_space.inc
133
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ctype_regex.inc
1.18
KB
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ctype_unicode520.inc
7.13
KB
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ctype_unicode_latin.inc
10.23
KB
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ctype_utf8_table.inc
1.35
KB
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ctype_utf8mb4.inc
60.36
KB
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daemon_example_bad_format.ini
215
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daemon_example_bad_soname.ini
227
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ddl_i18n.check_events.inc
864
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ddl_i18n.check_sp.inc
1.48
KB
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ddl_i18n.check_triggers.inc
1.71
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ddl_i18n.check_views.inc
544
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deadlock.inc
3.59
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default_client.cnf
367
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default_my.cnf
544
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default_mysqld.cnf
2.89
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default_mysqld_autosize.cnf
1.87
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default_ndbd.cnf
1.59
KB
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delete_all_rows.inc
3.15
KB
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delete_anonymous_users.inc
207
B
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diff_servers.inc
2.2
KB
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diff_tables.inc
7.55
KB
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disconnect_connections.inc
350
B
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end_include_file.inc
2.43
KB
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end_replace_gtid_combination.i...
779
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endspace.inc
338
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escape_sql.inc
1.52
KB
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eval.inc
5.73
KB
-rw-r--r--
execute_at_sync_point.inc
3.55
KB
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execute_from_sync_point.inc
1.96
KB
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execute_from_sync_point_with_e...
1.93
KB
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execute_to_sync_point.inc
2.34
KB
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execute_with_statistics.inc
772
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expect_crash.inc
214
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expect_qep.inc
1.19
KB
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explain.inc
11.17
KB
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explain_for_connection.inc
1.68
KB
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explain_for_connection_rqg.inc
200.97
KB
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explain_for_connection_small.i...
22.17
KB
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explain_json.inc
10.93
KB
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explain_non_select.inc
30.23
KB
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explain_other.inc
1.03
KB
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explain_run_count.inc
93
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explain_utils.inc
5.15
KB
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file_does_not_exist.inc
340
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filter_file.inc
5.12
KB
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finish_option_test.inc
235
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force_binlog_format_statement....
204
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force_myisam_default.inc
207
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force_restart.inc
335
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force_restart_if_skipped.inc
346
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freebsd.inc
107
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func_aes_block.inc
3.95
KB
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func_in.inc
18.06
KB
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function_defaults.inc
34.97
KB
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generate_keys_before_migration...
2.16
KB
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get_file_permissions.inc
274
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get_frm_info.inc
2.67
KB
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get_handler_status_counts.inc
143
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get_ndb_epochs.inc
2.12
KB
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get_relay_log_pos.inc
2.77
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get_row_count.inc
1.96
KB
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gis_debug.inc
8.41
KB
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gis_generic.inc
13.64
KB
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gis_keys.inc
1.97
KB
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grant_cache.inc
7.6
KB
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greedy_search_drop_tables.inc
167
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greedy_search_load_tables.inc
996
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grep_pattern.inc
2.08
KB
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group_by_fd.inc
29.2
KB
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group_replication_timeouts.inc
255
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gtid_prepare_and_execute_stmt....
839
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gtid_step_assert.inc
4.62
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gtid_step_assert_on_retrieved....
3.73
KB
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gtid_step_reset.inc
476
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gtid_step_reset_on_retrieved.i...
565
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gtid_utils.inc
15.49
KB
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gtid_utils_end.inc
993
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handler.inc
49.53
KB
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have_32bit.inc
428
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have_64bit.inc
357
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have_QC_Disabled.inc
137
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have_archive.inc
180
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have_archive_plugin.inc
413
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have_audit_log_plugin.inc
688
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have_big5.inc
107
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have_binlog_checksum_off.inc
236
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have_binlog_format_mixed.inc
155
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have_binlog_format_mixed_or_ro...
181
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have_binlog_format_mixed_or_st...
193
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have_binlog_format_row.inc
153
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have_binlog_format_row_or_stat...
192
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have_binlog_format_statement.i...
