message: Interpret SIGNED type as INTEGER
diff: @@ -25,7 +25,7 @@ string TransformAlias(Alias *root) {
  TypeId TransformStringToTypeId(char *str) {
  string lower_str = StringUtil::Lower(string(str));
  // Transform column type
  - if (lower_str == "int" || lower_str == "int4") {
  + if (lower_str == "int" || lower_str == "int4" || lower_str == "signed") {
  return TypeId::INTEGER;
  } else if (lower_str == "varchar" || lower_str == "bpchar" ||
  lower_str == "text" || lower_str == "string") {
  