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https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-temp-table-info-table.html
The INNODB_TEMP_TABLE_INFO table provides information about user-created InnoDB temporary tables that are active in an InnoDB instance. The INNODB_TEMP_TABLE_INFO table is created when first queried, exists only in memory, and is not persisted to ...It does not provide information about internal InnoDB temporary tables used by the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-information-schema-temp-table-info.html
INNODB_TEMP_TABLE_INFO provides information about user-created InnoDB temporary tables that are active in the InnoDB instance. Create a simple InnoDB temporary table: mysql> CREATE TEMPORARY TABLE t1 (c1 INT PRIMARY KEY) ENGINE=INNODB; Query ...It ...
https://dev.mysql.com/doc/refman/8.0/en/myisam-repair.html
In this case, you must use ALTER TABLE to increase the MAX_ROWS and AVG_ROW_LENGTH table option values: ALTER TABLE tbl_name MAX_ROWS=xxx AVG_ROW_LENGTH=yyy; If you do not know the current table option values, use SHOW CREATE TABLE. Use the table ...
https://dev.mysql.com/doc/refman/8.0/en/update.html
For information about generated columns, see Section 15.1.20.8, “CREATE TABLE and Generated Columns”. UPDATE is a DML statement that modifies rows in a table. An UPDATE statement can start with a WITH clause to define common table expressions ...The SET clause indicates which columns to modify and the values they should be ...
https://dev.mysql.com/doc/refman/8.0/en/replication-gtids-concepts.html
A global transaction identifier (GTID) is a unique identifier created and associated with each transaction committed on the server of origin (the source). The MySQL system table mysql.gtid_executed is used to preserve the assigned GTIDs of all the ...This identifier is unique not only to the server on which it originated, but is unique across all servers in a given replication ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-page-compression.html
Page compression is enabled by specifying the COMPRESSION attribute with CREATE TABLE or ALTER TABLE. Enabling Page Compression To enable page compression, specify the COMPRESSION attribute in the CREATE TABLE statement. For example: CREATE TABLE t1 ... InnoDB supports page-level compression for tables that reside in file-per-table ...
https://dev.mysql.com/doc/refman/8.0/en/audit-log-filter-definitions.html
The preceding definition can be written like this: { "filter": { "class": [ { "name": [ "connection", "general", "table_access" ] } ] } } Logging Specific Event Subclasses To select specific event subclasses, use an event item containing a name item ...For information about using JSON data in MySQL, see Section 13.5, “The JSON Data ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-locks-set.html
If you have no indexes suitable for your statement and MySQL must scan the entire table to process the statement, every row of the table becomes locked, which in turn blocks all inserts by other users to the table. It is important to create good ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-handling-nulls.html
We can verify this behavior by examining the effects on the file system of creating a table partitioned by HASH and populating it with a record containing appropriate values. If you insert a row into a table partitioned by RANGE such that the column ... Partitioning in MySQL does nothing to disallow NULL as the value of a partitioning expression, whether it is a column value or the value of a user-supplied ...
https://dev.mysql.com/doc/refman/8.0/en/implicit-commit.html
CREATE TABLE and DROP TABLE statements do not commit a transaction if the TEMPORARY keyword is used. (This does not apply to other operations on temporary tables such as ALTER TABLE and CREATE INDEX, which do cause a commit.) However, although no ...