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https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-datafiles-table.html
If a file-per-table tablespace is created in a location outside the MySQL data directory, the path value is a fully qualified directory path. The INNODB_DATAFILES table provides data file path information for InnoDB file-per-table and general ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-tp-thread-state-table.html
For example, if an application uses this query: SELECT * FROM INFORMATION_SCHEMA.TP_THREAD_STATE; The application should use this query instead: SELECT * FROM performance_schema.tp_thread_state; The TP_THREAD_STATE table has one row per thread ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-drop-table.html
Usage ndb_drop_table -c connection_string tbl_name -d db_name Options that can be used with ndb_drop_table are shown in the following table. --database, -d Command-Line Format --database=name Type String Default Value TEST_DB Name of the database in ...--connect-retries Command-Line Format --connect-retries=# Type Integer Default Value 12 Minimum Value 0 Maximum Value 12 Number of times to retry connection before giving ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-mutex-instances-table.html
When some code creates a mutex, a row is added to the mutex_instances table. The mutex_instances table lists all the mutexes seen by the Performance Schema while the server executes. The mutex_instances table has these columns: NAME The instrument ...A mutex is a synchronization mechanism used in the code to enforce that only one thread at a given time can have access to some common ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-tp-thread-group-state-table.html
Note The Performance Schema table described here is available as of MySQL 8.0.14. Prior to MySQL 8.0.14, use the corresponding INFORMATION_SCHEMA table instead; see Section 28.5.2, “The INFORMATION_SCHEMA TP_THREAD_GROUP_STATE Table”. The ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-tp-thread-group-stats-table.html
Note The Performance Schema table described here is available as of MySQL 8.0.14. Prior to MySQL 8.0.14, use the corresponding INFORMATION_SCHEMA table instead; see Section 28.5.3, “The INFORMATION_SCHEMA TP_THREAD_GROUP_STATS Table”. The ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-issues.html
Note Every NDB table is implicitly partitioned by key when it is created. In the event of a node failure, errors in replication of NDB tables without primary keys can still occur, due to the possibility of duplicate rows being inserted in such cases. For this reason, it is highly recommended that all NDB tables being replicated have explicit primary ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-routines-table.html
The ROUTINES table provides information about stored routines (stored procedures and stored functions). The ROUTINES table does not include built-in (native) functions or loadable functions. The ROUTINES table has these columns: SPECIFIC_NAME The ...ROUTINE_CATALOG The name of the catalog to which the routine ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-views-table.html
This column has most of what you see in the Create Table column that SHOW CREATE VIEW produces. IS_UPDATABLE MySQL sets a flag, called the view updatability flag, at CREATE VIEW time. (Even if a view is updatable, it might not be possible to insert ...You must have the SHOW VIEW privilege to access this ...VIEW_DEFINITION The ...
https://dev.mysql.com/doc/refman/8.0/en/identifier-qualifiers.html
For example, this statement creates a table using the unqualified name t1: CREATE TABLE t1 (i INT); Because t1 includes no qualifier to specify a database, the statement creates the table in the default database. This statement creates a table using ...ON mydb.mytable ...; A column name may be given multiple qualifiers to indicate context in statements that reference it, as shown in the following ...