Tag Archives: exist

In Exist KARSILASTIRLMASI

select * from T1 where x in ( select y from T2 )çalışması:select * from t1, ( select distinct y from t2 ) t2where t1.x = t2.y;Subquery sonucta, distinct, ve indexli (hashed veya sorted) ve join yapmısoriginal tabloyla.Tersi iseselect * … Continue reading

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