Hi,
On 08.03.2004, at 02:29, Christopher Kings-Lynne wrote:
explain analyze select
((t0.int_value-t1.int_value)*(t0.int_value-t1.int_value))
from job_property t0, job_property t1
where t0.id_job_profile = 5
and t1.id_job_profile = 6
and t1.id_job_attribute = t0.id_job_attribute
and t1.int_value
Don't bother with C function, use SQL function instead. You could get
a 50% speedup.
Is this always the case when using SQL instead of the C API to get
values or only the function 'call' itself? We are thinking to use C
functions which are optimized for the G5 altivec unit.
SQL functions are
David Teran [EMAIL PROTECTED] writes:
Merge Join (cost=5369.08..5383.14 rows=150 width=4) (actual
time=2.527..2.874 rows=43 loops=1)
Merge Cond: (outer.id_job_attribute = inner.id_job_attribute)
Join Filter: (inner.int_value outer.int_value)
- Sort (cost=2684.54..2686.37
Hi,
we need to optimize / speed up a simple select:
explain analyze select
((t0.int_value-t1.int_value)*(t0.int_value-t1.int_value))
from job_property t0, job_property t1
where t0.id_job_profile = 5
and t1.id_job_profile = 6
and t1.id_job_attribute = t0.id_job_attribute
and t1.int_value
explain analyze select
((t0.int_value-t1.int_value)*(t0.int_value-t1.int_value))
from job_property t0, job_property t1
where t0.id_job_profile = 5
and t1.id_job_profile = 6
and t1.id_job_attribute = t0.id_job_attribute
and t1.int_value t0.int_value;
Don't bother with C function, use SQL function
