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https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-python-table-delete.html
You can use the delete() method to remove some or all records from a table in a database. All records matching the condition are deleted from the city table. mysql-py> db.city.delete().where("Name = 'Olympia'") Delete the First Record To delete the ...The X DevAPI provides additional methods to use with the delete() method to filter and order the records to be ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-accounts-table.html
The accounts table contains a row for each account that has connected to the MySQL server. For each account, the table counts the current and total number of connections. To set the table size explicitly, set the performance_schema_accounts_size ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-hosts-table.html
The hosts table contains a row for each host from which clients have connected to the MySQL server. For each host name, the table counts the current and total number of connections. To set the table size explicitly, set the ...This is NULL for an ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-connection-configuration-table.html
This table shows the configuration parameters used by the replica for connecting to the source. Parameters stored in the table can be changed at runtime with the CHANGE REPLICATION SOURCE TO statement (from MySQL 8.0.23) or CHANGE MASTER TO ...It ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-thread-pool-tables.html
Note The Performance Schema tables described here are available as of MySQL 8.0.14. Prior to MySQL 8.0.14, use the corresponding INFORMATION_SCHEMA tables instead; see Section 28.5, “INFORMATION_SCHEMA Thread Pool Tables”. The following ...They ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-user-defined-functions-table.html
The user_defined_functions table contains a row for each loadable function registered automatically by a component or plugin, or manually by a CREATE FUNCTION statement. For information about operations that add or remove table rows, see Section ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-users-table.html
The users table contains a row for each user who has connected to the MySQL server. For each user name, the table counts the current and total number of connections. To set the table size explicitly, set the performance_schema_users_size system ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-file-defragmenting.html
To speed up index scans, you can periodically perform a “null” ALTER TABLE operation, which causes MySQL to rebuild the table: ALTER TABLE tbl_name ENGINE=INNODB You can also use ALTER TABLE tbl_name FORCE to perform a “null” alter operation ...One symptom of fragmentation is that a table takes more space than it “should” ... Random ...
https://dev.mysql.com/doc/refman/8.0/en/create-view.html
(Selecting from the view selects, in effect, using the SELECT statement.) The select_statement can select from base tables or from other views. Beginning with MySQL 8.0.19, the SELECT statement can use a VALUES statement as its source, or can be ...
https://dev.mysql.com/doc/refman/8.0/en/data-dictionary-information-schema.html
In particular, for each INFORMATION_SCHEMA table that is a view on data dictionary tables: The server no longer must create a temporary table for each query of the INFORMATION_SCHEMA table. When the underlying data dictionary tables store values ...