MYSQL Temporary tables is the functionality provided by various RDBMS. This is used to create temporary tables which provide same funtionalities as of regular tables such as SELECT, UPDATE, INSERT, DELETE options but for the current logged in session only.
Temporary tables acts very useful when we need to operate some operation on temporary data for temporary cases. As we know temporary tables only exist for the current logged in session in database so you will not find you temporary table once you log out and login again.
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Incorrect table definition there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT or ON UPDATE clause