Question

I have the following table, where I need to update the Check_Status from Completed to ‘Not Completed’ for Greatest Transaction_ID of Specific Prod_ID:

Tran_ID     Prod_ID    Check_Status
-------     --------   ------------
107893      XA         Completed
107892      XA         Completed
107891      XA         Completed
107890      XB         Completed
107889      XB         Completed
107888      YC         Completed
107887      YC         Completed
107886      YC         Completed
107885      YC         Completed

My results should be displayed as following i.e., product id XA has the greatest Trans Id as 107893, should be updated as ‘Not-Completed’. Remaining things should be unchanged. Similarly for other Product Id XB and XC.

Tran_ID    Prod_ID     Check_Status
-------    --------    ------------
107893     XA          Not-Completed
107892     XA          Completed
107891     XA          Completed
107890     XB          Not-Completed
107889     XB          Completed
107888     YC          Not-Completed
107887     YC          Completed
107886     YC          Completed
107885     YC          Completed

Answer 1

     UPDATE Transactions set 
    Check_Status= 'Not completed' 
     where Tran_ID IN (
        Select MAX(Tran_ID) as Tran_ID from 
Transactions Group by Prod_ID)