TSQL黑客需要得到一个过滤器的数据

Question

UI(前的报告显示)表示看起来(组合)，

• (ID=0).所有组织单位
• (ID=4).HR
• (ID=5).DEV

我需要：

4. 能够表现出数据(4)+(5)如果 (0)是选择。
5. 只有(4)或(5)如果人力资源或开发选择。

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查找组合代码(选择的供稿中的参数如下查询。)

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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')

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报告数据的行查询

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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)); 

---

任何办法可以实现这看起来吗？0=0将显示所有的数据从其他 部门。

任何人：-o？

Answer 1

第一关，你找组合的代码可以被收紧了一点:

-- 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')

对于所报告的查询，最简单的形式是：

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

Answer 2

像这样的东西应该工作的

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

Answer 3

试试这个，这应该使用索引，查询...

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 4

公里的版本将工作，但这种查询并不需要一个临时表...

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

Answer 5

怎么样

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));