sql - JOIN inside WHERE vs outside WHERE -

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will both statements return same results?

the top code has join in clause , takes on 4 hrs run. moving join outside same query runs in 1m 6s. have not seen join in clause.

note dsa.doc_id child version record of orders.folder.

    --old code taking 4+ hrs run     select top 1 status_to_date     dsa     (status_to = 'ca')      , left(dsa.doc_id,12) = orders.folder        --new code taking less minute     select top 1 status_to_date     dsa     left outer join orders          on left(dsa.doc_id,12) = orders.folder      (status_to = 'ca')

yes believe both queries give same result. , in side join gives slowest result. there 1 more alternate of above query willl nmore , more faster second query too

select       top (1) status_to_date       dsa       (status_to = 'ca')     ,  (select count(*) orders orders.folder =  left(dsa.doc_id,12)) > 0

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