Question

当我在mysql编辑器上运行时，我有以下查询在jasper报告中使用它时出现“无效使用group by”的错误，它不会产生任何错误？查询有什么问题？

SELECT CUSTOMERS.TAXID, 
CUSTOMERS.NAME AS CUSTOMER, 
CATEGORIES.NAME AS CATEGORY,
PRODUCTS.REFERENCE, 
PRODUCTS.NAME AS PRODUCT, 
SUM(TICKETLINES.UNITS) AS UNIT, 
SUM(TICKETLINES.UNITS * TICKETLINES.PRICE) AS TOTAL, 
SUM(TICKETLINES.UNITS * TICKETLINES.PRICE) / SUM(TICKETLINES.UNITS) AS MEANPRICE,
PRODUCTS.PRICEBUY AS BUYPRICE,
((SUM(SUM(TICKETLINES.PRICE) / SUM(TICKETLINES.UNITS)) - PRODUCTS.PRICEBUY) * TICKETLINES.UNITS) AS PROFITLOSS
FROM TICKETS 
LEFT OUTER JOIN CUSTOMERS ON TICKETS.CUSTOMER = CUSTOMERS.ID, TICKETLINES 
LEFT OUTER JOIN PRODUCTS ON TICKETLINES.PRODUCT = PRODUCTS.ID 
LEFT OUTER JOIN CATEGORIES ON PRODUCTS.CATEGORY = CATEGORIES.ID
WHERE RECEIPTS.ID = TICKETS.ID AND 
TICKETS.ID = TICKETLINES.TICKET AND 
CATEGORIES.ID = PRODUCTS.CATEGORY
GROUP BY CUSTOMERS.ID, CATEGORIES.ID, PRODUCTS.ID
ORDER BY CUSTOMERS.NAME, 
CATEGORIES.NAME, 
PRODUCTS.NAME

Answer 1

这似乎是因为你在利润损失推导中在一笔总和中做了一笔金额; where子句中还有一个复制join条件的条件，另一个条件复制到其他地方没有提到的别名receipt - 请尝试：

SELECT CUSTOMERS.TAXID, 
       CUSTOMERS.NAME AS CUSTOMER, 
       CATEGORIES.NAME AS CATEGORY,
       PRODUCTS.REFERENCE, 
       PRODUCTS.NAME AS PRODUCT, 
       SUM(TICKETLINES.UNITS) AS UNIT, 
       SUM(TICKETLINES.UNITS * TICKETLINES.PRICE) AS TOTAL, 
       SUM(TICKETLINES.UNITS * TICKETLINES.PRICE) / SUM(TICKETLINES.UNITS) AS MEANPRICE,
       PRODUCTS.PRICEBUY AS BUYPRICE,
       SUM( (TICKETLINES.PRICE - PRODUCTS.PRICEBUY) * TICKETLINES.UNITS ) AS PROFITLOSS
FROM TICKETS 
JOIN TICKETLINES ON TICKETS.ID = TICKETLINES.TICKET
LEFT OUTER JOIN CUSTOMERS ON TICKETS.CUSTOMER = CUSTOMERS.ID
LEFT OUTER JOIN PRODUCTS ON TICKETLINES.PRODUCT = PRODUCTS.ID 
LEFT OUTER JOIN CATEGORIES ON PRODUCTS.CATEGORY = CATEGORIES.ID
GROUP BY CUSTOMERS.ID, CATEGORIES.ID, PRODUCTS.ID
ORDER BY CUSTOMERS.NAME, CATEGORIES.NAME, PRODUCTS.NAME

Answer 2

您应该在SELECT组中包含所有组字段：

SELECT CUSTOMERS.ID, CATEGORIES.ID, PRODUCTS.ID,CUSTOMERS.TAXID, 
CUSTOMERS.NAME AS CUSTOMER, 
CATEGORIES.NAME AS CATEGORY,
PRODUCTS.REFERENCE, 
PRODUCTS.NAME AS PRODUCT, 
SUM(TICKETLINES.UNITS) AS UNIT, 
SUM(TICKETLINES.UNITS * TICKETLINES.PRICE) AS TOTAL, 
SUM(TICKETLINES.UNITS * TICKETLINES.PRICE) / SUM(TICKETLINES.UNITS) AS MEANPRICE,
PRODUCTS.PRICEBUY AS BUYPRICE,
((SUM(SUM(TICKETLINES.PRICE) / SUM(TICKETLINES.UNITS)) - PRODUCTS.PRICEBUY) * TICKETLINES.UNITS) AS PROFITLOSS
FROM TICKETS 
LEFT OUTER JOIN CUSTOMERS ON TICKETS.CUSTOMER = CUSTOMERS.ID, TICKETLINES 
LEFT OUTER JOIN PRODUCTS ON TICKETLINES.PRODUCT = PRODUCTS.ID 
LEFT OUTER JOIN CATEGORIES ON PRODUCTS.CATEGORY = CATEGORIES.ID
WHERE RECEIPTS.ID = TICKETS.ID AND 
TICKETS.ID = TICKETLINES.TICKET AND 
CATEGORIES.ID = PRODUCTS.CATEGORY
GROUP BY CUSTOMERS.ID, CATEGORIES.ID, PRODUCTS.ID
ORDER BY CUSTOMERS.NAME, 
CATEGORIES.NAME, 
PRODUCTS.NAME

在mySql中无效使用Group by

2 个答案: