Efficient way to query sql like in firebase

Question

What's the updated and effient way to query sql like in firebase? I've search in forums and they say I should query all the documents then just do a javascript match function

Answer 1

Neither database provided by Firebase (Realtime Database and Firestore) have support for LIKE queries. This is not going to change any time soon, as these types of queries do not scale with the sort of indexes provided by these database.

You can do string prefix queries, which is similar to "WHERE field LIKE foo%", but that's all you get.

For Realtime Database, see:

• Firebase matching substring
• How to perform sql "LIKE" operation on firebase?
• Firebase query - Find item with child that contains string

For Firestore, see:

• Google Firestore: Query on substring of a property value (text search)
• Firestore Comparison Operators - contains, does not contain, starts with
• Is there a way to search sub string at Firestore?