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https://dev.mysql.com/doc/refman/8.0/en/innodb-undo-tablespaces.html
A minimum of three undo tablespaces satisfies this requirement while permitting an undo tablespace to be taken offline manually. In this case, if the file extension size is larger than 16MB, and the previous file extension occurred within the last ... Undo tablespaces contain undo logs, which are collections of records containing information about how to undo the latest change by a transaction to a clustered index ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-installer-workflow.html
If you select this option, you are responsible for securing the Data folder and its related files manually after the server configuration finishes. This does not apply to files and directories for specific products, such as the MySQL server data ...
https://dev.mysql.com/doc/refman/8.0/en/replication-options-binary-log.html
Startup Options Used with Binary Logging System Variables Used with Binary Logging You can use the mysqld options and system variables that are described in this section to affect the operation of the binary log as well as to control which ...For ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-replication.html
In this case, an error message is issued, and you must set the channel up manually. This data permits initiating replication at a consistent position in the replication stream. When you issue START GROUP_REPLICATION on the joining member, the ...In ...
https://dev.mysql.com/doc/refman/8.0/en/audit-log-filter-definitions.html
Filter definitions have this form, where actions indicates how filtering takes place: { "filter": actions } The following discussion describes permitted constructs in filter definitions. The preceding definition can be written like this: { "filter": ...For information about using JSON data in MySQL, see Section 13.5, “The JSON Data ...
https://dev.mysql.com/doc/refman/8.0/en/comparison-operators.html
The following relational comparison operators can be used to compare not only scalar operands, but row operands: = > < >= <= <> != The descriptions for those operators later in this section detail how they work with row operands. Some of the ...
https://dev.mysql.com/doc/refman/8.0/en/general-thread-states.html
After create This occurs when the thread creates a table (including internal temporary tables), at the end of the function that creates the table. This state is used even if the table could not be created due to some error. This state occurs after ... 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-optimization.html
The most general way to satisfy a GROUP BY clause is to scan the whole table and create a new temporary table where all rows from each group are consecutive, and then use this temporary table to discover groups and apply aggregate functions (if ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-ft-index-cache-table.html
FIRST_DOC_ID The first document ID in which this word appears in the FULLTEXT index. LAST_DOC_ID The last document ID in which this word appears in the FULLTEXT index. DOC_COUNT The number of rows in which this word appears in the FULLTEXT index.
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-ft-index-table-table.html
The INNODB_FT_INDEX_TABLE table provides information about the inverted index used to process text searches against the FULLTEXT index of an InnoDB table. FIRST_DOC_ID The first document ID in which this word appears in the FULLTEXT index. Before ...