mirror of
https://github.com/MariaDB/server.git
synced 2025-07-20 10:24:14 +03:00
a7e352b54d
This was done in, among other things: - thd->db and thd->db_length - TABLE_LIST tablename, db, alias and schema_name - Audit plugin database name - lex->db - All db and table names in Alter_table_ctx - st_select_lex db Other things: - Changed a lot of functions to take const LEX_CSTRING* as argument for db, table_name and alias. See init_one_table() as an example. - Changed some function arguments from LEX_CSTRING to const LEX_CSTRING - Changed some lists from LEX_STRING to LEX_CSTRING - threads_mysql.result changed because process list_db wasn't always correctly updated - New append_identifier() function that takes LEX_CSTRING* as arguments - Added new element tmp_buff to Alter_table_ctx to separate temp name handling from temporary space - Ensure we store the length after my_casedn_str() of table/db names - Removed not used version of rename_table_in_stat_tables() - Changed Natural_join_column::table_name and db_name() to never return NULL (used for print) - thd->get_db() now returns db as a printable string (thd->db.str or "")
120 lines
3.7 KiB
Plaintext
120 lines
3.7 KiB
Plaintext
SET GLOBAL event_scheduler = OFF;
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SELECT name, type, processlist_user, processlist_host, processlist_db,
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processlist_command, processlist_info,
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IF(parent_thread_id IS NULL, parent_thread_id, 'unified parent_thread_id')
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AS unified_parent_thread_id,
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role, instrumented
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FROM performance_schema.threads
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WHERE name LIKE 'thread/sql%'
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ORDER BY name;
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name thread/sql/main
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type BACKGROUND
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processlist_user NULL
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processlist_host NULL
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processlist_db mysql
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processlist_command NULL
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processlist_info NULL
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unified_parent_thread_id NULL
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role NULL
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instrumented YES
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name thread/sql/one_connection
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type FOREGROUND
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processlist_user root
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processlist_host localhost
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processlist_db test
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processlist_command Query
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processlist_info SELECT name, type, processlist_user, processlist_host, processlist_db,
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processlist_command, processlist_info,
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IF(parent_thread_id IS NULL, parent_thread_id, 'unified parent_thread_id')
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AS unified_parent_thread_id,
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role, instrumented
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FROM performance_schema.threads
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WHERE name LIKE 'thread/sql%'
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ORDER BY name
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unified_parent_thread_id unified parent_thread_id
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role NULL
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instrumented YES
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name thread/sql/signal_handler
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type BACKGROUND
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processlist_user NULL
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processlist_host NULL
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processlist_db NULL
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processlist_command NULL
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processlist_info NULL
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unified_parent_thread_id unified parent_thread_id
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role NULL
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instrumented YES
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name thread/sql/slave_background
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type BACKGROUND
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processlist_user NULL
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processlist_host NULL
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processlist_db NULL
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processlist_command NULL
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processlist_info NULL
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unified_parent_thread_id unified parent_thread_id
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role NULL
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instrumented YES
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CREATE TEMPORARY TABLE t1 AS
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SELECT thread_id FROM performance_schema.threads
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WHERE name LIKE 'thread/sql%';
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SET GLOBAL event_scheduler = ON;
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SELECT name, type, processlist_user, processlist_host, processlist_db,
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processlist_command, processlist_info,
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IF(parent_thread_id IS NULL, parent_thread_id, 'unified parent_thread_id')
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AS unified_parent_thread_id,
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role, instrumented
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FROM performance_schema.threads
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WHERE name LIKE 'thread/sql%'
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AND thread_id NOT IN (SELECT thread_id FROM t1)
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ORDER BY name;
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name thread/sql/event_scheduler
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type FOREGROUND
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processlist_user root
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processlist_host localhost
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processlist_db NULL
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processlist_command Sleep
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processlist_info NULL
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unified_parent_thread_id unified parent_thread_id
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role NULL
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instrumented YES
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TRUNCATE t1;
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INSERT INTO t1
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SELECT thread_id FROM performance_schema.threads
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WHERE name LIKE 'thread/sql%';
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SELECT COUNT(*) INTO @aux FROM t1;
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DROP EVENT IF EXISTS t_ps_event;
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CREATE EVENT t_ps_event
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ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL 1 SECOND
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DO SELECT SLEEP(3);
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SELECT name, type, processlist_user, processlist_host, processlist_db,
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processlist_command, processlist_info,
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IF(parent_thread_id IS NULL, parent_thread_id, 'unified parent_thread_id')
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AS unified_parent_thread_id,
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role, instrumented
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FROM performance_schema.threads
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WHERE name LIKE 'thread/sql%'
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AND thread_id NOT IN (SELECT thread_id FROM t1)
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ORDER BY name;
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name thread/sql/event_worker
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type FOREGROUND
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processlist_user root
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processlist_host localhost
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processlist_db test
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processlist_command Sleep
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processlist_info SELECT SLEEP(3)
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unified_parent_thread_id unified parent_thread_id
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role NULL
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instrumented YES
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SELECT t2.name AS parent_thread_name, t1.name AS child_thread_name
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FROM performance_schema.threads t1 INNER JOIN performance_schema.threads t2
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ON t1.parent_thread_id = t2.thread_id
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WHERE t1.name LIKE 'thread/sql%'
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AND t1.parent_thread_id IS NOT NULL
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ORDER BY parent_thread_name, child_thread_name;
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parent_thread_name child_thread_name
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thread/sql/event_scheduler thread/sql/event_worker
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thread/sql/main thread/sql/one_connection
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thread/sql/main thread/sql/signal_handler
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thread/sql/main thread/sql/slave_background
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thread/sql/one_connection thread/sql/event_scheduler
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