From: Beatrice Yueksel <beatrice@msys.ch>
To: pgsql-sql@postgresql.org
Subject: Problem with timestamp
Date: Wed, 11 Dec 2002 11:42:12 +0100
Message-ID: <3DF71684.5080208@msys.ch> (raw)
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 the interval.
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 into t2 now();
t3 := t2 - t1;
RAISE NOTICE '' from % to % = %'',t2,t1,t3;
return t3;
end;
' language 'plpgsql';
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To: pgsql-sql@postgresql.org
Cc: beatrice@msys.ch
Subject: Re: Problem with timestamp
In-Reply-To: <3DF71684.5080208@msys.ch>
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