Ehab Galal wrote:
> I created a CMD_UTILITY, which upon being executed by the user should do 
> the following atomically:
> 1- drops a table
> 2- deletes from another table all rows with a certain criterion: "DELETE 
> FROM pg_t1 WHERE att = val"
> 3- deletes from a third table all rows with a certain criterion: "DELETE 
> FROM pg_t2 WHERE att = val"
> I do the first step using ProcessUtility(). How can i do the 2nd/3rd steps? 
> Any suggestions?

Don't do that.  Instead, use performDeletion and register your tuples in
the pg_t1 and pg_t2 catalogs in pg_depend (using recordDependencyOn).

Alvaro Herrera                      
The PostgreSQL Company - Command Prompt, Inc.

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