select a.col1,b.col2,c.col3 from tab1 a,tab2 b,tab3 c where a.pk=b.fk and b.pk=c.fk and c.col4='hello';
If col4 value 'hello' of tab3 is search origin, should it come first of where or last. Does the order of selected items or where condition items affect the performance. We can have joins without relationship just to meet our requirement. In this case am I correct that the column in relation chain = not related column in where clause and not the other way round --- sesh2002
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How to Unravel a Tricky Query
If you browse through the Oracle zones or any of the other database-related zones you'll come across some complicated solutions and sometimes you'll just have to wonder how anyone came up with them. …