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https://dev.mysql.com/doc/refman/8.0/en/error-log-format.html
Log parsers can treat these fields as parts of the message text that is present only for logs written by servers recent enough to include them. Each error log sink (writer) component has a characteristic output format it uses to write messages to ...
https://dev.mysql.com/doc/refman/8.0/en/explain-for-connection.html
Because of changes to data (and supporting statistics) it may produce a different result from running EXPLAIN on the equivalent query text. To obtain the execution plan for an explainable statement executing in a named connection, use this ...
https://dev.mysql.com/doc/refman/8.0/en/expressions.html
This section lists the grammar rules that expressions must follow in MySQL and provides additional information about the types of terms that may appear in expressions. Expression Syntax Expression Term Notes Temporal Intervals Expression Syntax The ...
https://dev.mysql.com/doc/refman/8.0/en/extensions-to-ansi.html
Data types The MEDIUMINT, SET, and ENUM data types, and the various BLOB and TEXT data types. MySQL Server supports some extensions that you are not likely to find in other SQL DBMSs. Be warned that if you use them, your code is most likely not ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-mysql-cluster.html
Is it possible to use FULLTEXT indexes with NDB Cluster? A.10.23. Is it possible to use FULLTEXT indexes with NDB Cluster? FULLTEXT indexing is currently supported only by the InnoDB and MyISAM storage engines. In the following section, we answer ...
https://dev.mysql.com/doc/refman/8.0/en/federated-usagenotes.html
For example, creating a FEDERATED table fails if the table uses an index prefix on any VARCHAR, TEXT or BLOB columns. The following items indicate features that the FEDERATED storage engine does and does not support: The remote server must be a ...
https://dev.mysql.com/doc/refman/8.0/en/general-thread-states.html
FULLTEXT initialization The server is preparing to perform a natural-language full-text search. The following list describes thread State values that are associated with general query processing and not more specialized activities such as ...
https://dev.mysql.com/doc/refman/8.0/en/group-by-modifiers.html
The GROUP BY clause permits a WITH ROLLUP modifier that causes summary output to include extra rows that represent higher-level (that is, super-aggregate) summary operations. ROLLUP thus enables you to answer questions at multiple levels of ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-frequently-asked-questions.html
User credentials set using CHANGE REPLICATION SOURCE TO | CHANGE MASTER TO are stored in plain text in the replication metadata repositories on the server, but user credentials specified on START GROUP_REPLICATION are saved in memory only, and are ...What is the maximum number of MySQL servers in a group? A group can consist of maximum 9 ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-secure-user.html
User credentials set using CHANGE REPLICATION SOURCE TO | CHANGE MASTER TO are stored in plain text in the replication metadata repositories on the server, but user credentials specified on START GROUP_REPLICATION are saved in memory only, and are ... State transfer from the binary log requires a replication user with the correct permissions so that Group Replication can establish direct member-to-member replication ...