TSQL哈克需要用於獲取對數據的過濾器

Question

的UI（報告顯示之前）示出了一個查找（組合），其具有

• （ID = 0）。所有組織單元
• （ID = 4）.HR
• （ID = 5）.DEV

我需要：

如果選擇 （0），能夠顯示（4）+（5）的數據。

僅限（4）或（5）如果選擇了HR或DEV。

---

查找組合代碼（所選資訊在下面的查詢參數。）

---

Select 0 AS ID,'All Org' AS Name from DP_ORG_OrganizationUnit 
where DP_ORG_OrganizationUnit.Code IN {AccessData} 
Union 
SELECT 
DP_ORG_OrganizationUnit.ID, 
DP_ORG_OrganizationUnit.Name 
FROM DP_ORG_OrganizationUnit where DP_ORG_OrganizationUnit.Code IN ('HR','DEV') 

---

---

報告數據行查詢

---

SET CONCAT_NULL_YIELDS_NULL OFF 

DECLARE @EmpID as int; 
DECLARE @OrganizationUnit as int; 
DECLARE @StartDate as datetime; 
DECLARE @EndDate as datetime; 

SET @EmpID = ?; 
SET @StartDate = ?; 
SET @EndDate = ?; 
SET @OrganizationUnit = ?; 

SELECT 
Employee.Code, 
Employee.Name1+' '+Employee.Name2+' '+Employee.Name3+' '+Employee.Name4+' '+Employee.Name5 AS FullName, 
Employee.OrganizationUnit, 
ContractType.Name, 
EmployeeContract.StartDate, 
EmployeeContract.EndDate 
FROM Employee INNER JOIN (ContractType INNER JOIN EmployeeContract 
ON ContractType.ID = EmployeeContract.ContractType) 
ON Employee.ID = EmployeeContract.Employee 
WHERE (Employee.ID = @EmpID OR @EmpID=0) 
AND 
(Employee.OrganizationUnit = @OrganizationUnit OR @OrganizationUnit=0) 
AND NOT((EndDate < @StartDate or StartDate > @EndDate)); 

---

任何方式，我可以從它的外觀實現它？ 0 = 0會顯示來自其他 部門的所有數據..

任何人：-o？

Answer 1

首先，您的查找組合碼可能會收緊一點：

-- the FROM clause was superfluous 
SELECT 0 AS ID,'All Org' AS Name 
UNION ALL 
-- the two-part identifiers were superfluous (only one table) 
SELECT ID, Name 
FROM DP_ORG_OrganizationUnit 
WHERE Code IN ('HR','DEV') 

對於報表查詢，最簡單的形式是：

WHERE 
    ((@OrganizationUnit > 0 AND Employee.OrganizationUnit = @OrganizationUnit) OR 
    (@OrganizationUnit = 0 AND Employee.OrganizationUnit IN (4,5))) 

Answer 2

這樣的事情應該工作

Where (Employee.OrganizationUnit = case when @OrganizationUnit=0 then 4 else @OrganizationUnit end OR case when @OrganizationUnit=0 then 5 else @OrganizationUnit end) 

Answer 3

如何

WHERE (Employee.ID = @EmpID OR @EmpID=0) 
AND 
(Employee.OrganizationUnit BETWEEN ISNULL(NULLIF(@OrganizationUnit,0),0) AND ISNULL(NULLIF(@OrganizationUnit,0),99)) 
AND NOT((EndDate < @StartDate or StartDate > @EndDate)); 

Answer 4

試試這個，這應該對您的查詢使用索引...

DECALRE @FilterValues (FilterValue int not null primary key) 

IF @Param=0 
BEGIN 
    INSERT INTO @FilterValues VALUES (4) 
    INSERT INTO @FilterValues VALUES (5) 
END 
ELSE ID @PAram IS NOT NULL 
BEGIN 
    INSERT INTO @FilterValues VALUES (@Param) 
END 

SELECT 
    .... 
    FROM YourTable    y 
     INNER JOIN @FilterValues f ON y.Value=f.Value 
    WHERE ..... 

Answer 5

KM的版本將工作，但此查詢並不需要一個臨時表...

SELECT * 
FROM Employee 
WHERE (
     @OrganizationUnit = 0 
     OR 
     (
      @OrganizationUnit <> 0 
      AND 
      Employee.OrganizationUnit = @OrganizationUnit 
     ) 
    )