docs: void lookupSelectHints(
  		SqlSelect select,
  		SqlParserPos pos,
  		Collection<SqlMoniker> hintList) {
  		IdInfo info = idPositions.get(pos.toString());
  		if ((info == null) || (info.scope == null)) {
  			SqlNode fromNode = select.getFrom();
  			final SqlValidatorScope fromScope = getFromScope(select);
  			lookupFromHints(fromNode, fromScope, pos, hintList);
  		} else {
  			lookupNameCompletionHints(info.scope, info.id.names,
  				info.id.getParserPosition(), hintList);
  		}
  	}