Hello,
I try to check the time needed by a function.
I would like to :. select current_timestamp,. execute 5000 times a function. select the current_timestamp and return
theinterval.
Problem : the interval is always '00:00', the two timestamps have always
the same value.
Could you help me ? have you any suggestions for testing sql functions
speed?
Thank you in advance,
Béatrice
create function test_function() returns interval
as '
declare j integer; t1 timestamp; t2 timestamp; t3 interval; x integer;
begin select into t1 now(); FOR j in 0..5000 loop select into x get_function_to_test(); end loop; select
intot2 now(); t3 := t2 - t1; RAISE NOTICE '' from % to % = %'',t2,t1,t3; return t3;
end;
' language 'plpgsql';
