Combining $regex and $or operators in Mongo

Question

I want to use $or and $regex operators same time.

db.users.insert([{name: \"Alice\"}, {name: \"Bob\"}, {name: \"Carol\

Answer 1

The $or operator expects whole conditions so the correct form would be:

db.users.find({ "$or": [
    { "name": { "$regex": "^Da"} }, 
    { "name": { "$regex": "^Ali" }}
]})

Or of course using $in:

db.users.find({ "name": { "$in": [/^Da/,/^Ali/] } })

But it's a regex so you can do:

db.users.find({ "name": { "$regex": "^Da|^Ali" } })

Answer 2

It is been a while. However, I would add case insensitive to the regex query like the query below. So that, it doesn't matter if names were saved into the database with capital letters:

db.users.find({ "name": { "$regex": "^Da|^Ali", "$options": "i" } })

Hope it helps