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Multiple ChoiceIntermediate 30s

N+1 query problem

Choose the best answer for: ORM performance issue
Options
  1. 1Having too many columns in a wide table that bloat every SELECT
  2. 2Running only one query so the database cannot parallelize the work
  3. 3Loading list then querying related items individually
  4. 4It is not a real problem and the ORM always batches these calls

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