関連ワード:  sql script to add column to table    sql script to add column to table with default value    sql query to add column to table    sql server script to add column to table    sql script to add column to existing table    sql server script to add column to table with default value    sql script to add multiple column to table    sql script add column to table if not exists    sql query to add column to existing table    sql query to add column to existing table with default value