Select query problem in JDBC sender adapter

Question

Hello Experts,
We have a problem with PI sender adapter that PI has started to miss records in database some database records are missing and we are using the below selet query :
SELECT * FROM [database name].[dbo].[Material_Movement] WHERE [Process_Order_Number] = (Select TOP 1 [Process_Order_Number] FROM [database name].[dbo].[Material_Movement] WHERE ([PI_Read_Date] IS NULL AND [Movement_Type] = (SELECT TOP 1 [Movement_Type] FROM [database name].[dbo].[Material_Movement] WHERE [Transaction_Code] = 'xyz' AND [PI_Read_Date] IS NULL ORDER BY Created_Date ASC))) AND [Transaction_Code] = 'xyz' AND [Movement_Type] = (SELECT TOP 1 [Movement_Type] FROM [database name].[dbo].[Material_Movement] WHERE [Transaction_Code] = 'xyz' AND [PI_Read_Date] IS NULL ORDER BY Created_Date ASC) AND [PI_Read_Date] IS NULL ORDER BY [Transaction_ID] ASC
I am weak in select query could you please check and suggest how the query can be modified to avoid this issue .
Thanks,
Somenath

Answer 1

Hi ,
After looking into These Query .. I found ...
Your Query Will run such Kind of scenario ..
1.)   Movement Type will be fetched from from below Query
        SELECT TOP 1 Movement_Type
        FROM database name.dbo.Material_Movement
        WHERE Transaction_Code = 'xyz'
       AND PI_Read_Date IS NULL
        ORDER BY Created_Date ASC
2.) on the  basis of abovr fetched  moment code . your Query will fetch 1 Process Order number
Select TOP 1 Process_Order_Number
FROM database name.dbo.Material_Movement
WHERE ( PI_Read_Date IS NULL
              AND Movement_Type =  Moment Type will be same as 1.
3.)
After  Getting 1 and 2 . Query will fetch Data  from table " dbo.Material_Movement "
On the basis of ..
Movement_Type = value from 1.
Process_order_type = value from 2.
Transaction_Code = 'xyz'
ORDER BY Transaction_ID ASC
So check Missed record Fullfill this Condition or not ....................
If not ... You will get why they are not picked by your given Query ...........
Hope it helps ..
regards
Prabhat Sharma.