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JDBC and Relational Databases
Inner Query Execution
Joined: Jul 18, 2012
Jun 17, 2014 21:08:23
select :name from (select empName from Employee);
Suppose the Inner query (select empName from Employee) gives one name 'XYZ'.
And as we know the Inner query and sub query execute first then why we not write directly
select :name from XYZ inplace of writing select :name from (select empName from Employee);
author & internet detective
Joined: May 26, 2003
Jun 20, 2014 21:09:08
In this case you would. Inner queries should only be used when they are performing a task that can't be accomplished with a regular simple query.
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