Which of the following is the correct Firestore query syntax to filter documents where 'age' is greater than 30?

easy📝 Syntax Q3 of 15

GCP - Cloud Firestore and Bigtable

Adb.collection('users').filter('age', '>', 30)

Bdb.collection('users').query('age', '>', 30)

Cdb.collection('users').where('age', '>', 30)

Ddb.collection('users').find('age', '>', 30)

Step-by-Step Solution

Solution:

Step 1: Recall Firestore query syntax
Firestore uses .where(field, operator, value) to filter documents.
Step 2: Match syntax to options
Only db.collection('users').where('age', '>', 30) uses .where with correct parameters.
Final Answer:
db.collection('users').where('age', '>', 30) -> Option C
Quick Check:
Use .where(field, operator, value) for filters [OK]

Quick Trick: Use .where() for filtering in Firestore queries [OK]

Common Mistakes:

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