LIKE模糊查询userName包含A字母的数据(%A%)

SQL:

SELECT * FROM UserInfo WHERE userName LIKE "%A%"

MongoDB:

db.UserInfo.find({userName :/A/})

LIKE模糊查询userName以字母A开头的数据(A%)

SQL:

SELECT * FROM UserInfo WHERE userName LIKE "A%"

MongoDB:

db.UserInfo.find({userName :/^A/})