Question

我正在尝试运行一个查询，查找过去x年没有购买任何东西的客户。我不确定是使用循环，还是使用BETWEEN关键字。

如果您需要查看表格，请告诉我，谢谢。

-- Find out the information of the customers who have not purchased anything in the 
--last couple of years. Give the number of years (e.g., 1,2,3,4).

create procedure purchaseYear(@year int)
AS

select *
from customer
where CID IN(
select CID from item 
where ItemNum IN (
select ItemNum from sale
where year(Comp_Date) =  Between year(getdate()) AND @year))

Answer 1

像这样的东西

Declare @Year int = 7

Select A.*
 From  Customer A
 Join (Select CID
        From  Item
        Group By CID
        Having max(Comp_Date)<=DateAdd(YY,-@Year,cast(GetDate() as date))
      ) B
   on A.CID=B.CID

Answer 2

看看是否有效。

BEGIN

set @mulai=_tanggalmulai;
set @akhir=_tanggalakhir;

IF @mulai <> '' && @akhir <> '' THEN
SET @setWhere=' and date(created_at) between STR_TO_DATE(@mulai,''%d/%m/%Y'') and STR_TO_DATE(@akhir,''%d/%m/%Y'')';
ELSEIF @mulai <> '' && @akhir = '' THEN
SET @setWhere=' and date(created_at) > NOW()';
ELSEIF @mulai = '' && @akhir <> '' THEN
SET @setWhere=' and date(created_at) < NOW()';
ELSE
SET @setWhere=' ';
END IF;

SET @qry=CONCAT('SELECT id,norekammedik,nama,jeniskelamin,tempatlahir,nohp,alamat,DATE_FORMAT(tanggallahir,''%d/%m/%Y'') as tanggallahir,DATE_FORMAT(created_at,''%d/%m/%Y'') as created_at FROM pasien where 1=1',@setWhere,' ORDER BY id DESC');

PREPARE stmt FROM @qry;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

END

Answer 3

如果您将问题改为＆＃34;我想找到最近购买时间超过x年的公司＆＃34;答案应该清楚。

; with companyAndLastPurchaseAge as (
   Select companyId, max(DateDiff(y, saledate, getdate())) YearsAgo
   From sale
   Group by companyId
 )
 select cid.*
 From cid 
     Left join companyAndLastPurchaseYear cp
         On cp.CompanyId = cid.companyId and yearsago < x
 Where cp.companyid is null;

Answer 4

    create procedure purchaseYear(@year int)
    AS


    select *
    from customer as c 
    where not exists(
        Select item.CID from sale
        inner join item on item.ItemNum=sale.ItemNum
        where item.CID=c.CID and datediff(year,Comp_Date,GETDATE())  Between 0 AND @year 
    )

SQL - 在过去的x年中没有销售额

4 个答案: