sql - Within the same group find and exclude records that have the same parent ID for certain types -

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i have table following:

groupid    parentid    type     1         abc       ind    1         abc       ind    1         cde       ord    1         efg       std    2         zzz       ind    2         zzz       ind    2         zzz       ind    3         yyy       cor    3         yyy       cor

i need exclude records in same group, having same parent id , type ind or cor. need keep groups have different parent id , type not ind or cor.

so result want following:

groupid    parentid    type     1         abc       ind    1         abc       ind    1         cde       ord    1         efg       std

somehow thinking use rank () over(partition groupid order parentid), won't give me results want.

any thoughts? ps: table has 5 million+ records. looking effective way deal it.

thanks

the following gives list of groupids want exclude

select groupid (   select groupid,           count(distinct parentid) pcount, count(distinct typecode) tcount,          max(typecode) tcode   tablename   group groupid ) t pcount = 1 , tcount = 1    , (tcode = 'ind' or tcode = 'cor')

now select else

select *  tablename groupid not in (   select groupid     (     select groupid,             count(distinct parentid) pcount, count(distinct typecode) tcount,            max(typecode) tcode     tablename     group groupid   ) t   pcount = 1 , tcount = 1     , (tcode = 'ind' or tcode = 'cor') )

test fiddle --> http://sqlfiddle.com/#!3/f1d4f/15/0


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