Q. Aggregation expressions use ______ path to access fields in the input documents.

View solution

Q. Which of the following statement is equivalent to “$$CURRENT.<field>”?

View solution

Q. Point out the wrong statement.

View solution

Q. ______ binds variables for use in the specified expression.

View solution

Q. ________ applies an expression to each item in an array and returns an array with the applied results.

View solution

Q. In the vars assignment block, ________ refers to the value of an externally defined variable low.

View solution

Q. To avoid treating numeric or boolean literals as projection flags, use the _______ expression to wrap the numeric or boolean literals.

View solution

Q. MongoDB treats the literals as projection flags, valid only in the _______ stage.

View solution

Q. ______ expressions ignores the duplicate entries in each input array and the order of the elements.

View solution

Q. Point out the correct statement.

View solution

Q. ________ returns true if the input sets have the same distinct elements.

View solution

Q. Which of the following accepts any number of argument expression?

View solution

Q. Point out the wrong statement.

View solution

Q. ________ returns a set with elements that appear in any of the input sets.

View solution

Q. Which of the following performs a relative complement of the second set relative to the first?

View solution

Q. $setIsSubset returns _______ if all elements of the first set appear in the second set, including when the first set equals the second set.

View solution

Q. _______ accepts only single argument expression.

View solution

Q. $allElementsTrue returns true if no element of a set evaluates to ____________

View solution

Q. Comparison expressions return a boolean except for ________ which returns a number.

View solution

Q. Point out the correct statement.

View solution