getPlansByQuery( <query>, <projection>, <sort> )
Displays the cached query plans for the specified query shape.
The query optimizer only caches the plans for those query shapes that can have more than one viable plan.
The method is only available from the
plan cache objectof a specific collection; i.e.
PlanCache.getPlansByQuery()method accepts the following parameters:
Parameter Type Description
document The query predicate of the query shape. Only the structure of the predicate, including the field names, are significant to the shape; the values in the query predicate are insignificant.
document Optional. The projection associated with the query shape. Required if specifying the
document Optional. The sort associated with the query shape. Returns: Array of cached query plans for a query shape.
To see the query shapes for which cached query plans exist, use the