Hello, I have a fairly simple query im trying to do, but im getting the syntax wrong somewhere. Basically I have this query which would yield the following.:
select distinct sector from sym.symbol order by 1
Energy
Materials
Technology etc....
now what I want to do is get the top 5 symbols from my database for each of these topics and my first attempt was to do this but it is not working, and Im guessing I need a FOR or WHILE loop...
Here is the query that will get what I want if I manually type in each sector.
select t.symbol, sum(vol ) from xxxx.trade t, sym.symbol s where trunc(trade_time) > trunc(sysdate)
and t.symbol=s.symbol and nvl(s.test_symbol,0)<>1
and s.sector = 'Materials'
group by t.symbol order by 2 DESC
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Hi Extreme66,
Here's a solution using analytics
SELECT *
FROM (SELECT s.sector, t.symbol, totvol,
DENSE_RANK () OVER (PARTITION BY s.sector ORDER BY totvol DESC)
drank
FROM (SELECT s.sector, t.symbol, SUM (vol) totvol
FROM xxxx.trade t, sym.symbol s
WHERE TRUNC (trade_time) > TRUNC (SYSDATE)
AND t.symbol = s.symbol
AND NVL (s.test_symbol, 0) <> 1
GROUP BY s.sector, t.symbol))
WHERE drank <= 5
Cheers,
NicksonKoh
Business Accounts
Answer for Membership
by: jinesh_kamdarPosted on 2007-10-05 at 09:19:28ID: 20023105
select * from
(select t.symbol, sum(vol) from xxxx.trade t, sym.symbol s where trunc(trade_time) > trunc(sysdate)
and t.symbol=s.symbol and nvl(s.test_symbol,0)<>1
and s.sector = 'Materials'
group by t.symbol order by 2 DESC)
where rownum <= 5;