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Need a Better way for postgreSOL Triggers

Michael Crowley
Greenhorn

Joined: Oct 07, 2004
Posts: 10
Hi there
I am learning triggers in postgres, currently I have something similar to


I want to get rid of procduure and procedure call (for efficiency) Is there any way to write a trigger in postgreSOL similar to

Tim Holloway
Saloon Keeper

Joined: Jun 25, 2001
Posts: 16305
    
  21

Actually, you'd be better off asking on the PostgreSQL site about stuff like that.

However, IIRC, PostgresSQL triggers do have to be in the form of a function.

Don't assume that function == inefficient. First of all, most modern-day language implementations do significant optimizations. Secondly, proportionally, the overhead of a stock function call to straightline code is a miniscule fraction of what it was 30 years ago. <advice>NEVER "KNOW" where ineficiency is. You'll be wrong. MEASURE it.</advice>

Finally, realize that database operations are thousands of times slower than program operations. So the time taken for the trigger to to its cascade delete (as you seem to be showing) or do foreign key operations or whatever is far more significant the overhead of a function call.


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