Depends on the type of CRDT. You can have a CRDT which supports setting a register (or column value in a row) to a particular value. This is what Crsql appears

Depends on the type of CRDT. You can have a CRDT which supports setting a register (or column value in a row) to a particular value. This is what Crsql appears to do as one sibling comment indicated. There are a number of ways to resolve conflicting updates, but Crsql chooses LWW (last writer wins).