Question

我会尽力解释，但如果不清楚，请告诉我。英语不是我的第一语言。

我需要一些查询帮助，作为插入记录集的条件。

首先，我有一个db表EmployeeProviders。

在其中一个存储过程中，我根据某些条件重新计算学分。在这种情况下，记录的数量设置为3，但可以更多或更少。

如果在重新计算后，我获得与EmployeeProviders中生效日期相同的数字或信用，我不需要插入这些值。 EmployeeProviders可能包含按生效日期分隔的每个员工的几组记录。

对我来说，困难在于构建一个查询，它将逐个检查记录，但在这种情况下以三个为一组。如果其中一条记录不匹配，我需要插入所有三条记录。如果所有这些都相同，我不会插入任何记录。

declare @StartDate datetime, @employee_id int
select @StartDate = '2013-07-01', @employee_id = 3465

例如，这里是填充了值

的db表

    DECLARE @EmployeeProviders TABLE (
    ident_id int IDENTITY,
                employee_id int,
    id int, 
    plan_id int, 
    credits decimal(18,5),
    effective_date datetime                     
)

INSERT INTO @EmployeeProviders (employee_id, plan_id, id, credits, effective_date)
VALUES (18753, 23, 0.00000, '2013-06-01')

INSERT INTO @EmployeeProviders (employee_id, plan_id, id, credits, effective_date)
VALUES (3465, 18753, 15, 0.00000, '2013-06-01')

INSERT INTO @EmployeeProviders (employee_id, plan_id, id, credits, effective_date)
VALUES (3465, 18753, 16, 60.00, '2013-06-01')

INSERT INTO @EmployeeProviders (employee_id, plan_id, id, credits, effective_date)
VALUES (3465, 18753, 23, 0.00000, '2013-07-01')

INSERT INTO @EmployeeProviders (employee_id, plan_id, id, credits, effective_date)
VALUES (3465, 18753, 15, 0.00000, '2013-07-01')

INSERT INTO @EmployeeProviders (employee_id, plan_id, id, credits, effective_date)
VALUES (3465, 18753, 16, 81.580, '2013-07-01')

SELECT * FROM @EmployeeProviders WHERE plan_id = 18753 and datediff(dd,effective_date,@StartDate) = 0

这是存储过程中的临时表。它在caclulation过程中得到更新

DECLARE @Providers TABLE (
    id int, 
    plan_id int, 
    credits decimal(18,5)                           
)

INSERT INTO @Providers (plan_id, id, credits)
VALUES (18753, 23, 0.00000)

INSERT INTO @Providers (plan_id, id, credits)
VALUES (18753, 15, 0.00000)

INSERT INTO @Providers (plan_id, id, credits)
VALUES (18753, 16, 81.580)

SELECT * FROM @Providers

此临时表中的所有更新金额与db表EmployeeProviders中的金额相同，因此，我不需要插入新的记录集我怎么能做一个可以像这样的条件的查询如果不是EXISTS（）或者只是做 INSERT EmployeeProviders（）...... SELECT ... FROM @Providers ,,, - 如果值与EmployeeProviders中的值不同，将返回3条记录的查询

另一种情况，@ Providers.credits = 65所以，因为与EmployeeProviders.credits相比，对于id = 16，金额被更改了。我将向EmployeeProvider表添加新的3条记录

    DECLARE @Providers TABLE (
    id int, 
    plan_id int, 
    credits decimal(18,5)                           
)

INSERT INTO @Providers (plan_id, id, credits)
VALUES (18753, 23, 0.00000)

INSERT INTO @Providers (plan_id, id, credits)
VALUES (18753, 15, 0.00000)

INSERT INTO @Providers (plan_id, id, credits)
VALUES (18753, 16, 65.00)

SELECT * FROM @Providers

提前谢谢你，

麦

Answer 1

如果我正确理解您的问题，您的问题可以通过以Except

的结果为条件来解决

if exists(
select ID, plan_id , credits from @Providers
except
SELECT id, plan_id, credits FROM @EmployeeProviders WHERE plan_id = 18753 and   datediff(dd,effective_date,@StartDate) = 0
)

Answer 2

我会捅它。在存储过程中尝试这个：

if (EXISTS(select 3465,pr.plan_id,pr.id,epr.credits,effective_date from
   providers pr left join @EmployeeProviders epr on
   pr.id = epr.id and pr.plan_id = epr.plan_id and pr.credits = epr.credits and    effective_date = '2013-07-01'
   where epr.credits is NULL ))
 INSERT INTO @EmployeeProviders (employee_id, plan_id, id, credits, effective_date)
 select 3463,plan_id,id,credits,'2013-07-01' from @Providers

在action

中查看

Answer 3

使用类似以下查询的内容。我把它概括为你。核实。

WITH TEMP 
AS
(
SELECT A.employee_id, A.plan_id, A.id, A.credits, A.effective_date,CASE WHEN A.CREDITS = B.CREDITS THEN    1 ELSE 0 END AS SAME
FROM @EmployeeProviders as A INNER JOIN @Providers as B ON A.ID = B.ID AND 
A.PLAN_ID = B.PLAN_ID AND A.effective_date = '2013-07-01'
)

SELECT *
FROM TEMP AS A INNER JOIN 
(SELECT EMPLOYEE_ID , PLAN_ID , SUM(SAME) AS TOTAL , COUNT(*) AS CNT FROM TEMP GROUP BY EMPLOYEE_ID ,   PLAN_ID ) AS B  
ON A.EMPLOYEE_ID = B.EMPLOYEE_ID AND A.PLAN_ID = B.PLAN_ID
WHERE B.TOTAL != B.CNT

构造查询作为插入记录集的条件

3 个答案: