Tag: Join
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yield() method Theoretically, to ‘yield’ means to let go, to give up, to surrender. A yielding thread tells the virtual machine that it’s willing to let other threads be scheduled in its place. This indicates that it’s not doing something too critical. Note that it’s only a hint, though, and not guaranteed to have any effect at…
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Self Join: By definition, a self join query is a query in which the table is joined to itself. Self joins are written in cases where there is parent child relationships in the data. Let’s take the classic example of employees table. We have to write a self join query to find out the immediate…