1

簡単な計算を行う 1 つのクエリとして実行する方法がわからない 2 つのクエリがあります。

SELECT count(*) FROM CUSTOMERINFO
where member between '2013-01-01' and '2013-12-31'

戻り値: 7823

select COUNT(DISTINCT ORDERINFO.OrderID) from orderinfo, orderiteminfo 
where code = '810samp' 
AND ORDERINFO.OrderID = ORDERITEMINFO.OrderID
AND orderinfo.PrepareDate between '2013-01-01' and '2013-12-31'

戻り値: 4106

クエリを返す必要があります: 4106 / 7823 X 100

4

2 に答える 2

1

テストされていないコードですが、これでうまくいくはずです：

SELECT (SELECT count(*) FROM CUSTOMERINFO
where member between '2013-01-01' and '2013-12-31') / 
(select COUNT(DISTINCT ORDERINFO.OrderID) from orderinfo, orderiteminfo 
where code = '810samp' 
AND ORDERINFO.OrderID = ORDERITEMINFO.OrderID
AND orderinfo.PrepareDate between '2013-01-01' and '2013-12-31')
* 100

代替は

DECLARE @int1 as int
DECLARE @int2 as int
SET @int1 = (SELECT count(*) FROM CUSTOMERINFO
    where member between '2013-01-01' and '2013-12-31')
SET @int2 = (select COUNT(DISTINCT ORDERINFO.OrderID) from orderinfo, orderiteminfo 
    where code = '810samp' 
    AND ORDERINFO.OrderID = ORDERITEMINFO.OrderID
    AND orderinfo.PrepareDate between '2013-01-01' and '2013-12-31')
SELECT @int1/@int2 X 100
于 2013-06-29T07:18:25.383 に答える
1

次の構文を使用してください。

SELECT (
  CAST((<your first query>) as decimal)
  /(<your second query>)
  * 100
  ) AS Percents;

だからあなたのクエリは

SELECT (
  CAST((select COUNT(DISTINCT ORDERINFO.OrderID) from orderinfo, orderiteminfo 
        where code = '810samp' 
        AND ORDERINFO.OrderID = ORDERITEMINFO.OrderID
        AND orderinfo.PrepareDate between '2013-01-01' and '2013-12-31') as decimal)
  /(SELECT count(*) FROM CUSTOMERINFO
    where member between '2013-01-01' and '2013-12-31')
  * 100
  ) AS Percents;

このSQLFiddleを参照してください

于 2013-06-29T07:20:41.817 に答える