Method simple_join_cond

grammar.cc:109–132

}

simple_join_cond::simple_join_cond(prod *p, table_ref &lhs, table_ref &rhs)
     : join_cond(p, lhs, rhs)
{
retry:
  named_relation *left_rel = &*random_pick(lhs.refs);
  
  if (!left_rel->columns().size())
    { retry(); goto retry; }

  named_relation *right_rel = &*random_pick(rhs.refs);

  column &c1 = random_pick(left_rel->columns());

  for (auto c2 : right_rel->columns()) {
    if (c1.type == c2.type) {
      condition +=
	left_rel->ident() + "." + c1.name + " = " + right_rel->ident() + "." + c2.name + " ";
      break;
    }
  }
  if (condition == "") {
    retry(); goto retry;
  }
}

void simple_join_cond::out(std::ostream &out) {
     out << condition;