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https://dev.mysql.com/doc/refman/9.7/en/sys-ps-truncate-all-tables.html
Example mysql> CALL sys.ps_truncate_all_tables(FALSE); +---------------------+ | summary | +---------------------+ | Truncated 49 tables | +---------------------+ . Truncates all Performance Schema summary tables, resetting all aggregated ...
https://dev.mysql.com/doc/refman/9.7/en/view-updatability.html
Some views are updatable and references to them can be used to specify tables to be updated in data change statements. That is, you can use them in statements such as UPDATE, DELETE, or INSERT to update the contents of the underlying table. Derived ...
https://dev.mysql.com/doc/refman/9.7/en/webauthn-pluggable-authentication.html
By default, the option is set to FALSE, indicating that assertions are to be created using all resident keys for a given RP ID. Note WebAuthn authentication is an extension included in MySQL Enterprise Edition, a commercial product. MySQL ...
https://dev.mysql.com/doc/refman/9.7/en/with.html
The optimizer cannot predict the number of iterations because it cannot predict at what point the WHERE clause becomes false. A common table expression (CTE) is a named temporary result set that exists within the scope of a single statement and ...
https://dev.mysql.com/doc/refman/9.7/en/working-with-null.html
In MySQL, 0 or NULL means false and anything else means true. The NULL value can be surprising until you get used to it. Conceptually, NULL means “a missing unknown value” and it is treated somewhat differently from other values. This special ...