query parts progress

demo/main.cpp

@@ -49,8 +49,8 @@ struct book
   }
 };
 
-QUERY_HELPER(author, id, first_name, last_name, date_of_birth, year_of_birth, distinguished)
-QUERY_HELPER(book, id, book_author, title, published_in)
+QUERY_HELPER(authors, id, first_name, last_name, date_of_birth, year_of_birth, distinguished)
+QUERY_HELPER(books, id, book_author, title, published_in)
 
 int main()
 {
@@ -67,7 +67,7 @@ int main()
   connection c(dns, s);
 
   auto books = c.query()
-    .select<book>({qh::book.id.name})
+    .select<book>({matador::qh::books.id.name})
     .from({"book"})
     .join_left({"authors"})
     .on("book.author_id"_col == "author.id"_col)