159
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have_binlog_order_commits.test
308
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have_blackhole.inc
173
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have_blackhole_plugin.inc
427
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have_case_insensitive_file_sys...
134
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have_case_sensitive_file_syste...
132
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have_compress.inc
109
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have_cp1250_ch.inc
112
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have_cp1251.inc
115
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have_cp866.inc
113
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have_cp932.inc
110
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have_crypt.inc
103
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have_daemon_example_plugin.inc
387
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have_debug.inc
113
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have_debug_sync.inc
196
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have_dynamic_loading.inc
221
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have_engine_condition_pushdown...
170
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have_eucjpms.inc
114
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have_euckr.inc
108
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have_example_plugin.inc
566
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have_exampledb.inc
178
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have_expect.inc
628
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have_federated_plugin.inc
151
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have_firstmatch.inc
155
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have_gb18030.inc
113
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have_gb2312.inc
111
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have_gbk.inc
105
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have_geometry.inc
110
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have_grep.inc
319
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have_group_replication_plugin....
1.39
KB
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have_gtid.inc
378
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have_index_condition_pushdown....
169
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have_innochecksum_debug.inc
385
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have_innodb.inc
163
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have_innodb_16k.inc
231
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have_innodb_32k.inc
194
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have_innodb_4k.inc
229
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have_innodb_64k.inc
194
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have_innodb_8k.inc
229
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have_innodb_max_16k.inc
212
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have_innodb_zip.inc
216
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have_ipv4_mapped.inc
289
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have_ipv6.inc
339
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have_koi8r.inc
113
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have_latin2_ch.inc
112
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have_local_infile.inc
111
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have_log_bin.inc
314
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have_loosescan.inc
154
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have_lowercase0.inc
116
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have_lowercase1.inc
116
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have_lowercase2.inc
116
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have_materialization.inc
160
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have_max_indexes_128.inc
126
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have_max_indexes_64.inc
126
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have_mecab.inc
630
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have_memcached_plugin.inc
69
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have_mrr.inc
148
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have_multi_ndb.inc
2.02
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have_myisam.inc
285
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have_mysql_no_login_plugin.inc
674
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have_mysql_upgrade.inc
134
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have_mysqld_safe.inc
756
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have_mysqlx_plugin.inc
70
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have_ndb.inc
659
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have_ndb_debug.inc
551
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have_ndb_extra.inc
65
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have_ndbapi_examples.inc
148
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have_ngram.inc
157
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have_no_undo_tablespaces.inc
195
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have_nodebug.inc
115
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have_not_innodb_plugin.inc
185
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have_null_audit_plugin.inc
701
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have_numa.inc
244
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have_openssl.inc
139
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have_openssl_binary.inc
1.48
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have_openssl_support.inc
197
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have_openssl_version_1.1.0.inc
1.39
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have_optimizer_trace.inc
291
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have_outfile.inc
171
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have_partition.inc
193
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have_partition_open_file_limit...
605
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have_perfschema.inc
146
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have_plugin_auth.inc
188
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have_plugin_interface.inc
187
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have_plugin_server.inc
178
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have_profiling.inc
112
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have_punch_hole.inc
813
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have_query_cache.inc
115
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have_query_cache_disabled.inc
1.01
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have_replication_observers_exa...
988
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have_semijoin.inc
153
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have_semisync_plugin.inc
594
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have_sha256_rsa_auth.inc
305
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have_shm.inc
169
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have_simple_parser.inc
662
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have_sjis.inc
108
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have_slave_parallel_type_datab...
253
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have_slave_parallel_type_logic...
263
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have_slave_repository_type_fil...
241
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have_slave_repository_type_tab...
240
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have_ssl.inc
136
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have_ssl_communication.inc
136
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have_ssl_crypto_functs.inc
408
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have_statement_timeout.inc
127
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have_symlink.inc
291
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have_tis620.inc
108
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have_ucs2.inc
107
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have_udf.inc
630
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have_ujis.inc
108
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have_undo_tablespaces.inc
211
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have_utf16.inc
109
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have_utf32.inc
109
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have_utf8.inc
111
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have_utf8mb4.inc
117
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have_util_nc.inc
930
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have_util_unzip.inc
706
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have_valgrind.inc
182
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have_validate_password_plugin....
