Sql 仅在位=1时使用where子句

我有一些SQL代码现在看起来像这样

    insert into @SortedProducts (peid)
    select pd.ProductEntryId 
    from @ProductFilters FILT
        INNER JOIN J_ProductDetails pd ON FILT.ProductEntryId = pd.ProductEntryId
    WHERE pd.Active = 'True'
    and pd.IsRangeOfProducts = CASE WHEN @ClearanceFeatureApplied = 1 then 0 else 1 END 

但是，在最后一行，我只想在@ClearanceFeatureApplied=1时应用where子句

如果@ClearanceFeatureApplied=0，那么我不应该有这个where子句。产品的pd.I范围也有点大

如有任何建议，将不胜感激

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谢谢

只需使用布尔逻辑：

insert into @SortedProducts (peid)
    select pd.ProductEntryId 
    from @ProductFilters FILT join
         J_ProductDetails pd 
         on FILT.ProductEntryId = pd.ProductEntryId
    where pd.Active = 'True' and
          (@ClearanceFeatureApplied <> 1  or pd.IsRangeOfProducts = 0) ;

插入@SortedProducts（peid）
选择pd.ProductEntryId
来自@ProductFilters FILT join
J_产品详细信息pd
在FILT.ProductEntryId=pd.ProductEntryId上
其中pd.Active='True'和
（@ClearanceFeatureApplied 1或pd.IsRangeOfProducts=0）；

当@ClearanceFeatureApplied=0时，您可以将OR添加到where子句（用括号括起来）以忽略此部分：

insert into @SortedProducts (peid)
select pd.ProductEntryId 
from @ProductFilters FILT
    INNER JOIN J_ProductDetails pd ON FILT.ProductEntryId = pd.ProductEntryId
WHERE pd.Active = 'True'
and (@ClearanceFeatureApplied = 0 OR pd.IsRangeOfProducts = CASE WHEN @ClearanceFeatureApplied = 1 then 0 else 1 END)

---

如果您的位列中有空值，则需要对此进行组合。

如果我理解正确，则可能类似于：

WHERE pd.Active = 'True'
    and 1 = CASE WHEN @ClearanceFeatureApplied = 0 THEN 1 
                 WHEN pd.IsRangeOfProducts = 0 THEN 1  -- XX
                 ELSE 0 END

以上假设@ClearanceFeatureApplied将不为空。 如果您到达第XX行，那么@ClearanceFeatureApplied将始终为1， 所以我优化了条件：

 and pd.IsRangeOfProducts = CASE WHEN @ClearanceFeatureApplied = 1 then 0 else 1 END 

致：

---

其中@ClearanceFeatureApplied=1和pd.Active='True'和pd.IsRangeOfProducts=0您不觉得条件在哪里看起来很奇怪吗？当@ClearanceFeatureApplied=0时，此查询无法使条件“pd.Active='True'”忽略这就是为什么有括号的原因。这意味着在检查pd.Active之前将首先解决它。您可以这样简化：

其中pd.Active='True'和（@ClearanceFeatureApplied=0或pd.IsRangeOfProducts=~@ClearanceFeatureApplied）

这是一个更好的答案，但我认为应该是

（@ClearanceFeatureApplied 1或pd.IsRangeOfProducts=0）

-如果@ClearanceFeatureApplied=1，则您只需要pd.IsRangeOfProducts=~@ClearanceFeatureApplied@GordonLinoff非常感谢：）

  pd.IsRangeOfProducts = 0