How can I use a specific condition to query for a particular element in an $in array in MongoDB?

Although I am skeptical that this is achievable, I will give it a shot here.

Below are some examples of records in the database:

{
    type: 'fruit',
    name: 'apple',
    quantity: 3
}
{
    type: 'fruit',
    name: 'orange',
    quantity: 10
}
{
    type: 'vegetable',
    name: 'tomato',
    quantity: 4
}
{
    type: 'meat',
    name: 'beef',
    quantity: 2
}

Now, let's take a look at the query:

{type: { $in: ['fruit', 'vegetable', 'meat']}}

This query will return all records in the collection with types 'apple', 'orange', 'tomato', and 'beef'.

I am interested in querying 'fruit', 'vegetable', 'meat', and also the records with quantities greater than 5 for

'fruit' specifically, not the others
. Therefore, the desired result would be:

orange, tomato, beef

I am unsure if my explanation is clear, but is this type of query possible? Or should I consider running two separate queries? Thank you for your time.

Answer №1

Here is a suggestion for your query:

{ 
    $or: [
        { type: { $in: ['vegetable', 'meat'] } },
        { type: { $in: ['fruit'] }, quantity: { $gt: 5 } } 
    ]
}

Hopefully this information proves useful.

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