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https://dev.mysql.com/doc/refman/5.7/en/partitioning.html
See Section 24.3.16, “The INFORMATION_SCHEMA PARTITIONS Table”, for more information; for some examples of queries against this table, see Section 22.2.7, “How MySQL Partitioning Handles NULL”. Note As of MySQL 5.7.17, the generic ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-instrumentation-checking.html
It is always possible to determine what instruments the Performance Schema includes by checking the setup_instruments table. Changes to this code occur often, which also affects the set of instruments. It is not practical to list all the ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-replication-tables.html
By contrast, using the Performance Schema tables, information about replica status can be searched using general SELECT queries, including complex WHERE conditions, joins, and so forth. This is similar to the information available from the SHOW ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-restrictions.html
Results for queries that refer to tables in the performance_schema database are not saved in the query cache. The Performance Schema avoids using mutexes to collect or produce data, so there are no guarantees of consistency and results can ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-threads-table.html
The threads table contains a row for each server thread. Each row contains information about a thread and indicates whether monitoring and historical event logging are enabled for it: mysql> SELECT * FROM performance_schema.threads\G ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema.html
These tables can be queried using SELECT statements like other tables. The MySQL Performance Schema is a feature for monitoring MySQL Server execution at a low level. The Performance Schema has these characteristics: The Performance Schema provides ...
https://dev.mysql.com/doc/refman/5.7/en/point-in-time-recovery-positions.html
The last section, Section 7.5.1, “Point-in-Time Recovery Using Binary Log”, explains the general idea of using the binary log to perform a point-in-time-recovery. As an example, suppose that around 13:00:00 on May 27, 2020, an SQL statement was ...
https://dev.mysql.com/doc/refman/5.7/en/populating-spatial-columns.html
After you have created spatial columns, you can populate them with spatial data. Values should be stored in internal geometry format, but you can convert them to that format from either Well-Known Text (WKT) or Well-Known Binary (WKB) format. For ...
https://dev.mysql.com/doc/refman/5.7/en/precision-math-rounding.html
This section discusses precision math rounding for the ROUND() function and for inserts into columns with exact-value types (DECIMAL and integer). The ROUND() function rounds differently depending on whether its argument is exact or approximate: ...
https://dev.mysql.com/doc/refman/5.7/en/privilege-checking.html
In complex scenarios where the query uses SQL SECURITY DEFINER views or stored routines, it may be that a user is denied from seeing the trace of its query because it lacks some extra privileges on those objects. In that case, the trace will be ...