我试图将table1中两列的结果相互减去,如果该表中存在数据,则从table2中添加总数。并不总是会有table2中的数据,所以如果没有任何内容,我需要使用“0”。到目前为止,这是我在表2中有数据时返回错误数量的内容。
SELECT
CONVERT(CHAR(10),table1.PostingDate, 120) AS business_date,
table1.Location AS store_number,
(CASE WHEN COUNT(table2.Document) > 0 THEN
SUM(table1.Total - table1.TipAmount + table2.Total)
Else
SUM(table1.Total-table1.TipAmount)
END) AS net_sales_ttl
FROM table1
left join table2
on CONVERT(CHAR(10),table1.PostingDate, 120) = CONVERT(CHAR(10),table2.PostingDate, 120)
WHERE table1.PostingDate between '2012-09-09' and '2012-09-16'
GROUP BY CONVERT(CHAR(10),table1.PostingDate, 120), table1.Location
结果如下:
business_date store_number net_sales_ttl
2012-09-09 xxx 1699.61
2012-09-10 xxx 923.56
2012-09-11 xxx 1230.93 <--This should be 1399.93
2012-09-12 xxx 874.98
2012-09-13 xxx 1342.21
2012-09-14 xxx 1609.6
2012-09-15 xxx 2324.31
由于某种原因,查询没有正确地进行数学运算并返回错误的值。 table2具有值的唯一一天是09-11-12,该数量仅为-1.00。它给了我1230.93,这是正确值的-169。我不知道-169应该在-1.00时来自哪里。 table1中的原始金额为1400.93,而table2应从-1.00中减去,结果为1399.93。
Sample data:
table1 has date, location, and sales
09-09 1111 5.00
09-10 1111 3.00
09-11 1111 7.00
09-12 1111 10.00
table2 has refunds
09-11 1111 -1.00
Return set would look like this:
09-09 1111 5.00
09-10 1111 3.00
09-11 1111 6.00 <--Reflecting the refund from table2
09-12 1111 10.00