Question

我关注的数据包含培训，过滤器和用户记录。以下脚本将创建欲望表，需要根据某些规则应用过滤条件。

CREATE TABLE #Training (Id INT, Topic VARCHAR(50), [Status] VARCHAR(50));
INSERT INTO #Training SELECT 1, 'International Sales Training', 'Active';
INSERT INTO #Training SELECT 2, 'AMAR Sales Training', 'Active';
INSERT INTO #Training SELECT 3, 'APAC Sales Training', 'Active';
INSERT INTO #Training SELECT 4, 'General Training', 'Active';
INSERT INTO #Training SELECT 5, 'Manager Training', 'Active';

 CREATE TABLE #Filter (Id INT, Condition VARCHAR(50), Parameter VARCHAR(50), TrainingId int);
 INSERT INTO #Filter SELECT 1, 'Department', 'Sales', 1;
 INSERT INTO #Filter SELECT 2, 'Division', 'International Sales', 2;
 INSERT INTO #Filter SELECT 3, 'Place', 'AMAR', 2;
 INSERT INTO #Filter SELECT 4, 'Designation', 'Manager', 1;
 INSERT INTO #Filter SELECT 5, 'Designation', 'Developer', 4;

 CREATE TABLE #User (Id INT, Name VARCHAR(50), Place VARCHAR(50), Country 
 VARCHAR(50), Department VARCHAR(50), Division VARCHAR(50), SubDivision 
 VARCHAR(50), [Location] VARCHAR(50), Designation VARCHAR(50));
 INSERT INTO #User SELECT 1, 'John', 'EMEA', 'UK', 'Sales', 'International 
 Sales', '---', 'London', 'Manager';
 INSERT INTO #User SELECT 2, 'Jim', 'AMAR', 'USA', 'Sales', 'International Sales', '---', 'New York', 'Manager';
 INSERT INTO #User SELECT 3, 'Sally', 'AMAR', 'USA', 'Sales', 'International Sales', '---', 'Chicago', 'Sr. Manager';
 INSERT INTO #User SELECT 4, 'Molly', 'AMAR', 'USA', 'Sales', 'International Sales', '---', 'New York', 'Manager';
 INSERT INTO #User SELECT 5, 'Gorge', 'AMAR', 'USA', 'Sales', 'International Sales', 'FR relations', 'New York', 'Developer';
 INSERT INTO #User SELECT 6, 'Kramer', 'APAC', 'Singapore', 'Sales', 'International Sales', '---', 'Singapore', 'Manager';

我正在努力获得匹配条件的过滤器培训记录，即下面的示例（对于UserId 2），它应该提供仅与Department和Designation匹配的培训详细信息。 TrainingID 1.但由于OR条件，我得到了3条记录。

 Declare @Department VARCHAR(50),@Division VARCHAR(50), @Designation VARCHAR(50)

 SELECT @Department = Department, @Division = Division,@Designation=Designation from #User where id=2

 SELECT DISTINCT TR.ID
       FROM #Training TR
       LEFT OUTER JOIN #Filter F ON TR.ID = F.Id AND TR.Status = 'Active'
    WHERE 
    (
                (
                    (F.Condition='Department' and F.Parameter = @Department )                       
                )
                OR
                (
                     (F.Condition='Division' and F.Parameter = @Division)   
                )
                OR
                (
                     (F.Condition='Designation' and F.Parameter = @Designation) 
                )
    )

Answer 1

如果您想匹配所有三个，请使用group by和having：

SELECT TR.ID
FROM #Training TR JOIN
     #Filter F
     ON TR.ID = F.Id AND TR.Status = 'Active'
WHERE (F.Condition = 'Department' and F.Parameter = @Department) OR 
      (F.Condition = 'Division' and F.Parameter = @Division) OR
      (F.Condition = 'Designation' and F.Parameter = @Designation) 
GROUP BY TR.ID
HAVING COUNT(DISTINCT F.Condition) = 3;

如果您不希望所有三个匹配，则可以更改HAVING条款。

Answer 2

请使用输出尝试此解决方案..

IWizardDescriptor[] wizards= PlatformUI.getWorkbench().getImportWizardRegistry().getPrimaryWizards();

<强>输出

Declare @Department VARCHAR(50),@Division VARCHAR(50), @Designation VARCHAR(50)
SELECT @Department = Department, @Division = Division,@Designation=Designation from #User where id=2
SELECT *
       FROM #Training TR
       LEFT OUTER JOIN #Filter F ON TR.ID = F.Id AND TR.Status = 'Active'
    WHERE 

           F.Condition = 'Department' AND  F.Parameter = @Department
       OR F.Condition = 'Division' AND F.Parameter = @Division
       OR F.Condition = 'Designation' AND F.Parameter = @Designation

Answer 3

我认为用于加入表格的列有错误，需要在查询中进行一些修复，如下所示

SELECT DISTINCT TR.ID
FROM #Training TR
LEFT OUTER JOIN #Filter F ON TR.ID = F.TrainingId AND
                             TR.Status = 'Active' AND
                            ((F.Condition='Department' and F.Parameter = @Department) OR 
                             (F.Condition='Division' and F.Parameter = @Division) OR
                             (F.Condition='Designation' and F.Parameter = @Designation) )

在SQL中的列上查询多个过滤条件

3 个答案: