text: -- Database: oracle
  -- Change Parameter: column1Name=first_name
  -- Change Parameter: column2Name=last_name
  -- Change Parameter: finalColumnName=full_name
  -- Change Parameter: finalColumnType=varchar(255)
  -- Change Parameter: tableName=person
  ALTER TABLE person ADD full_name VARCHAR2(255);
  UPDATE person SET full_name = first_name || 'null' || last_name;
  ALTER TABLE person DROP COLUMN first_name;
  ALTER TABLE person DROP COLUMN last_name;
  