message: More duckdb_libpgquery
diff: namespace duckdb {
  -unique_ptr<SetStatement> Transformer::TransformSet(PGNode *node) {
  +unique_ptr<SetStatement> Transformer::TransformSet(duckdb_libpgquery::PGNode *node) {
  D_ASSERT(node->type == duckdb_libpgquery::T_PGVariableSetStmt);
  auto stmt = reinterpret_cast<duckdb_libpgquery::PGVariableSetStmt *>(node);
  - if (stmt->kind != VariableSetKind::VAR_SET_VALUE) {
  + if (stmt->kind != duckdb_libpgquery::VariableSetKind::VAR_SET_VALUE) {
  throw ParserException("Can only SET a variable to a value");
  }
  auto name = std::string(stmt->name);
  @@ -17,9 +17,9 @@ unique_ptr<SetStatement> Transformer::TransformSet(PGNode *node) {
  throw ParserException("SET needs a single scalar value parameter");
  }
  D_ASSERT(stmt->args->head && stmt->args->head->data.ptr_value);
  - D_ASSERT(((PGNode *)stmt->args->head->data.ptr_value)->type == T_PGAConst);
  + D_ASSERT(((PGNode *)stmt->args->head->data.ptr_value)->type == duckdb_libpgquery::T_PGAConst);
  - auto value = TransformValue(((PGAConst *)stmt->args->head->data.ptr_value)->val)->value;
  + auto value = TransformValue(((duckdb_libpgquery::PGAConst *)stmt->args->head->data.ptr_value)->val)->value;
  return make_unique<SetStatement>(name, value);
  }
  