String or integer query in mongoDB for a single field

Question

In MongoDB, there is field named vehId. It contains value in string as well in integer. like

{
"vehId" : "12"
}

or

{
"vehId" : 12
}

or

{
"vehId" : ""
}

If I do query as vehId as integer it return only vehId having value in Integer as for string it return only string. But I need a single query for both string and integer . Like

collection.find({"vehId" : <value> })

I need a single query that return all value. If I pass vehId as integer it also return values having vehId in string and vice-versa

Answer 1

So If you have situation like above, you can get your results easily with:

collection.find({"vehId" : { $in: [intval($vehId), $vehId}})