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https://dev.mysql.com/doc/refman/8.4/en/replication-multi-source.html
Multi-source replication in MySQL 8.4 enables a replica to receive transactions from multiple immediate sources in parallel. In a multi-source replication topology, a replica creates a replication channel for each source that it should receive ...
https://dev.mysql.com/doc/refman/8.4/en/replication-options-gtids.html
The MySQL Server system variables described in this section are used to monitor and control Global Transaction Identifiers (GTIDs). For additional information, see Section 19.1.3, “Replication with Global Transaction Identifiers”.
https://dev.mysql.com/doc/refman/8.4/en/replication-options-reference.html
The following two sections provide basic information about the MySQL command-line options and system variables applicable to replication and the binary log. Replication Options and Variables The command-line options and system variables in the ...
https://dev.mysql.com/doc/refman/8.4/en/replication-privilege-checks-gr.html
You can also use a PRIVILEGE_CHECKS_USER account to secure the two replication applier threads used by Group Replication. The group_replication_applier thread on each group member is used for applying group transactions, and the ...
https://dev.mysql.com/doc/refman/8.4/en/replication-problems.html
If you have followed the instructions but your replication setup is not working, the first thing to do is check the error log for messages. Many users have lost time by not doing this soon enough after encountering problems. If you cannot tell from ...
https://dev.mysql.com/doc/refman/8.4/en/replication-rules-channel-based-filters.html
This section explains how to work with replication filters when multiple replication channels exist, for example in a multi-source replication topology. Replication filters can be global or specific to a channel, enabling you to configure ...
https://dev.mysql.com/doc/refman/8.4/en/rewriter-query-rewrite-plugin-reference.html
Users communicate with the plugin by modifying the set of rules stored in this table. The plugin communicates information to users by setting the table's message column. Note The rules table is loaded into the plugin by the flush_rewrite_rules ...
https://dev.mysql.com/doc/refman/8.4/en/selecting-columns.html
If you do not want to see entire rows from your table, just name the columns in which you are interested, separated by commas.
https://dev.mysql.com/doc/refman/8.4/en/show-index.html
SHOW [EXTENDED] {INDEX | INDEXES | KEYS} {FROM | IN} tbl_name [{FROM | IN} db_name] [WHERE expr] SHOW INDEX returns table index information. This statement requires some privilege for any column in the table. row *************************** Table: ...
https://dev.mysql.com/doc/refman/8.4/en/spatial-function-argument-handling.html
Spatial values, or geometries, have the properties described in Section 13.4.2.2, “Geometry Class”. Specific functions or groups of functions may have additional or different argument-handling characteristics, as discussed in the sections where ...