703
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ib_logfile_size_check.inc
278
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icp_tests.inc
25.61
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if_encrypted.inc
845
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implicit_commit_helper.inc
123
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index_merge1.inc
23.14
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index_merge2.inc
13.6
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index_merge_2sweeps.inc
1.58
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index_merge_delete.inc
6.1
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index_merge_insert-and-replace...
3.59
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index_merge_intersect_dml.inc
5.41
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index_merge_multi_col_setup.in...
1.25
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index_merge_ror.inc
11.76
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index_merge_ror_cpk.inc
17.85
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index_merge_single_col_setup.i...
1.2
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index_merge_update.inc
4.56
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init_option_test.inc
238
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innodb-index.inc
1.2
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innodb-util.inc
3.47
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innodb_gis_row_format_basic.in...
20.29
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innodb_gis_undo.inc
293.94
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innodb_pk_extension.inc
10.18
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innodb_rollback_on_timeout.inc
931
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Code Editor : explain_json.inc
# This file is a collection of regression and coverage tests # for WL#5855: Print EXPLAIN in JSON format --source include/have_innodb.inc set @save_storage_engine= @@default_storage_engine; set default_storage_engine=MyISAM; set end_markers_in_json=on; --echo # new "FORMAT" keyword doesn't conflict with the FORMAT() function name: SELECT FORMAT(1, 2), FORMAT(1, 2, 3); --echo # new "FORMAT" keyword is a valid identifier: SET @FORMAT=10; SELECT @FORMAT; CREATE TABLE t1 (format INT); SELECT format FROM t1; DROP TABLE t1; --echo # different ways of format name writing: EXPLAIN FORMAT=traditional SELECT 1; EXPLAIN FORMAT='TrAdItIoNaL' SELECT 1; EXPLAIN FORMAT=JSON SELECT 1; --error ER_UNKNOWN_EXPLAIN_FORMAT EXPLAIN FORMAT=foo SELECT 1; --echo # various EXPLAIN output CREATE TABLE t1 (i INT); CREATE TABLE t2 (i INT); CREATE TABLE t3 (i INT); CREATE TABLE t4 (i INT); --echo # no end markers in JSON: set end_markers_in_json=off; EXPLAIN FORMAT=JSON SELECT * FROM t1; set end_markers_in_json=on; EXPLAIN INSERT INTO t1 VALUES (10); EXPLAIN FORMAT=JSON INSERT INTO t1 VALUES (10); EXPLAIN SELECT * FROM t1; PREPARE stmt FROM 'EXPLAIN FORMAT=JSON SELECT * FROM t1'; EXECUTE stmt; EXECUTE stmt; INSERT INTO t1 VALUES (1), (2), (3), (4), (5), (6), (7); INSERT INTO t2 VALUES (1), (2); --echo # Check