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https://dev.mysql.com/doc/refman/8.4/en/data-size.html
(InnoDB compressed tables are readable and writable, while MyISAM compressed tables are read-only.) For MyISAM tables, if you do not have any variable-length columns (VARCHAR, TEXT, or BLOB columns), a fixed-size row format is used. Design your ...
https://dev.mysql.com/doc/refman/8.4/en/data-type-defaults.html
Data type specifications can have explicit or implicit default values. A DEFAULT value clause in a data type specification explicitly indicates a default value for a column. Examples: CREATE TABLE t1 ( i INT DEFAULT -1, c VARCHAR(10) DEFAULT '', ...
https://dev.mysql.com/doc/refman/8.4/en/ddl-rewriter.html
ddl_rewriter examines SQL statements received by the server prior to parsing, rewriting them according to these conditions: ddl_rewriter considers only CREATE TABLE statements, and only if they are standalone statements that occur at the beginning ... MySQL 8.4 includes a ddl_rewriter plugin that modifies CREATE TABLE statements received by the server before it parses and executes ...
https://dev.mysql.com/doc/refman/8.4/en/displaying-traces.html
Examining a trace in the mysql command-line client can be made less difficult using the pager less command (or your operating platform's equivalent). INTO DUMPFILE is preferable to INTO OUTFILE for this purpose, since the latter escapes newlines.
https://dev.mysql.com/doc/refman/8.4/en/docker-mysql-getting-started.html
Use the dropdowns for additional filters to select Description—contains, and enter “Docker” in the text field. Warning The MySQL Docker images maintained by the MySQL team are built specifically for Linux platforms. Other platforms are not ...
https://dev.mysql.com/doc/refman/8.4/en/dynamic-format.html
Dynamic storage format is used if a MyISAM table contains any variable-length columns (VARCHAR, VARBINARY, BLOB, or TEXT), or if the table was created with the ROW_FORMAT=DYNAMIC table option. Dynamic format is a little more complex than static ...
https://dev.mysql.com/doc/refman/8.4/en/engine-condition-pushdown-optimization.html
Columns used in comparisons cannot be of any of the BLOB or TEXT types. This optimization improves the efficiency of direct comparisons between a nonindexed column and a constant. In such cases, the condition is “pushed down” to the storage ...
https://dev.mysql.com/doc/refman/8.4/en/error-log-format.html
Log parsers can treat these fields as parts of the message text that is present only for logs written by servers recent enough to include them. Each error log sink (writer) component has a characteristic output format it uses to write messages to ...
https://dev.mysql.com/doc/refman/8.4/en/explain-for-connection.html
Because of changes to data (and supporting statistics) it may produce a different result from running EXPLAIN on the equivalent query text. To obtain the execution plan for an explainable statement executing in a named connection, use this ...
https://dev.mysql.com/doc/refman/8.4/en/expressions.html
This section lists the grammar rules that expressions must follow in MySQL and provides additional information about the types of terms that may appear in expressions. Expression Syntax Expression Term Notes Temporal Intervals Expression Syntax The ...