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https://dev.mysql.com/doc/refman/8.4/en/mysqlshow.html
--enable-cleartext-plugin Command-Line Format --enable-cleartext-plugin Type Boolean Default Value FALSE Enable the mysql_clear_password cleartext authentication plugin. (See Section 8.4.1.4, “Client-Side Cleartext Pluggable Authentication”.) ...
https://dev.mysql.com/doc/refman/8.4/en/mysqlslap.html
--enable-cleartext-plugin Command-Line Format --enable-cleartext-plugin Type Boolean Default Value FALSE Enable the mysql_clear_password cleartext authentication plugin. (See Section 8.4.1.4, “Client-Side Cleartext Pluggable Authentication”.) ...
https://dev.mysql.com/doc/refman/8.4/en/nonpersistible-system-variables.html
SET PERSIST and SET PERSIST_ONLY enable global system variables to be persisted to the mysqld-auto.cnf option file in the data directory (see Section 15.7.6.1, “SET Syntax for Variable Assignment”). However, not all system variables can be ...
https://dev.mysql.com/doc/refman/8.4/en/null-values.html
For text file import or export operations performed with LOAD DATA or SELECT ... The NULL value means “no data.” NULL can be written in any lettercase. Be aware that the NULL value is different from values such as 0 for numeric types or the ...
https://dev.mysql.com/doc/refman/8.4/en/numeric-type-syntax.html
(There is also a limit on how long the text of DECIMAL literals can be; see Section 14.24.3, “Expression Handling”.) UNSIGNED, if specified, disallows negative values. For integer data types, M indicates the minimum display width. Display width ...
https://dev.mysql.com/doc/refman/8.4/en/optimize-blob.html
When storing a large blob containing textual data, consider compressing it first. Rather than testing for equality against a very long text string, you can store a hash of the column value in a separate column, index that column, and test the ...Do ...
https://dev.mysql.com/doc/refman/8.4/en/optimize-table.html
After doing substantial insert, update, or delete operations on columns that are part of a FULLTEXT index in an InnoDB table. After deleting a large part of a MyISAM or ARCHIVE table, or making many changes to a MyISAM or ARCHIVE table with ...
https://dev.mysql.com/doc/refman/8.4/en/optimizing-innodb-bulk-data-loading.html
For optimal performance when loading data into an InnoDB FULLTEXT index, follow this set of steps: Define a column FTS_DOC_ID at table creation time, of type BIGINT UNSIGNED NOT NULL, with a unique index named FTS_DOC_ID_INDEX. For example: CREATE ... These performance tips supplement the general guidelines for fast inserts in Section 10.2.5.1, “Optimizing INSERT ...
https://dev.mysql.com/doc/refman/8.4/en/optimizing-innodb-storage-layout.html
For tables that are big, or contain lots of repetitive text or numeric data, consider using COMPRESSED row format. Once your data reaches a stable size, or a growing table has increased by tens or some hundreds of megabytes, consider using the ...
https://dev.mysql.com/doc/refman/8.4/en/optimizing-queries-myisam.html
For MyISAM tables that change frequently, try to avoid all variable-length columns (VARCHAR, BLOB, and TEXT). Some general tips for speeding up queries on MyISAM tables: To help MySQL better optimize queries, use ANALYZE TABLE or run myisamchk ...