Explanation:You cannot combine the $text query, which requires a special text index, with a query operator that requires a different type of special index. 7. The default name for the index consists of each indexed field name concatenated with _______.
A. _char
B. _textc
C. _text
D. All of the mentioned
Answer:A
Explanation:You cannot combine the $text query, which requires a special text index, with a query operator that requires a different type of special index. 7. The default name for the index consists of each indexed field name concatenated with _______.
A. _char B. _textc C. _text D. All of the mentioned