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 EXTERNAL FUNCTIONPACKAGE BODY 

Examples of ALTER PACKAGE

Modifying a package header
ALTER PACKAGE APP_VAR
AS
BEGIN
  FUNCTION GET_DATEBEGIN() RETURNS DATE DETERMINISTIC;
  FUNCTION GET_DATEEND() RETURNS DATE DETERMINISTIC;
  PROCEDURE SET_DATERANGE(ADATEBEGIN DATE,
      ADATEEND DATE DEFAULT CURRENT_DATE);
END
See also

[fblangref50-ddl-pkg-create], [fblangref50-ddl-pkg-drop], ALTER PACKAGE BODY, RECREATE PACKAGE BODY

CREATE OR ALTER PACKAGE

Creates a package header if it does not exist, or alters a package header

Available in

DSQL

Syntax
CREATE OR ALTER PACKAGE package_name
[SQL SECURITY {INVOKER | DEFINER}]
AS
BEGIN
  [ <package_item> ... ]
END

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

The CREATE OR ALTER PACKAGE statement creates a new package or modifies an existing package header.If the package header does not exist, it will be created using CREATE PACKAGE.If it already exists, then it will be modified using ALTER PACKAGE while retaining existing privileges and dependencies.