how can I check the error status??

Hi everybody!

 

I'm migrating some sybase store procedures to postgres functions,

I almost have found all that I need, however I dont know how to check the error status of the last transaction.

I need to find in postgres the equivalent to the sybase @@error global variable.

 

I mean, how can I translate this code in a postgres function?:

 

insert into table (a,b,c) values (1,2,3)

 if (@@error =0)

  return 0

 else

  return -900

 

 

Any advices?

 

thanks in advance!

 

Luis Paz.

--
paz, amor y comprensión
        (1967-1994)