根据特定条件计算布尔值

Question

亲爱的All，附带的是sql server 2016数据库表。我希望根据条件AssetTypeID获取真实和flase值的列IsAssetIssued计数。我正在尝试

SELECT COUNT(IsAssetIssued) AS AvlAssets 
FROM AssetStatus 
WHERE (IsAssetIssued = True) 
  AND (AssetTypeID = 1)

但这不会为列中的错误值提供准确的结果。请提出更好的解决方案。

谢谢，

Answer 1

试试这个;

SELECT COUNT(IsAssetIssued) AS AvlAssets ,IsAssetIssued
FROM AssetStatus 
WHERE (AssetTypeID = 1)
group by IsAssetIssued

Answer 2

试试这个

SELECT AssetTypeID,IsAssetIssued FROM 
(
SELECT AssetTypeID,IsAssetIssued,
COUNT(IsAssetIssued) OVER(Partition by AssetTypeID Order by AssetTypeID )AS AvlAssets ,
ROW_NUMBER()OVER(Partition by AssetTypeID Order by AssetTypeID ) AS Seq
FROM AssetStatus 
)Dt
WHERE Dt.Seq=1

Answer 3

感谢您的帮助，人们帮助我登录。查询中只有轻微的变化，即我将IsAssetIssued值固定为false并将AssetTypeID设置为动态。

SELECT COUNT（IsAssetIssued）AS AvlAssets FROM AssetStatus WHERE（IsAssetIssued =＆＃39; False＆＃39;）AND（AssetTypeID = 1）;

它完美无缺。