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 PROCEDUREEXTERNAL FUNCTION 

DROP FUNCTION

Drops a stored function

Available in

DSQL

Syntax
DROP FUNCTION funcname
Table 1. DROP FUNCTION Statement Parameters
Parameter Description

funcname

Stored function name.The maximum length is 63 characters.Must be unique among all function names in the database.

The DROP FUNCTION statement deletes an existing stored function.If the stored function has any dependencies, the attempt to delete it will fail, and raise an error.

Who Can Drop a Function

The DROP FUNCTION statement can be executed by:

  • Administrators

  • Owner of the stored function

  • Users with the DROP ANY FUNCTION privilege

docnext count = 3

Examples of DROP FUNCTION

DROP FUNCTION ADD_INT;
See also

[fblangref50-ddl-func-create], [fblangref50-ddl-func-creatalter], [fblangref50-ddl-func-recreate]

RECREATE FUNCTION

Drops a stored function if it exists, and creates a stored function

Available in

DSQL

Syntax
RECREATE FUNCTION funcname
  [ ( [ <in_params> ] ) ]
  RETURNS <domain_or_non_array_type> [COLLATE collation]
  [DETERMINISTIC]
  {<psql_function> | <external-module-body>}

!! See syntax of CREATE FUNCTION for further rules !!

The RECREATE FUNCTION statement creates a new stored function or recreates an existing one.If there is a function with this name already, the engine will try to drop it and then create a new one.Recreating an existing function will fail at COMMIT if the function has dependencies.

Note

Be aware that dependency errors are not detected until the COMMIT phase of this operation.

After a procedure is successfully recreated, existing privileges to execute the stored function and theprivileges of the stored function itself are dropped.

Examples of RECREATE FUNCTION

Creating or recreating a stored function
RECREATE FUNCTION ADD_INT(A INT, B INT DEFAULT 0)
RETURNS INT
AS
BEGIN
  RETURN A + B;
EN
See also

[fblangref50-ddl-func-create], [fblangref50-ddl-func-drop]