what is different between inline query,subquery& corelated
query?

Answer Posted / sharath

Sorry the query posted above is not the one. Please see the
below query.

Can we use one subquery in another. I have got a situation
like this


select

(select date from t1 where t1.col1=table.col1) date,
((select date from t1 where t1.col1=table.col1)*7) week,
(((select date from t1 where t1.col1=table.col1)*7)
+start_date) transfer

from table;

Somewhat like this.
The point is the first subquery is used in second,
third,fourth subqueries. Instead of writing them again, can
we avoid them.

I needed to know whether the first
subquery can be used in the second subquery and the next
subqueries??Or any hints as such just to make the query
faster??

Is This Answer Correct ?    3 Yes 7 No



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