{CodeRoyale}
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Multiple ChoiceIntermediate 30s

Query Optimization

Choose the best answer for: database performance
Options
  1. 1Use indexes, avoid SELECT *, use EXPLAIN to analyze queries
  2. 2EXPLAIN executes the query and returns the result rows
  3. 3SELECT * is best practice for keeping queries simple
  4. 4Indexes don't help since the optimizer scans anyway
backendintermediate

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