Open FS1360472174 opened 7 years ago
https://docs.mongodb.com/v3.2/reference/method/cursor.count/
如果有or,即使条件都能用到index。查询还是很慢很慢
https://docs.mongodb.com/v3.2/reference/method/cursor.count/
如果有or,即使条件都能用到index。查询还是很慢很慢