Question

Could someone please help me? I am trying to write a SQL query and having trouble with it for 2-3 days. let me define the problem first.

I have 2 tables

1. Payment_Schedule_Master

    [PAYMENT_SCHEDULE_MASTER_ID] [int] NOT NULL, Primary key
    [FPI_ID] [varchar](9) NOT NULL,
    [DELETE_FLAG] [char](1) NOT NULL,
    [CREATED_BY] [varchar](30) NOT NULL,
    [CREATED_DATE] [datetime] NOT NULL,
    [MODIFY_BY] [varchar](30) NOT NULL,
    [MODIFY_DATE] [datetime] NOT NULL

1. Payment_Schedule_Detail

    [PAYMENT_SCHEDULE_DETAIL_ID] [int] IDENTITY(1,1) NOT NULL, Primary key
    [PAYMENT_SCHEDULE_MASTER_ID] [int] NOT NULL, Foreign key to master table
    [PAY_YEAR] [int] NOT NULL,
    [PAY_MONTH] [int] NOT NULL,
    [ACTUAL] [money] NULL,
    [FORECAST] [money] NULL,
    [DELETE_FLAG] [char](1) NOT NULL,
    [CREATED_BY] [varchar](30) NOT NULL,
    [CREATED_DATE] [datetime] NOT NULL,
    [MODIFY_BY] [varchar](30) NOT NULL,
    [MODIFY_DATE] [datetime] NOT NULL

There is a one-to-many relationship between the two: Master has one entry and detail has many. Payment_Schedule_Detail has an id, foreign key, actual, forecast and many column. Actual and forecast will have numerical values in it.

Problem:
I want to get those Payment_Schedule_Master rows which have Actual and ForeCast equal to 0.

My Query:

I tried this query

Select 
   t.PAYMENT_SCHEDULE_MASTER_ID, psm.FPI_ID, 
   t.ActualSum, t.ForecastSum
from 
    (Select 
        SUM(Actual) As ActualSum, 
        SUM (forecast) AS ForecastSum, 
        PAYMENT_SCHEDULE_MASTER_ID
     from 
        [dbo].[PAYMENT_SCHEDULE_DETAIL]
     group by 
        PAYMENT_SCHEDULE_MASTER_ID) t
Inner Join 
    dbo.PAYMENT_SCHEDULE_MASTER psm on psm.PAYMENT_SCHEDULE_MASTER_ID = t.PAYMENT_SCHEDULE_MASTER_ID
where  
    t.ActualSum = t.ForecastSum
and t.ActualSum = 0

The problem with this query is that if Actual has 200 in Jan and -200 in Dec it will pick that title as well because SUM (Actual) will be 0 which is wrong.

I am not sure how to modify the query that it should only get those titles which has actual 0 and forecast 0.

Testing:
and also if anyone will let me know how to test the method?

Update: tried this query but it is taking 8 seconds.

Select 
    t.PAYMENT_SCHEDULE_MASTER_ID, psm.FPI_ID, 
    t.ActualSum, t.ForecastSum, psd.ACTUAL, psd.FORECAST
from 
    (Select 
         SUM(Actual) As ActualSum, SUM (forecast) AS ForecastSum, 
         PAYMENT_SCHEDULE_MASTER_ID
     from 
          [dbo].[PAYMENT_SCHEDULE_DETAIL]
     group by 
          PAYMENT_SCHEDULE_MASTER_ID) t
Inner Join 
     dbo.PAYMENT_SCHEDULE_MASTER psm on psm.PAYMENT_SCHEDULE_MASTER_ID = t.PAYMENT_SCHEDULE_MASTER_ID
Inner Join 
     [dbo].[PAYMENT_SCHEDULE_DETAIL] psd on psm.PAYMENT_SCHEDULE_MASTER_ID = psd.PAYMENT_SCHEDULE_MASTER_ID
 where  
     t.ActualSum = t.ForecastSum
     and t.ActualSum = 0
     and psd.ACTUAL = 0 
order by 
     psm.FPI_ID

Data And Output:

psm_id  Actual      ForeCast  [other columns]
900     10000.00    0.00
900     -10000.00   0.00
900     0.00        0.00
912     0.00        0.00
912     0.00        0.00
912     0.00        0.00

psm_id = Payment_Schedule_Master_ID

Payment_Schedule_Master_Id 900 Sum of actual will be 0, It should not appear on the result. but 912 will appear in the result because all records were 0. I hope this helps.

Answer 1

thank you for the answers but it was not working at all.

In my database there was one special case which I didnt see. It was that if both actual and forecast is 0 for a specific Payment_Schedule_Id it will have only one row.

Select PAYMENT_SCHEDULE_MASTER_ID from (
Select COUNT(*)  As IdCount, PAYMENT_SCHEDULE_MASTER_ID, ACTUAL , FORECAST
from PAYMENT_SCHEDULE_DETAIL
group by PAYMENT_SCHEDULE_MASTER_ID, ACTUAL, FORECAST) t
where t.IdCount = 1 
and t.ACTUAL = 0.00
and t.FORECAST = 0.00

Above was the solution.