tsql - 获取数据过滤器所需的 TSQL Hack

Question

UI（在报告显示之前）显示了一个查找（组合），它具有

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

我需要：

4. 如果选择 (0)，则能够显示 (4) + (5) 的数据。
5. 如果选择 HR 或 DEV，则只有 (4) 或 (5)。

---

查找组合代码（在以下查询中选择提供参数。）

---

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')

---

---

报表数据行查询

---

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)); 

---

有什么办法可以从它的外观上实现它？0=0 也会显示其他部门的所有数据..

任何人：-o？

Answer 1

首先，您的查找组合代码可以收紧一点：

-- 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')

对于报告查询，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

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

Answer 3

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));

Answer 4

试试这个，它应该在你的查询中使用索引......

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 的版本可以工作，但是这个查询不需要临时表......

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