materialized derived table set @optimizer_switch_saved= @@optimizer_switch; set optimizer_switch='derived_merge=off'; EXPLAIN SELECT * FROM (SELECT * FROM (SELECT * FROM (SELECT a1.i FROM (SELECT * FROM t1) a1, t2) a2) a3) a4; EXPLAIN FORMAT=JSON SELECT * FROM (SELECT * FROM (SELECT * FROM (SELECT a1.i FROM (SELECT * FROM t1) a1, t2) a2) a3) a4; set optimizer_switch= @optimizer_switch_saved; --echo # subquery in WHERE EXPLAIN SELECT * FROM t1 WHERE i IN (SELECT i FROM t2 WHERE t1.i = 10 ORDER BY RAND()); EXPLAIN FORMAT=JSON SELECT * FROM t1 WHERE i IN (SELECT i FROM t2 WHERE t1.i = 10 ORDER BY RAND()); --echo # two subqueries in WHERE EXPLAIN SELECT * FROM t1 WHERE i IN (SELECT i FROM t2 WHERE t1.i = 10 ORDER BY RAND()) OR i IN (SELECT i FROM t4 ORDER BY RAND()); EXPLAIN FORMAT=JSON SELECT * FROM t1 WHERE i IN (SELECT i FROM t2 WHERE t1.i = 10 ORDER BY RAND()) OR i IN (SELECT i FROM t4 ORDER BY RAND()); --echo # simple UNION EXPLAIN SELECT * FROM t1 UNION SELECT * FROM t2 UNION SELECT * FROM t3; EXPLAIN FORMAT=JSON SELECT * FROM t1 UNION SELECT * FROM t2 UNION SELECT * FROM t3; --echo # more complex UNION EXPLAIN (SELECT t1.i FROM t1 JOIN t2) UNION ALL (SELECT * FROM t3 WHERE i IN (SELECT i FROM t4 ORDER BY RAND())); EXPLAIN FORMAT=JSON (SELECT t1.i FROM t1 JOIN t2) UNION ALL (SELECT * FROM t3 WHERE i IN (SELECT i FROM t4 ORDER BY RAND())); --echo # UNION with subquery in outer ORDER BY EXPLAIN (SELECT * FROM t1) UNION (SELECT * FROM t2) ORDER BY (SELECT i LIMIT 1); EXPLAIN FORMAT=JSON (SELECT * FROM t1) UNION (SELECT * FROM t2) ORDER BY (SELECT i LIMIT 1); --echo # optimizer-time subquery --let $query=SELECT * FROM t1 ORDER BY (SELECT LENGTH(1) FROM t2 LIMIT 1) --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query --echo # subquery in the HAVING clause --let $query=SELECT * FROM t1 HAVING i > ALL (SELECT i FROM t2) OR i < ALL (SELECT i FROM t2); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query --echo # subquery in the GROUP BY clause --source include/turn_off_only_full_group_by.inc --let $query=SELECT * FROM t1 GROUP BY i > ALL (SELECT i FROM t2) OR i < ALL (SELECT i FROM t2); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query --source include/restore_sql_mode_after_turn_off_only_full_group_by.inc --echo # subquery in the SELECT list --let $query=SELECT (SELECT i + 1 FROM t1 ORDER BY RAND() LIMIT 1), i FROM t1; --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query DROP TABLE t1, t2, t3, t4; --echo # derived table that is optimized out CREATE TABLE t1 (i INT); EXPLAIN SELECT 1 FROM (SELECT 1 AS x FROM t1) tt WHERE x; EXPLAIN FORMAT= JSON SELECT 1 FROM (SELECT 1 AS x FROM t1) tt WHERE x; DROP TABLE t1; --echo # complex subqueries CREATE TABLE t1 (a INT, b INT); CREATE TABLE t2 (c INT, d INT); CREATE TABLE t3 (e INT); CREATE TABLE t4 (f INT, g INT); INSERT INTO t1 VALUES (1,10), (2,10); INSERT INTO t2 VALUES (2,10), (2,20); INSERT INTO t3 VALUES (10), (30); INSERT INTO t4 VALUES (2,10), (2,10); --let $query = SELECT * FROM t1 WHERE t1.a IN (SELECT c FROM t2 WHERE (SELECT e FROM t3) < SOME(SELECT e FROM t3 WHERE t1.b)); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query DROP TABLE t1, t2, t3, t4; --echo # semi-join