Getting an error -from keyword not found where needed.

Question

plzz reaply asap!!!
what is wrong with the query???
SELECT
aaa.user_id
aaa.ispeak,
SUM (round(aaa.aduration_seconds/decode(aaa.ispeak,0,offpeakpulse,peakpulse))*decode(ispeak,0,offpeakpulse,peakpulse)) DURATION,
srt.circle,
srt.package_id ,
srt.peak_rate ,
srt.offpeak_rate ,
srt.bst_plantype ,
srt.free_value ,
srt.peak_pulse ,
srt.offpeak_pulse ,
srt.pulse_unit ,
srt.rating_unit
FROM aaa_sessions aaa, subscriber_rate_tab srt
WHERE aaa.user_id = srt.externalid(+)
AND (aaa.start_time_utc between srt.activedt and srt.inactivedt)
AND (aaa.end_time_utc between srt.activedt and srt.inactivedt);

Answer 1

That's why formatting is important, you missed comma in the very first line. aaa.user_id. Always try to write formatted code, for example:
SELECT aaa.user_id,
       aaa.ispeak,
       SUM(round(aaa.aduration_seconds /
                 decode(aaa.ispeak, 0, offpeakpulse, peakpulse)) *
           decode(ispeak, 0, offpeakpulse, peakpulse)) DURATION,
       srt.circle,
       srt.package_id,
       srt.peak_rate,
       srt.offpeak_rate,
       srt.bst_plantype,
       srt.free_value,
       srt.peak_pulse,
       srt.offpeak_pulse,
       srt.pulse_unit,
       srt.rating_unit
  FROM aaa_sessions aaa, subscriber_rate_tab srt
WHERE aaa.user_id = srt.externalid(+)
   AND (aaa.start_time_utc between srt.activedt and srt.inactivedt)
   AND (aaa.end_time_utc between srt.activedt and srt.inactivedt);Now there is another thing about you group function SUM. But I am leaving that up to you sort it out.