解决 SQL 遇到被零除错误 & 直接算出带%分号的毛利率

 

通过case 语句 解决 SQL 遇到被零除错误

简单 CASE 函数：

CASE input_expression
WHEN when_expression THEN result_expression
[ ...n ]
[
        ELSE else_result_expression
END

通过CONVERT 解决%问题

使用 CONVERT：

CONVERT (data_type[(length)], expression [, style])

 

举例如下：

   1:  select ShopCode,

   2:         Sum(Cost) as SumCost,

   3:         Sum(OutCost) as SumOutCost,

   4:         Sum(SaleAmt) as SumSaleAmt,

   5:         Sum(DscTotal) as SumDscTotal,

   6:         Sum(OthSaleAmt) as SumOthSaleAmt,

   7:         Sum(OthDscTotal) as SumOthDscTotal,

   8:         Sum(AdjTotal) as SumAdjTotal,

   9:  --这句是关键   第一个 算出毛利率 %  第二个出现除数为0 的时候 除数变成0.01  *100 变成1 呵呵 解决 SQL 遇到被零除错误

  10:         rtrim(convert(numeric(18,2),((Sum(SaleAmt)-Sum(Cost)-Sum(AdjTotal))/

 (case when Sum(SaleAmt)=0 then 0.01 else (saleAmt) end)*100)))+'%',

  11:         Sum(VipDscOf + OthVipDscOf) as SumVipDscOf

  12:    from ShopSaleDep

  13:   where (YWDate >= '2011-06-01' and YWDate <= '2011-06-02')

  14:   group by ShopCode 

  15:   

  16:  -----销售汇总  MS - SQL 2000 中遇到