materialization (if enabled) CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1), (1), (1), (1), (1), (1), (1), (1), (1), (1), (1), (1); CREATE TABLE t2 (a INT) SELECT * FROM t1; CREATE TABLE t3 (a INT) SELECT * FROM t1; CREATE TABLE t4 (a INT) SELECT * FROM t1; EXPLAIN FORMAT=JSON SELECT * FROM t1 WHERE t1.a IN (SELECT t2.a FROM t2 WHERE t2.a > 0) AND t1.a IN (SELECT t3.a FROM t3 WHERE t3.a IN (SELECT t4.a FROM t4 WHERE a > 0)); DROP TABLE t1, t2, t3, t4; --echo # the same subquery is associated with two different JOIN_TABs CREATE TABLE t1 ( i1 INTEGER NOT NULL, c1 VARCHAR(1) NOT NULL ) ENGINE=InnoDB; INSERT INTO t1 VALUES (2,'w'); CREATE TABLE t2 ( i1 INTEGER NOT NULL, c1 VARCHAR(1) NOT NULL, c2 VARCHAR(1) NOT NULL, KEY (c1, i1) ) ENGINE=InnoDB; INSERT INTO t2 VALUES (8,'d','d'); INSERT INTO t2 VALUES (4,'v','v'); CREATE TABLE t3 ( c1 VARCHAR(1) NOT NULL ) ENGINE=InnoDB; INSERT INTO t3 VALUES ('v'); EXPLAIN FORMAT=json SELECT i1 FROM t1 WHERE EXISTS (SELECT t2.c1 FROM (t2 INNER JOIN t3 ON (t3.c1 = t2.c1)) WHERE t2.c2 != t1.c1 AND t2.c2 = (SELECT MIN(t3.c1) FROM t3)); DROP TABLE t1, t2, t3; --echo # multiple materialization groups CREATE TABLE t1 (c_key INT, KEY c_key (c_key)); INSERT INTO t1 VALUES (1), (2), (3); CREATE TABLE t2 (c INT, c_key INT); INSERT INTO t2 VALUES (8,5),(4,5),(8,1); CREATE TABLE t3 LIKE t1; INSERT INTO t3 SELECT * FROM t1; CREATE TABLE t4 LIKE t2; INSERT INTO t4 SELECT * FROM t2; CREATE TABLE t5 (c INT); INSERT INTO t5 VALUES (1), (2), (3); --echo # This should show two materialization groups where applicable let $query=SELECT * FROM t5 WHERE c IN (SELECT t2.c FROM t1 JOIN t2 ON t2.c_key = t1.c_key) AND c IN (SELECT t4.c FROM t3 JOIN t4 ON t4.c_key = t3.c_key); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query DROP TABLE t1, t2, t3, t4, t5; CREATE TABLE t1 (i INT); CREATE TABLE t2 (i INT); CREATE TABLE t3 (i INT); INSERT INTO t1 VALUES (1); INSERT INTO t2 VALUES (1); INSERT INTO t3 VALUES (1); --echo # Subqueries in UPDATE values list let $query=UPDATE t1 SET i=(SELECT i FROM t2); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query let $query=UPDATE t1, t2 SET t1.i=(SELECT i FROM t3); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query --echo # INSERT ... ON DUPLICATE KEY UPDATE x=(SELECT ...) value list let $query=INSERT INTO t1 (i) SELECT i FROM t2 ON DUPLICATE KEY UPDATE i=(SELECT i FROM t2); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query let $query=INSERT INTO t1 VALUES (1) ON DUPLICATE KEY UPDATE i = (SELECT i FROM t2); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query --echo # Subqueries in INSERT VALUES tuples: let $query=INSERT INTO t3 VALUES((SELECT i FROM t1)), ((SELECT i FROM t2)); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query DROP TABLE t1, t2, t3; --echo # Various queries --source include/turn_off_only_full_group_by.inc let $query= SELECT a, b FROM (SELECT 1 AS a, 2 AS b UNION ALL SELECT 1 AS a, 2 AS b) t1 GROUP BY a ORDER BY b DESC; --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query --source include/restore_sql_mode_after_turn_off_only_full_group_by.inc --echo # CREATE TABLE t1(a INT, b INT); INSERT INTO t1 VALUES (), (); let $query=SELECT 