sql - SQLiteman help needed -


hi need uni assignment, need answer 2 questions: 1) list titles of videos available in more 1 format number of different formats available each title.

my query was:

select title video video_id in (     select video_id, count(format_id) avaliableformats     video_format     group title     having count(format_id) > 1);

but result says "query error: single result allowed select part of expression"- i'm not sure means or need fix it?

q 2 5) list titles of videos have average cost (across formats) more $2.

my query

select title video video_id in (     select video_id     video_format    group title having avg(cost) > 2);

but brings 1 result (row there should 2).

if can please really appreciate it!

the first is:

    select title video video_id in ( select video_id   video_format group title having count(format_id) > 1)

if using in 1 column can inside inner query otherwise use exist

the 2nd:

    select title video video_id in  ( select video_id video_format     group video_in having avg(cost) > 2)

if understood correctly , video in relates title 1 one, made bit mess group by.


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