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https://dev.mysql.com/doc/refman/8.0/en/adding-collation.html
The value that it returns to indicate weights is a binary string, so it is convenient to use HEX(WEIGHT_STRING(str)) to display the weights in printable form. Warning User-defined collations are deprecated; you should expect support for them to be ...
https://dev.mysql.com/doc/refman/8.0/en/ansi-diff-update.html
If you access a column from the table to be updated in an expression, UPDATE uses the current value of the column. The second assignment in the following statement sets col2 to the current (updated) col1 value, not the original col1 value. The ...
https://dev.mysql.com/doc/refman/8.0/en/arithmetic-functions.html
Table 14.9 Arithmetic Operators Name Description %, MOD Modulo operator * Multiplication operator + Addition operator - Minus operator - Change the sign of the argument / Division operator DIV Integer division The usual arithmetic operators are ...
https://dev.mysql.com/doc/refman/8.0/en/assignment-operators.html
Table 14.6 Assignment Operators Name Description := Assign a value = Assign a value (as part of a SET statement, or as part of the SET clause in an UPDATE statement) := Assignment operator. Causes the user variable on the left hand side of the ...
https://dev.mysql.com/doc/refman/8.0/en/audit-log-elements.html
MySQL Enterprise Audit is based on the audit log plugin and related elements: A server-side plugin named audit_log examines auditable events and determines whether to write them to the audit log. Tables in the mysql system database provide ...A set ...
https://dev.mysql.com/doc/refman/8.0/en/binary-log-formats.html
In row-based logging (the default), the source writes events to the binary log that indicate how individual table rows are affected. The server uses several logging formats to record information in the binary log: Replication capabilities in MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/binlog-replication-configuration-overview.html
If required, you can configure the replica to process only events that apply to particular databases or tables. This section describes replication between MySQL servers based on the binary log file position method, where the MySQL instance ...
https://dev.mysql.com/doc/refman/8.0/en/bit-type.html
The maximum combined size of all BIT columns used in a given NDB table must not exceed 4096 bits. The BIT data type is used to store bit values. If you assign a value to a BIT(M) column that is less than M bits long, the value is padded on the left ...
https://dev.mysql.com/doc/refman/8.0/en/channels-naming-conventions.html
Because channel names are used in the replica's applier metadata repository table, the character set used for these is always UTF-8. This section describes how naming conventions are impacted by replication channels. Each replication channel has a ...
https://dev.mysql.com/doc/refman/8.0/en/channels-startup-options.html
In MySQL 8.0, the FILE setting is deprecated, and TABLE is the default, so the system variables can be omitted. This section describes startup options which are impacted by the addition of replication channels. The master_info_repository and ...