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Querying nodes in firebase that have a named key under them.
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| "application": { | |
| "companies": { | |
| "firebase": { | |
| "creation": { | |
| "name": "Firebase Inc", | |
| "location": "USA" | |
| }, | |
| "google": { | |
| "creattion": { | |
| "name": "Google Inc", | |
| "location": "USA" | |
| } | |
| } | |
| "facebook": { | |
| }, | |
| "apple": { | |
| } | |
| } | |
| } | |
| } |
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| In above data structure, we have some companies. A few of them(google and firebase) have key 'creation' under them. Facebook and Apple however do not have 'creation' key under them. | |
| 1. How do I query companies that have 'creation' key under them, no matter what its value is? | |
| 2. How do I query companies that do not have 'creation' key under them? |
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