sql server 2008 - Calculate number of grouped rows in SQL -



sql server 2008 - Calculate number of grouped rows in SQL -

i have 2 tables, requests , responses

requests:

requestid userid insertdate 1 1 5/4/2013 2 2 6/4/2012 . . . . . .

responses:

responseid requestid(fk) responsecode 1 1 2 1 v 3 1 m 4 2 5 2 s 6 2 d . . . . . .

request considered "passed" if response codes , d received (like request id 2 in example). want write sql queries homecoming 3 things:

number of "passed" requests requestids of requests pass requestids of requests didn't pass

i wrote don't , suppose there improve way. query is:

select count(*) ( select count(*) c, req.requestid responses res inner bring together requests req on req.requestid = res.requestid res.responsecode = 'a' or res.responsecode = 'd' grouping req.requestid )cc c = 2

thanks in advance.

pass

select r1.requestid responses r1 bring together responses r2 on r2.requestid = r1.requestid , r1.responsecode = 'a' , r2.responsecode = 'd' compute count(r1.requestid)

(not positive on compute syntax)

not pass

select distinct (r1.requestid) responses r1 total outter bring together responses r2 on r2.requestid = r1.requestid , r1.responsecode = 'a' , r2.responsecode = 'd' r2.requestid null or r1.requestid null

pass

select r1.requestid responses r1 r1.responsecode = 'a' intersect select r1.requestid responses r1 r1.responsecode = 'd'

not pass

select r1.requestid responses r1 except select r1.requestid responses r1 r1.responsecode = 'd' or r1.responsecode = 'a'

sql sql-server-2008 tsql count group-by

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