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https://dev.mysql.com/doc/refman/5.7/en/char.html
If strict SQL mode is not enabled and you assign a value to a CHAR or VARCHAR column that exceeds the column's maximum length, the value is truncated to fit and a warning is generated. For VARCHAR columns, trailing spaces in excess of the column ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-files-table.html
The FILES table has these columns: FILE_ID For InnoDB: The tablespace ID, also referred to as the space_id or fil_space_t::id. For NDB: For a Disk Data undo log file, the auto-generated ID number of the log file group to which the log file belongs.
https://dev.mysql.com/doc/refman/5.7/en/myisamchk-table-info.html
Auto increment key, Last value The key number associated the table's AUTO_INCREMENT column, and the most recently generated value for this column. “Record” and “row” are synonymous, as are “field” and “column.” The initial part of ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-socket-summary-tables.html
These socket summary tables aggregate timer and byte count information for socket operations: socket_summary_by_event_name: Aggregate timer and byte count statistics generated by the wait/io/socket/* instruments for all socket I/O operations, per ...When a connection terminates, the row in socket_summary_by_instance corresponding to it is ...
https://dev.mysql.com/doc/refman/5.7/en/replication-sbr-rbr.html
This is because the BLOB column value is logged, rather than the statement generating the data. SELECT, a CREATE statement is generated from the table definition and replicated using statement-based format, while the row insertions are replicated ...
https://dev.mysql.com/doc/refman/5.7/en/xa-statements.html
xid values are supplied by the client, or generated by the MySQL server. Values generated by one TM must be different from values generated by other TMs. To perform XA transactions in MySQL, use the following statements: XA {START|BEGIN} xid ...
https://dev.mysql.com/doc/refman/5.7/en/create-trigger.html
Triggers cannot use NEW.col_name or use OLD.col_name to refer to generated columns. For information about generated columns, see Section 13.1.18.7, “CREATE TABLE and Generated Columns”. Basic column value checks occur prior to trigger ... CREATE ...
https://dev.mysql.com/doc/refman/5.7/en/collation-diagnostics.html
The MySQL server generates diagnostics when it finds problems while parsing the Index.xml file: Unknown tags are written to the error log. For example, the following message results if a collation definition contains a <aaa> tag: [Warning] Buffered ...In other cases, when a collation description is generally correct but contains some unknown tags, the collation is initialized and is available for ...
https://dev.mysql.com/doc/refman/5.7/en/docker-mysql-more-topics.html
To make MySQL Server generate an error log when either of the two conditions is true, use the --log-error option to configure the server to generate the error log at a specific location inside the container. MYSQL_RANDOM_ROOT_PASSWORD: When this ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndbd.html
ndbd generates a set of log files which are placed in the directory specified by DataDir in the config.ini configuration file. For example, ndb_2_error.log is the error log generated by the data node whose node ID is 2. The ndbd binary provides the ...