toSupabaseOrderString method
Creates a Supabase order string for this term.
Example: "created_at.desc.nullslast"
Implementation
String toSupabaseOrderString() {
final direction = ascending ? 'asc' : 'desc';
final nulls = nullsFirst ? 'nullsfirst' : 'nullslast';
return '${column.fullyQualified(null)}.$direction.$nulls';
}