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The index candidates are either generated with the Advise Index function or manually created by the User-Defined Index function. To evaluate the impact of the index candidates on the SQL statement, the query plan is needed. You can obtain the query plans for all the index candidates by using the Batch Show Plan.
Note: The indexes are physically created on the database, the query plan is retrieved, and then the indexes are dropped. This process may affect other SQL statements executing on the database during this period.