See this about adding
LIMIT 1The question of whether it will be faster,http://segmentfault.com/q/10100000001 …
The old cow reminds me of mongodb
I don’t know if it is the same as SQL, or if it is the same as SQL.
The limit () function in mongoDB is the same as the limit in sql. The limit () function in mango is also used after the find () function.