Prisma

Can someone explain why i’m getting `"Cannot query field 'someUserExists' on type 'Query'.` when trying either `someUserExists` or `SomeUserExists` (docs are inconsistent wrt leading capital)? I’m following this tutorial and assumed since there’s a default user schema that this filter would exist
```
query {
  someUserExists(filter: {
    id: "abcdefg"
  })
}
```

<@U5JU252E9> hey, where did you find `someUserExists`? It should be `SomeUserExists` :slightly_smiling_face:

<@U0RQY0KK5> both fail but from here <https://www.graph.cool/docs/tutorials/authorization-content-management-system-miesho4goo/>

```
{
  "data": null,
  "errors": [
    {
      "message": "Cannot query field 'SomeUserExists' on type 'Query'. (line 2, column 3):\n  SomeUserExists(filter: {\n  ^",
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ]
    }
  ]
}
```

Ah you are trying to put that into the Playground query editor

But you really need to define a new permission query using the permissions view

yeah i was mainly using playground to determine which of those filters are available.. the docs are light on details there

You can't use the Playground to experiment with the permission queries

you can use the "Permission Playground" however to do it

the reason is it's a different GraphQL schema :slightly_smiling_face:

but you can still experiment with the `filter` argument in the normal playground because it's the same

<@U0RQY0KK5> it would be really helpful if this page <https://www.graph.cool/docs/reference/simple-api/filtering-by-field-xookaexai0/#explore-available-filter-criteria> enumerated all the generated filters and criteria for a given schema. i.e. lists of things like
```
Filters
`Some${type}Exists`
…

Criteria
`${field}_in`

(if field is relation)
`${field}_some`
`${field}_every`
`${field}_none`
```

I know there are some examples like that interspersed throughout the documentation but I think a single grouping of them would make learning / using them easier

thanks I created a new issue here: <https://github.com/graphcool/content/issues/161>