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https://dev.mysql.com/doc/refman/8.0/en/replace.html
For another MySQL extension to standard SQL—that either inserts or updates—see Section 15.2.7.2, “INSERT ... When modifying an existing table that is not partitioned to accommodate partitioning, or, when modifying the partitioning of an ...The ... REPLACE [LOW_PRIORITY | DELAYED] [INTO] tbl_name [PARTITION (partition_name [, partition_name] ...)] [(col_name [, col_name] ...)] { {VALUES | VALUE} (value_list) [, (value_list)] ...
https://dev.mysql.com/doc/refman/8.0/en/revoke.html
[IGNORE UNKNOWN USER] user_or_role: { user (see Section 8.2.4, “Specifying Account Names”) | role (see Section 8.2.5, “Specifying Role Names” } The REVOKE statement enables system administrators to revoke privileges and roles, which can be ...[IGNORE UNKNOWN USER] REVOKE [IF EXISTS] ALL [PRIVILEGES], GRANT OPTION FROM user_or_role [, user_or_role] ...
https://dev.mysql.com/doc/refman/8.0/en/xa-restrictions.html
The events_transactions_current table displays the current status of the most recent monitored transaction event on the thread, and does not update this status when the thread is idle. For “external XA,” a MySQL server acts as a Resource Manager ... XA transaction support is limited to the InnoDB storage ...
https://dev.mysql.com/doc/refman/8.0/en/automatic-start.html
systemd, the mysqld_safe and mysql.server scripts, Solaris SMF, and the macOS Startup Item (or MySQL Preference Pane) can be used to start the server manually, or automatically at system startup time. To be current, you should update your option ...
https://dev.mysql.com/doc/refman/8.0/en/replication-binlog-encryption.html
From MySQL 8.0.14, binary log files and relay log files can be encrypted, helping to protect these files and the potentially sensitive data contained in them from being misused by outside attackers, and also from unauthorized viewing by users of ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-blob-tool.html
It is sometimes useful in diagnosing and repairing corrupted or damaged NDB tables containing BLOB or TEXT columns. --connect-retries Command-Line Format --connect-retries=# Type Integer Default Value 12 Minimum Value 0 Maximum Value 12 Number of ...
https://dev.mysql.com/doc/refman/8.0/en/char.html
The CHAR and VARCHAR types are similar, but differ in the way they are stored and retrieved. They also differ in maximum length and in whether trailing spaces are retained. The CHAR and VARCHAR types are declared with a length that indicates the ...
https://dev.mysql.com/doc/refman/8.0/en/charset-unicode-conversion.html
This section describes issues that you may face when converting character data between the utf8mb3 and utf8mb4 character sets. Note This discussion focuses primarily on converting between utf8mb3 and utf8mb4, but similar principles apply to ...One ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-compression-syntax-warnings.html
This section describes syntax warnings and errors that you may encounter when using the table compression feature with file-per-table tablespaces and general tablespaces. SQL Compression Syntax Warnings and Errors for File-Per-Table Tablespaces ...
https://dev.mysql.com/doc/refman/8.0/en/derived-table-optimization.html
Thus, if an ER_UPDATE_TABLE_USED error occurs for a view reference that uses an expression equivalent to the subquery, adding ALGORITHM=TEMPTABLE to the view definition prevents merging and takes precedence over the derived_merge value. This is true ...The optimizer handles derived tables, view references, and common table expressions the same way: It avoids unnecessary materialization whenever possible, which enables pushing down conditions from the outer query to derived tables and produces more efficient execution ...