Here are my two tables that I'm trying to join...

```
    name: notifications
-------------------------------------------
content | position | member  | contentType
-------------------------------------------
test a  | manager  | testera | Email
test b  | manager  | testera | Email
test c  | manager  | testera | SMS
-------------------------------------------

    name: position
-----------------------------------------------
position  |  member  |  getsEmail  |  getsSMS
-----------------------------------------------
manager   |  testera |  1          |  0
employee  |  testerb |  0          |  1
-----------------------------------------------

```

I would like to return the rows from the "notifications" table where the member is "testera", and the contentType from the "position" table is equal to "1". So for the above table data, I want to get the first two rows from "notifications" returned since the contentType of "Email" is allowed in the position table.

Is this possible to do with my table structure?