# File sql-serialize.rb, line 278
  def sql_decrease_refcount (dbi, assoc_id)
    sql = "SELECT " + sql_quote_name("refs") + " FROM " + sql_quote_name("sql_ids") + 
      " WHERE " + sql_quote_name("id") + " = " + assoc_id.to_s
    dbi.select_all(sql) { |row|
      refs = row["refs"].dup
      refs.untaint
      refs -= 1
      sql = "UPDATE " + sql_quote_name("sql_ids") + " SET " + sql_quote_name("refs") + 
        " = " + refs.to_s + " WHERE " + sql_quote_name("id") + " = " + assoc_id.to_s
      dbi.do_more(sql)
    }
  end