need a flag to indicate that a tag clause has any positive terms
if all terms are negative, short-circuit on type check
index constraint only applies if clause is positive terms
The following queries currently produce bad opcodes:
w[highway][highway != motorway]
required key, negative clause
w[highway != motorway, 'some uncommon type']
negative clause with different types
The following queries currently produce bad opcodes: w[highway][highway != motorway] required key, negative clause w[highway != motorway, 'some uncommon type'] negative clause with different types