DocumentDB SQL with ARRAY_CONTAINS

Question

I\'m playing around on https://www.documentdb.com/sql/demo, which allows me to query against sample documents that look like:

{
  \"id\": \"19015\",
  \"desc         


        

Answer 1

EDIT: ARRAY_CONTAINS now supports partial match as Jim Scott points out below, which I think is a better answer than this accepted one.

You servings array only has one entry {"amount": 1, "description": "bar", "weightInGrams": 21}.

This should work for your example with a single serving:

SELECT root
FROM root 
WHERE root.servings[0].description = "bar"

But it sounds like that's not what you are looking for. So, assuming you have this:

{
  ...
  "servings": [
    {"description": "baz", ....},
    {"description": "bar", ....},
    {"description": "bejeweled", ....}
  ],
  ...
}

And you want to find the documents where one of the servings has the description "bar", then you could use this UDF:

function(servings, description) {
    var s, _i, _len;
    for (_i = 0, _len = servings.length; _i < _len; _i++) {
        s = servings[_i];
        if (s.description === description) {
            return true;
        }
    }
    return false;
}

With this query:

SELECT * FROM c WHERE udf.findServingsByDescription(c.servings, "bar")