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移除书签Logical Query Operators
Note
For details on specific operator, including syntax and examples,click on the specific operator to go to its reference page.
| Name | Description |
|---|---|
$and | Joins query clauses with a logical AND returns all documents that match the conditions of both clauses. |
$not | Inverts the effect of a query expression and returns documents that do not match the query expression. |
$nor | Joins query clauses with a logical NOR returns all documents that fail to match both clauses. |
$or | Joins query clauses with a logical OR returns all documents that match the conditions of either clause. |
