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What is the appropriate code to delete records by Specific value from android studio .
Required: Delete all records If starCount field equal 0. 

private void deleteData(String strTitle){ }

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In order to delete a node you need to know its full path. This means you you'll need to run a query to find the node with starCount equal to 0 and then delete each of them individually.

Something like this:

DatabaseReference ref = FirebaseDatabase.getInstance().getReference("posts"); Query query = ref.orderByChild("starCount").equalTo(0); query.addListenerForSingleValueEvent(new ValueEventListener() { @Override public void onDataChange(DataSnapshot dataSnapshot) { for (DataSnapshot postSnapshot: dataSnapshot.getChildren()) { postSnapshot.getRef().removeValue(); } } @Override public void onCancelled(DatabaseError databaseError) { throw databaseError.toException(); } }
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2 Comments

Thank you very much Frank van Puffelen 100%. How to update the (title field) condition (starCount =0 and body="d1")
StackOverflow is not a site which does your homework. Please do some research on Firebase Database

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