Is it possible in single select that much?

Question

hi, I have the following setup:
T1:=====
xdate date,
xamt number, --accumultive number each day from 00:00:00
xresp number --accumultive from 00:00:00
and I need to get some statististics for each product for 30 min interval ( any 30 min within each hour) counting number for xamt (it's commultive so I need first use LAG first, I think) and average response time xresp for that selection.
and then put all result in table TR3.
What I thinking:
A.
select xdate , xamt - LAG(xamt, 1, 0) OVER (ORDER BY xdate) as amt, xresp - LAG(xresp, 1, 0) OVER (ORDER BY xdate) as resp; -- to get delta for xamt and xresp.
B. store output of A into GTT.T2;
C. and do main calculation here, but I'm not sure how to deal with selection of that 30min interval within each hour? I will put all his in proc, so probably I can do LOOP?
for INT in 0..23
LOOP
date_ch1:= to_char(to_date(TRIM(SYSDATE), 'dd-mon-yyyy'))||' '|| lpad(INT,2,0)||':00:00'; /* -- I can use dbms_random.random for random selection within 0-60 min.
date2:= to_date(date_ch1) + 30/1440;
insert into TR3 (
SELECT '00:00:00' , count (amt), /*--resp/count(amt)  for average response time,
from GTT.T2
where xdate between (to_date(date_ch1) and date2);
END LOOP;
I feel I can use OVER PARTITION somehow to make easier, but bit confused, as well how to get average resp time.
Appreciate you hints.
Best
T

Answer 1

The query I have provided earlier needs to be set in the ItemCode field at the row level and not on your User field at the header.
The query below (same as earlier with the addition of the user field name - please verify) will show the Child Items of the BOM item who code you have entered at the Header level in your UDF.
SELECT T0.Code FROM [dbo\].[ITT1\] T0 WHERE T0.Father = $\[OPOR.U_BOMNAME]
This will not automatically fire but the user has to first enter the Vendor Code and then enter the U_BOMName and then in the Item code field press Shift+F2 which will fire the above query FMS displaying the child Items for this BOM.
Suda