具有多个过滤器的数据存储区查询

Question

There is requirement to query on multiple properties with '!=' on one property and '<=' on another property.

But seeing the Datastore docs , it is not possible. How can we make it possible as i dont want to create multiple indexes.

Answer 1

You simply cannot. You'll have a couple of choices here to work around that:

1- filter on one inequality, then in your code, filter for <=. You will get a bit too many results, but it will work.

2- Create a boolean property referring to your second condition. Add a boolean "smaller_than_x". Whenever you create the entity, the field you need filtered on <=, check if it is smaller than x. If it is, make the boolean true. Then you can filter on the boolean with an equality (this assumes that you always have the same value for x. if your value is dynamic, method 1 will be your best bet)