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https://dev.mysql.com/doc/refman/5.7/en/innodb-file-format-enabling.html
The innodb_file_format setting is not applicable when using the TABLESPACE [=] innodb_system table option with CREATE TABLE or ALTER TABLE to store a DYNAMIC table in the system tablespace. The innodb_file_format setting is ignored when creating ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-information-schema-metrics-table.html
Create a simple InnoDB table: mysql> USE test; Database changed mysql> CREATE TABLE t1 (c1 INT) ENGINE=INNODB; Query OK, 0 rows affected (0.02 sec) Enable the dml_inserts counter. The INNODB_METRICS table provides information about InnoDB ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-memcached-porting-memcached.html
You might create additional secondary indexes on tables that are frequently used to generate reports using SQL. This is because InnoDB performs best for large-scale insertions if primary key values are added in sorted order (as they are with ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-memcached-replication.html
Use mysqldump to create a source data snapshot, and sync the snapshot to the replica server. mysql> CHANGE MASTER TO MASTER_HOST='localhost', MASTER_USER='root', MASTER_PASSWORD='', MASTER_PORT = 13000, MASTER_LOG_FILE='0.000001, MASTER_LOG_POS=114; ... Because the daemon_memcached plugin supports the MySQL binary log, updates made on a source server through the memcached interface can be replicated for backup, balancing intensive read workloads, and high ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-memcached-tuning.html
Because of the way InnoDB organizes memcached key values on disk, if you have a large number of keys to create, it may be faster to sort the data items by key value in the application and add them in sorted order, rather than create keys in ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-online-ddl-failure-conditions.html
The tmpdir or innodb_tmpdir file system runs out of disk space, while MySQL writes temporary sort files on disk during index creation. For example, you might insert duplicate values into a column while a unique index is being created, or you might ... The failure of an online DDL operation is typically due to one of the following conditions: An ALGORITHM clause specifies an algorithm that is not compatible with the particular type of DDL operation or storage ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-restrictions-limitations.html
You cannot create a table with a column name that matches the name of an internal InnoDB column (including DB_ROW_ID, DB_TRX_ID, and DB_ROLL_PTR. mysql> CREATE TABLE t1 (c1 INT, db_row_id INT) ENGINE=INNODB; ERROR 1166 (42000): Incorrect column name ... This section describes restrictions and limitations of the InnoDB storage ...
https://dev.mysql.com/doc/refman/5.7/en/insert-on-duplicate.html
If you specify an ON DUPLICATE KEY UPDATE clause and a row to be inserted would cause a duplicate value in a UNIQUE index or PRIMARY KEY, an UPDATE of the old row occurs. If column b is also unique, the INSERT is equivalent to this UPDATE statement ...
https://dev.mysql.com/doc/refman/5.7/en/insert-select.html
When selecting from and inserting into the same table, MySQL creates an internal temporary table to hold the rows from the SELECT and then inserts those rows into the target table. To ensure that the binary log can be used to re-create the original ... INSERT [LOW_PRIORITY | HIGH_PRIORITY] [IGNORE] [INTO] tbl_name [PARTITION (partition_name [, partition_name] ...)] [(col_name [, col_name] ...)] SELECT ...
https://dev.mysql.com/doc/refman/5.7/en/insert.html
If both the column list and the VALUES list are empty, INSERT creates a row with each column set to its default value: INSERT INTO tbl_name () VALUES(); If strict mode is not enabled, MySQL uses the implicit default value for any column that has no ... INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE] [INTO] tbl_name [PARTITION (partition_name [, partition_name] ...)] [(col_name [, col_name] ...)] {VALUES | VALUE} (value_list) [, (value_list)] ...