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https://dev.mysql.com/doc/refman/8.4/en/innodb-physical-structure.html
When new records are inserted into an InnoDB clustered index, InnoDB tries to leave 1/16 of the page free for future insertions and updates of the index records. An innodb_fill_factor setting of 100 leaves 1/16 of the space in clustered index pages ... With the exception of spatial indexes, InnoDB indexes are B-tree data ...
https://dev.mysql.com/doc/refman/8.4/en/json.html
(Bug #86866, Bug #26369555) MySQL discards extra whitespace between keys, values, or elements in the original JSON document, and leaves (or inserts, when necessary) a single space following each comma (,) or colon (:) when displaying it. The JSON ...
https://dev.mysql.com/doc/refman/8.4/en/keywords.html
Certain keywords, such as SELECT, DELETE, or BIGINT, are reserved and require special treatment for use as identifiers such as table and column names. This may also be true for the names of built-in functions. Some keywords which are otherwise ...
https://dev.mysql.com/doc/refman/8.4/en/loop.html
Example: CREATE PROCEDURE doiterate(p1 INT) BEGIN label1: LOOP SET p1 = p1 + 1; IF p1 < 10 THEN ITERATE label1; END IF; LEAVE label1; END LOOP label1; SET @x = p1; END; . [begin_label:] LOOP statement_list END LOOP [end_label] LOOP implements a ...
https://dev.mysql.com/doc/refman/8.4/en/pam-pluggable-authentication.html
Note The client-side mysql_clear_password authentication plugin leaves the password untouched, so client programs send it to the MySQL server as cleartext. Note The client-side mysql_clear_password authentication plugin leaves the password ... Note ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-filtering.html
Pre-filtering leaves more “room” in these tables for instances of rows for enabled instrument types. With post-filtering, nonfile events are collected, leaving fewer rows for file events. Events are processed in a producer/consumer fashion: ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-replication-asynchronous-connection-failover-managed-table.html
When you add a group member to the source list and define it as part of a managed group, the asynchronous connection failover mechanism updates the source list to keep it in line with membership changes, adding and removing group members ... This ...
https://dev.mysql.com/doc/refman/8.4/en/replication-asynchronous-connection-failover.html
When you add a group member to the source list and define it as part of a managed group, the asynchronous connection failover mechanism updates the source list to keep it in line with membership changes, adding and removing group members ... You can ...
https://dev.mysql.com/doc/refman/8.4/en/replication-howto-masterstatus.html
Choose one of the following options: If you have existing data that needs be to synchronized with the replica before you start replication, leave the client running so that the lock remains in place. To configure the replica to start the ...
https://dev.mysql.com/doc/refman/8.4/en/roles.html
Like user accounts, roles can have privileges granted to and revoked from them. A user account can be granted roles, which grants to the account the privileges associated with each role. This enables assignment of sets of privileges to accounts and ...