What Is Explain Plan In Sql Developer
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What Is Explain Plan In Sql Developer
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How To Generate Explain Plan In SQL Developer Catgovind How To Plan
Prerequisites To issue an EXPLAIN PLAN statement you must have the privileges necessary to insert rows into an existing output table that you specify to hold the execution plan You must also have the privileges necessary to execute the SQL statement for which you are determining the execution plan When you send a query to the database, it's the job of the SQL optimizer to figure out how to execute it, and that process creates the query's execution plan. The plan is the driving directions for your query, but instead of telling you which roads to take and when to turn, it lists how to access your tables and in what order.
Understanding Explain Plan In Oracle Reading With Example
What Is Explain Plan In Sql DeveloperAn execution plan is the sequence of operations that the database performs to run a SQL statement. 6.1.1 Contents of an Execution Plan The execution plan operation alone cannot differentiate between well-tuned statements and those that perform suboptimally. The plan consists of a series of steps. An Execution Plan sometimes called an Explain Plan is a list of steps that the database will take to run your query and give you the results you need It shows what kind of operations the database will perform and some other statistics such as cardinality and cost which we ll get into later
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