Explanation:For each input document, outputs either one document (for the first n documents) or zero documents (after the first n documents). 5. Point out the wrong statement :
A. Some pipeline stages may generate new documents or filter out documents
B. $limit groups output documents by a specified operator
C. $group groups input documents by a specified identifier expression
D. None of the mentioned
Answer:A
Explanation:For each input document, outputs either one document (for the first n documents) or zero documents (after the first n documents). 5. Point out the wrong statement :
A. Some pipeline stages may generate new documents or filter out documents B. $limit groups output documents by a specified operator C. $group groups input documents by a specified identifier expression D. None of the mentioned
Explanation:$group consumes all input documents and outputs one document per each distinct group. 6. _______ reorders the document stream by a specified sort key