SERVER-6542 query optimizer does not consider query plans for $and:[$or:[conditions]]

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• Closed

SERVER-5338 Strange results with identical but differently structured queries

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• Closed

SERVER-9180 Nested $or queries seem to not use indexes efficiently

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• Closed

SERVER-3192 allow nesting $or within $and

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• Closed

SERVER-8790 Introduce composable "stages" in query execution

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• Closed