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https://dev.mysql.com/doc/refman/9.7/en/optimizing-innodb-bulk-data-loading.html
For optimal performance when loading data into an InnoDB FULLTEXT index, follow this set of steps: Define a column FTS_DOC_ID at table creation time, of type BIGINT UNSIGNED NOT NULL, with a unique index named FTS_DOC_ID_INDEX. For example: CREATE ... These performance tips supplement the general guidelines for fast inserts in Section 10.2.5.1, “Optimizing INSERT ...
https://dev.mysql.com/doc/refman/9.7/en/optimizing-innodb-storage-layout.html
For tables that are big, or contain lots of repetitive text or numeric data, consider using COMPRESSED row format. Once your data reaches a stable size, or a growing table has increased by tens or some hundreds of megabytes, consider using the ...
https://dev.mysql.com/doc/refman/9.7/en/optimizing-queries-myisam.html
For MyISAM tables that change frequently, try to avoid all variable-length columns (VARCHAR, BLOB, and TEXT). Some general tips for speeding up queries on MyISAM tables: To help MySQL better optimize queries, use ANALYZE TABLE or run myisamchk ...
https://dev.mysql.com/doc/refman/9.7/en/option-tracker-component-functions.html
You can obtain this value, using UTC_DATE() and UTC_TIME(), similarly to what is shown here (emphasized text): SELECT option_tracker_option_set( 'Berry Picker', CONCAT(UTC_DATE(), 'T', UTC_TIME(), 'Z') ); The form of usage_data shown, with the keys ... The Option Tracker provides the functions shown in the next ...
https://dev.mysql.com/doc/refman/9.7/en/option-tracker-component-tables.html
For more information, see Section 6.5.1.5, “Executing SQL Statements from a Text File”. This table, like other Performance Schema tables, is read-only, and thus cannot be updated or truncated by users. See Section 29.12.22.7, “The mysql_option ...
https://dev.mysql.com/doc/refman/9.7/en/partitioning-columns.html
The next two sections discuss COLUMNS partitioning, which are variants on RANGE and LIST partitioning. COLUMNS partitioning enables the use of multiple columns in partitioning keys. All of these columns are taken into account both for the purpose ...
https://dev.mysql.com/doc/refman/9.7/en/partitioning-key.html
Partitioning by key is similar to partitioning by hash, except that where hash partitioning employs a user-defined expression, the hashing function for key partitioning is supplied by the MySQL server. NDB Cluster uses MD5() for this purpose; for ...
https://dev.mysql.com/doc/refman/9.7/en/partitioning-maintenance.html
If you have deleted a large number of rows from a partition or if you have made many changes to a partitioned table with variable-length rows (that is, having VARCHAR, BLOB, or TEXT columns), you can use ALTER TABLE ... A number of table and ...
https://dev.mysql.com/doc/refman/9.7/en/password-security-user.html
Passwords can be written as plain text in SQL statements such as CREATE USER and ALTER USER, so if you use these statements, they are logged in the history file. MySQL users should use the following guidelines to keep passwords secure. When you run ...
https://dev.mysql.com/doc/refman/9.7/en/performance-schema-replication-tables.html
The Executed_Gtid_Set field can show a large set with a great deal of text. This is similar to the information available from the SHOW REPLICA STATUS statement, but representation in table form is more accessible and has usability benefits: SHOW ...