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https://dev.mysql.com/doc/refman/9.7/en/sys-ps-truncate-all-tables.html
Truncates all Performance Schema summary tables, resetting all aggregated instrumentation as a snapshot. Parameters in_verbose BOOLEAN: Whether to display each TRUNCATE TABLE statement before executing it. Example mysql> CALL ...
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
Note WebAuthn authentication is an extension included in MySQL Enterprise Edition, a commercial product. MySQL Enterprise Edition supports an authentication method that enables users to authenticate to MySQL Server using WebAuthn authentication.
https://dev.mysql.com/doc/refman/9.7/en/with.html
A common table expression (CTE) is a named temporary result set that exists within the scope of a single statement and that can be referred to later within that statement, possibly multiple times. The following discussion describes how to write ...
https://dev.mysql.com/doc/refman/9.7/en/working-with-null.html
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. In MySQL, 0 or NULL means false and anything else means true. This special ...