将表SQL中的所有价格相加

我有以下SQL查询，它是对所选期间的旅游税求和

SELECT
     BTR_DESCRIPTION AS TOURIST_TAX_NAME,
     ISNULL(BREAG_TOURIST_TAX_PRICE,0) AS PRICE,
     SUM(DATEDIFF(d, BRE_DATEFROM, BRE_DATETO)) AS QUANTITY,
     ISNULL(BREAG_TOURIST_TAX_PRICE,0) * SUM(DATEDIFF(d, BRE_DATEFROM, BRE_DATETO)) AS FINAL_PRICE
FROM BOS_RESERVATION
     LEFT OUTER JOIN BOS_RESADDGUEST ON BREAG_BRE_ID = BRE_ID
     LEFT OUTER JOIN BOS_TAX_REASONS ON BTR_ID = BREAG_BTR_ID
WHERE BREAG_DATEFROM >= '2018-02-28' AND BREAG_DATETO <= '2018-03-31'
GROUP BY BTR_DESCRIPTION, BREAG_TOURIST_TAX_PRICE

但这给了我一个错误：无法对包含聚合或子查询的表达式执行聚合函数

您能帮助我如何计算最终价格行中的所有值的总和吗

---

谢谢

如果需要最终总价，请使用CTE或子查询：

WITH r as (
      SELECT BTR_DESCRIPTION AS TOURIST_TAX_NAME,
             COALESCE(BREAG_TOURIST_TAX_PRICE, 0) AS PRICE,
             SUM(DATEDIFF(day, BRE_DATEFROM, BRE_DATETO)) AS QUANTITY,
             COALESCE(BREAG_TOURIST_TAX_PRICE, 0) * SUM(DATEDIFF(day, BRE_DATEFROM, BRE_DATETO)) AS FINAL_PRICE
      FROM BOS_RESERVATION LEFT OUTER JOIN
           BOS_RESADDGUEST
           ON BREAG_BRE_ID = BRE_ID LEFT OUTER JOIN
           BOS_TAX_REASONS
           ON BTR_ID = BREAG_BTR_ID
      WHERE BREAG_DATEFROM >= '2018-02-28' AND BREAG_DATETO <= '2018-03-31'
      GROUP BY BTR_DESCRIPTION, BREAG_TOURIST_TAX_PRICE
     )
SELECT SUM(FINAL_PRICE)
FROM r;

---

您可以这样做：

WITH AggregatedTable as (SELECT
     BTR_DESCRIPTION AS TOURIST_TAX_NAME,
     ISNULL(BREAG_TOURIST_TAX_PRICE,0) AS PRICE,
     SUM(DATEDIFF(d, BRE_DATEFROM, BRE_DATETO)) AS QUANTITY,
     ISNULL(BREAG_TOURIST_TAX_PRICE,0) * SUM(DATEDIFF(d, BRE_DATEFROM, BRE_DATETO)) AS FINAL_PRICE
FROM BOS_RESERVATION
     LEFT OUTER JOIN BOS_RESADDGUEST ON BREAG_BRE_ID = BRE_ID
     LEFT OUTER JOIN BOS_TAX_REASONS ON BTR_ID = BREAG_BTR_ID
WHERE BREAG_DATEFROM >= '2018-02-28' AND BREAG_DATETO <= '2018-03-31'
GROUP BY BTR_DESCRIPTION, BREAG_TOURIST_TAX_PRICE)

Select at.*, 
    (SELECT SUM(FINAL_PRICE) from AggregatedTable)) as Total_FP 
from AggregatedTable AS at

---

最终价格不是一行，而是一列。所以您的问题不清楚。请尝试使用ROLLUP向GROUP by子句添加。删除GROUP by。谢谢您的帮助！谢谢你帮了我很多@马卡隆没问题，伙计！

WITH AggregatedTable as (SELECT
     BTR_DESCRIPTION AS TOURIST_TAX_NAME,
     ISNULL(BREAG_TOURIST_TAX_PRICE,0) AS PRICE,
     SUM(DATEDIFF(d, BRE_DATEFROM, BRE_DATETO)) AS QUANTITY,
     ISNULL(BREAG_TOURIST_TAX_PRICE,0) * SUM(DATEDIFF(d, BRE_DATEFROM, BRE_DATETO)) AS FINAL_PRICE
FROM BOS_RESERVATION
     LEFT OUTER JOIN BOS_RESADDGUEST ON BREAG_BRE_ID = BRE_ID
     LEFT OUTER JOIN BOS_TAX_REASONS ON BTR_ID = BREAG_BTR_ID
WHERE BREAG_DATEFROM >= '2018-02-28' AND BREAG_DATETO <= '2018-03-31'
GROUP BY BTR_DESCRIPTION, BREAG_TOURIST_TAX_PRICE)

Select at.*, 
    (SELECT SUM(FINAL_PRICE) from AggregatedTable)) as Total_FP 
from AggregatedTable AS at