need help with Triggers - Mailing list pgsql-general

          Can you please share your thoughts and help me ?

         1.  I have 4 ( T1, T2 , T3, T4 ) tables where I have the data from a transactional system

         2.  I have created one more table D1  to denormalize the data from the 4 tables ( T1, T2 , T3, T4  )

         3. I have created function that returns trigger (TGR_1) . 

         4. I have create one trigger ( TGR_1) after insert or update on T1 & T2.

         5. Now when I insert data from the application, the save function will write data to T1 & T2. 

  

         6. The problem is the table D1 gets 2 rows, One with correct data and the other is Blank row.  I am not able to understand why I am getting a blank row. 

Any thoughts on this? Appreciate your help

Regards