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https://dev.mysql.com/doc/refman/5.7/en/thread-pool-information-schema-tables.html
The following sections describe the INFORMATION_SCHEMA tables associated with the thread pool plugin (see Section 5.5.3, “MySQL Enterprise Thread Pool”). They provide information about thread pool operation: TP_THREAD_GROUP_STATE: Information ...In the case of TP_THREAD_STATE, all rows for a thread group comprise a snapshot in ...
https://dev.mysql.com/doc/refman/5.7/en/charset-conversion.html
To convert a binary or nonbinary string column to use a particular character set, use ALTER TABLE. The following statement accomplishes this: ALTER TABLE t MODIFY col1 CHAR(50) CHARACTER SET utf8; Conversion may be lossy if the column contains ...
https://dev.mysql.com/doc/refman/5.7/en/replication-options-gtids.html
Only statements that can be logged using GTID safe statements can be logged when enforce_gtid_consistency is set to ON, so the operations listed here cannot be used with this option: CREATE TABLE ... SELECT statements CREATE TEMPORARY TABLE or DROP ... The MySQL Server system variables described in this section are used to monitor and control Global Transaction Identifiers ...
https://dev.mysql.com/doc/refman/5.7/en/getting-information.html
What if you forget the name of a database or table, or what the structure of a given table is (for example, what its columns are called)? MySQL addresses this problem through several statements that provide information about the databases and ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-best-practices.html
Specify a primary key for every table using the most frequently queried column or columns, or an auto-increment value if there is no obvious primary key. Use joins wherever data is pulled from multiple tables based on identical ID values from those ...Adding foreign keys ensures that referenced columns are indexed, which can improve ...
https://dev.mysql.com/doc/refman/5.7/en/optimizing-innodb-storage-layout.html
Once your data reaches a stable size, or a growing table has increased by tens or some hundreds of megabytes, consider using the OPTIMIZE TABLE statement to reorganize the table and compact any wasted space. The reorganized tables require less disk ...This is a straightforward technique that can improve performance when other techniques such as improving index usage or tuning application code are not ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-table-compression.html
Table compression is enabled using the ROW_FORMAT=COMPRESSED attribute with CREATE TABLE or ALTER TABLE. This section describes InnoDB table compression, which is supported with InnoDB tables that reside in file_per_table tablespaces or general ...
https://dev.mysql.com/doc/refman/5.7/en/archive-storage-engine.html
The ARCHIVE storage engine produces special-purpose tables that store large amounts of unindexed data in a very small footprint. When you create an ARCHIVE table, the server creates a table format file in the database directory. The file begins ...
https://dev.mysql.com/doc/refman/5.7/en/binary-log-mixed.html
When running in MIXED logging format, the server automatically switches from statement-based to row-based logging under the following conditions: When a DML statement updates an NDBCLUSTER table. When one or more tables with AUTO_INCREMENT columns ...Like all other unsafe statements, this generates a warning if binlog_format = ...
https://dev.mysql.com/doc/refman/5.7/en/firewall-reference.html
For information about MySQL Enterprise Firewall Information Schema tables, see Section 24.7, “INFORMATION_SCHEMA MySQL Enterprise Firewall Tables”. Each mysql system database table is accessible only by accounts that have the SELECT privilege ...