1 FROM t1 GROUP BY GREATEST(t1.a, (SELECT 1 FROM (SELECT t1.b FROM t1, t1 t2 ORDER BY t1.a, t1.a LIMIT 1) AS d)); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query DROP TABLE t1; --echo # CREATE TABLE t1(f1 INT); INSERT INTO t1 VALUES (1),(1); let $query=SELECT 1 FROM t1 WHERE (SELECT (SELECT 1 FROM t1 GROUP BY f1)); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query DROP TABLE t1; --echo # CREATE TABLE t1 (i INT); CREATE TABLE t2 (i INT, j INT); INSERT INTO t1 VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10); INSERT INTO t2 SELECT i, i * 10 FROM t1; let $query=SELECT * FROM t1 ORDER BY (SELECT t2.j FROM t2 WHERE t2.i = t1.i); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query --source include/turn_off_only_full_group_by.inc let $query=SELECT * FROM t1 GROUP BY (SELECT t2.j FROM t2 WHERE t2.i = t1.i); --eval EXPLAIN $query --eval EXPLAIN FORMAT=JSON $query --source include/restore_sql_mode_after_turn_off_only_full_group_by.inc DROP TABLE t1, t2; CREATE TABLE t1 (a INT NOT NULL, b INT NOT NULL, KEY k1 (a, b)); INSERT INTO t1 VALUES (10,1),(10,2),(10,3),(20,4),(20,5),(20,6), (30,7),(30,8),(30,9),(40,10),(40,11),(40,12),(40,13), (40,14),(40,15),(40,16),(40,17),(40,18),(40,19),(40,20); EXPLAIN FORMAT=JSON SELECT a, MIN(b) AS b FROM t1 GROUP BY a ORDER BY b; DROP TABLE t1; --echo # CREATE TABLE t1 (a INT NOT NULL, b CHAR(3) NOT NULL, PRIMARY KEY (a)); INSERT INTO t1 VALUES (1,'ABC'), (2,'EFG'), (3,'HIJ'); CREATE TABLE t2 (a INT NOT NULL,b CHAR(3) NOT NULL,PRIMARY KEY (a, b)); INSERT INTO t2 VALUES (1,'a'),(1,'b'),(3,'F'); EXPLAIN FORMAT=JSON SELECT t1.a, GROUP_CONCAT(t2.b) AS b FROM t1 LEFT JOIN t2 ON t1.a=t2.a GROUP BY t1.a ORDER BY t1.b; DROP TABLE t1; DROP TABLE t2; --echo # CREATE TABLE t1 (a INT, b INT); INSERT INTO t1 VALUES (1,4), (2,2), (2,2), (4,1), (4,1), (4,1), (4,1), (2,1), (2,1); EXPLAIN FORMAT=JSON SELECT SUM(b) FROM t1 GROUP BY a WITH ROLLUP; DROP TABLE t1; --echo # Composition of DISTINCT, GROUP BY and ORDER BY CREATE TABLE t1 (a INT, b INT); INSERT INTO t1 VALUES (1, 1), (1, 2), (2, 1), (2, 2), (3, 1); let $query=SELECT DISTINCT SUM(b) s FROM t1 GROUP BY a ORDER BY s; --eval EXPLAIN FORMAT=JSON $query FLUSH STATUS; --eval $query --disable_warnings SHOW SESSION STATUS WHERE (Variable_name LIKE 'Sort_%' OR Variable_name LIKE 'Created_%_tables') AND Value > 0; --enable_warnings DROP TABLE t1; --echo # "buffer_result" node CREATE TABLE t1 (a INT NOT NULL); CREATE TABLE t2 (a INT NOT NULL, PRIMARY KEY (a)); INSERT INTO t1 VALUES (1); INSERT INTO t2 VALUES (1),(2); --source include/turn_off_only_full_group_by.inc EXPLAIN FORMAT=JSON SELECT SQL_BIG_RESULT DISTINCT t1.a FROM t1,t2 ORDER BY t2.a; --source include/restore_sql_mode_after_turn_off_only_full_group_by.inc DROP TABLE t1, t2; --echo # CREATE TABLE t1 (a INT NOT NULL, b INT, PRIMARY KEY (a)); CREATE TABLE t2 (a INT NOT NULL, PRIMARY KEY (a)); INSERT INTO t1 VALUES (1,10), (2,20), (3,30), (4,40); INSERT INTO t2 VALUES (2), (3), (4), (5); EXPLAIN FORMAT=JSON SELECT * FROM t2 WHERE t2.a IN (SELECT a FROM t1 WHERE t1.b <> 30); DROP TABLE t1, t2; set default_storage_engine= @save_storage_engine;
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