>Hi,
>
>What is a better practice and more efficient when using a derived table in a SQL Select:
>
>
>select Table1.* T1 where exists (select * from Table2 T2 where T1.pk_fld = T2.pk_fld and T2.fld2 = '123')
>
>
>vs
>
>
>select Table1.* T1 where T1.pk_fld in (select pk_fld from Table2 T2 where T1.pk_fld = T2.pk_fld and T2.fld2 = '123')
>
>
>TIA
I prefer:
select Table1.*
FROM Table1
INNER JOIN Table2 ON Table1.pk_fld = Table2.pk_fld and Table1.fld2 = '123'
Against Stupidity the Gods themselves Contend in Vain - Johann Christoph Friedrich von Schiller
The only thing normal about database guys is their tables.
