The following query finds the sum of order quantities and line totals by product type, and then computes the grand total of order quantities and line totals.是什么意思_The following query finds the sum of order quantities and line totals by product type, and then computes the grand total of order quantities and line totals.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句