Question

(This project is all written in JS)

So, I have a table called paid_offers, and two columns called offer_id and entity_id
What I’m trying to do is get a count of all the offer_id values associated with a single entity_id.

EDIT: Example: entity_id A has 35 offers available (so, there are 35 rows with unique offer_ids, but all the same entity_id)

So, getting the count is no problem with arrayList.length, but I just need an approach to getting the actual array. Thanks for the help!

EDIT: As per request, more information! I’m going to be using the output as an array.

So, this project is written using Titanium (From appcelerator). I don’t need anything besides the query. So, It’d be what’s inside the quotes here, for those who don’t know.

var offersList = db.execute("SELECT entity_id FROM paid_offers");

Now, the goal is not to just get the list of ID’s but instead the list of offer_id values associated with each unique entity_id value. I would think it would look close to:

var offersList = db.execute("SELECT offer_id FROM paid_offers WHERE entity_id = entity_id

Except that wouldn’t work, but that’s my train of thought while looking through this.

Answer 1

If you’re trying to count the offers for each entity, it’s

SELECT entity_id, COUNT(offer_id) As Count
FROM   paid_offers
GROUP BY entity_id

This will only find entities with at least one offer.