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https://dev.mysql.com/doc/refman/5.7/en/docker-mysql-more-topics.html
The MySQL Server's error log is then redirected to stderr, so that the error log goes into the Docker container's log and is viewable using the docker logs mysqld-container command. To make MySQL Server generate an error log when either of the two ...A MySQL Docker installation is different from a common, non-Docker installation in the following aspects: Included binaries are limited to: /usr/bin/my_print_defaults /usr/bin/mysql /usr/bin/mysql_config /usr/bin/mysql_install_db /usr/bin/mysql_tzinfo_to_sql /usr/bin/mysql_upgrade /usr/bin/mysqladmin /usr/bin/mysqlcheck /usr/bin/mysqldump /usr/bin/mysqlpump /usr/sbin/mysqld All binaries are stripped; they contain no debug ...
https://dev.mysql.com/doc/refman/5.7/en/identifier-qualifiers.html
An unqualified name is permitted in contexts where interpretation of the name is unambiguous. A qualified name includes at least one qualifier to clarify the interpretive context by overriding a default context or providing missing context. For ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-locking-reads.html
Here, LOCK IN SHARE MODE is not a good solution because if two users read the counter at the same time, at least one of them ends up in deadlock when it attempts to update the counter. If you query data and then insert or update related data within ...
https://dev.mysql.com/doc/refman/5.7/en/replication-administration-status.html
When the replication SQL thread has caught up on I/O, Seconds_Behind_Master displays 0; but when the replication I/O thread is still queuing up a new event, Seconds_Behind_Master may show a large value until the SQL thread finishes executing the new ... The most common task when managing a replication process is to ensure that replication is taking place and that there have been no errors between the replica and the ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-tp-thread-group-stats-table.html
This number is incremented when a statement starts executing, not when it finishes. QUERIES_QUEUED The number of statements received that were queued for execution. This does not count statements that the thread group was able to begin executing ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-consumer-filtering.html
If you disable a consumer, the server does not spend time maintaining destinations for that consumer. To enable or disable a consumer, set its ENABLED value to YES or NO. For example, if you do not care about historical event information, disable ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-events-transactions-current-table.html
For discussion of picoseconds as the unit for event times and factors that affect time values, see Section 25.4.1, “Performance Schema Event Timing”. For example, the events_transactions_history and events_transactions_history_long tables are ...
https://dev.mysql.com/doc/refman/5.7/en/internal-temporary-tables.html
Note When using internal_tmp_disk_storage_engine=INNODB, queries that generate on-disk internal temporary tables that exceed InnoDB row or column limits return Row size too large or Too many columns errors. Presence of any string column with a ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-redo-log-reader.html
Reads a redo log file, checking it for errors, printing its contents in a human-readable format, or both. Command-Line Format -mbyte # Type Numeric Default Value 0 Minimum Value 0 Maximum Value 15 -mbyte #: Starting megabyte. Command-Line Format ...
https://dev.mysql.com/doc/refman/5.7/en/union.html
FROM t2) ORDER BY sort_col; To additionally maintain sort order within individual SELECT results, add a secondary column to the ORDER BY clause: (SELECT 1 AS sort_col, col1a, col1b, ... UNION queries with an aggregate function in an ORDER BY clause ...[UNION [ALL | DISTINCT] SELECT ...] UNION combines the result from multiple SELECT statements into a single result ...