text: -- // Create Changelog
  
  -- Default DDL for changelog table that will keep
  -- a record of the migrations that have been run.
  
  -- You can modify this to suit your database before
  -- running your first migration.
  
  -- Be sure that ID and DESCRIPTION fields exist in
  -- BigInteger and String compatible fields respectively.
  
  CREATE TABLE ${changelog} (
  ID NUMERIC(20,0) NOT NULL,
  APPLIED_AT VARCHAR(25) NOT NULL,
  DESCRIPTION VARCHAR(255) NOT NULL
  );
  
  ALTER TABLE ${changelog}
  ADD CONSTRAINT PK_${changelog}
  PRIMARY KEY (id);
  
  -- //@UNDO
  
  DROP TABLE ${changelog};
  