Perform index analysis to make sure that the right indexes exist to help avoid unnecessary table scans.

执行索引分析，确保索引正确，从而能避免不必要的表扫描。

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Creating indexes helps avoid unnecessary table scans and sorts, speeds up frequently executed queries, and ensures uniqueness.

索引的创建有助于避免对表进行不必要的扫描和排序，加速频繁执行的查询以及确保惟一性。

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