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Rechercher dans le manuel MySQL
13.7.4.2 DROP FUNCTION Syntax
This statement drops the user-defined function (UDF) named
function_name.
To drop a function, you must have the
DELETE privilege for the
mysql system database. This is because
DROP FUNCTION removes a row from
the mysql.func system table that records the
function's name, type, and shared library name.
To upgrade the shared library associated with a UDF, issue a
DROP FUNCTION statement,
upgrade the shared library, and then issue a
CREATE FUNCTION statement. If
you upgrade the shared library first and then use
DROP FUNCTION, the server may
crash.
DROP FUNCTION is also used to
drop stored functions (see Section 13.1.29, “DROP PROCEDURE and DROP FUNCTION Syntax”).
Document created the 26/06/2006, last modified the 26/10/2018
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