PDF (US Ltr)
- 43.2Mb
PDF (A4)
- 43.3Mb
Man Pages (TGZ)
- 295.2Kb
Man Pages (Zip)
- 400.4Kb
Info (Gzip)
- 4.3Mb
Info (Zip)
- 4.3Mb
Search Results
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-tc-time-track-stats.html
The tc_time_track_stats table provides time-tracking information obtained from the DBTC block (TC) instances in the data nodes, through API nodes access NDB. index_key_ops Based on duration of successful unique index key operations, tracked against ...Each TC instance tracks latencies for a set of activities it undertakes on behalf of API nodes or other data nodes; these activities include transactions, transaction errors, key reads, key writes, unique index operations, failed key operations of any type, scans, failed scans, fragment scans, and failed fragment ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-threadblocks.html
The threadblocks table associates data nodes, threads, and instances of NDB kernel blocks. The threadblocks table contains the following columns: node_id Node ID thr_no Thread ID block_name Block name block_instance Block instance number Notes The ...Although the list of possible values is static for a given NDB Cluster release, the list may vary between ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-blackhole.html
When performing binary logging, all inserts to such tables are always logged, regardless of the logging format in use. With the statement based logging format, all statements affecting BLACKHOLE tables are logged, but their effects ignored. When ...
https://dev.mysql.com/doc/refman/8.0/en/sys-extract-table-from-file-name.html
Given a file path name, returns the path component that represents the table name. It provides a convenient way to display table names, which can be more easily understood than full path names, and can be used in joins against object table names.
https://dev.mysql.com/doc/refman/8.0/en/sys-ps-truncate-all-tables.html
Truncates all Performance Schema summary tables, resetting all aggregated instrumentation as a snapshot. Parameters in_verbose BOOLEAN: Whether to display each TRUNCATE TABLE statement before executing it. Example mysql> CALL ...
https://dev.mysql.com/doc/refman/8.0/en/multiple-key-caches.html
By default, table indexes are assigned to the main (default) key cache created at the server startup. This feature enables you to assign different table indexes to different key caches. Where there are multiple key caches, the server must know which ... Note As of MySQL 8.0, the compound-part structured-variable syntax discussed here for referring to multiple MyISAM key caches is ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-subpartitions.html
Consider the following CREATE TABLE statement: CREATE TABLE ts (id INT, purchased DATE) PARTITION BY RANGE( YEAR(purchased) ) SUBPARTITION BY HASH( TO_DAYS(purchased) ) SUBPARTITIONS 2 ( PARTITION p0 VALUES LESS THAN (1990), PARTITION p1 VALUES LESS ... Subpartitioning—also known as composite partitioning—is the further division of each partition in a partitioned ...
https://dev.mysql.com/doc/refman/8.0/en/events-privileges.html
This user then creates the following event: CREATE EVENT e_insert ON SCHEDULE EVERY 7 SECOND DO INSERT INTO myschema.mytable; After this event has been created, root revokes the EVENT privilege for jon@ghidora. The EVENT privilege governs the ... To ...
https://dev.mysql.com/doc/refman/8.0/en/except.html
As with UNION and INTERSECT, either query block can make use of any of SELECT, TABLE, or VALUES. query_expression_body EXCEPT [ALL | DISTINCT] query_expression_body [EXCEPT [ALL | DISTINCT] query_expression_body] [...] query_expression_body: See ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-consumer-filtering.html
For example, if you do not care about historical event information, disable the history consumers: UPDATE performance_schema.setup_consumers SET ENABLED = 'NO' WHERE NAME LIKE '%history%'; The consumer settings in the setup_consumers table form a ...