What is EXPLAIN PLAN statement?

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What is EXPLAIN PLAN statement?

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The EXPLAIN PLAN statement is used for displaying execution plans selected by the optimizer for various Data Markup Language (DML) statements. The results from executing the EXPLAIN PLAN statement can be used for determining the logic of the optimizer in choosing a particular plan. The results of EXPLAIN PLAN can also be used for analyzing the performance of a query and the logic of the optimizer in choosing a particular data structure while executing a query.


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