added query helper macro and join query parts

src/sql/query_intermediates.cpp

@@ -1,6 +1,7 @@
 #include "matador/sql/query_intermediates.hpp"
 #include "matador/sql/session.hpp"
 #include "matador/sql/query_compiler.hpp"
+#include "matador/sql/condition.hpp"
 
 namespace matador::sql {
 basic_query_intermediate::basic_query_intermediate(connection &db)
@@ -125,16 +126,10 @@ query_order_by_intermediate query_on_intermediate::order_by(const std::string &n
 //  return {connection_, builder_.order_by(name)};
 }
 
-query_on_intermediate query_join_intermediate::on(const basic_condition &cond)
+query_join_intermediate query_from_intermediate::join_left(const table &t)
 {
+  data_.parts.push_back(std::make_unique<query_join_part>(t));
   return {connection_, data_};
-//  return {connection_, builder_.on(column, join_column)};
-}
-
-query_join_intermediate query_from_intermediate::join_left(const std::string &join_table_name, const std::string &as)
-{
-  return {connection_, data_};
-//  return {connection_, builder_.join(join_table_name, join_type_t::INNER, as)};
 }
 
 query_where_intermediate query_from_intermediate::where(const basic_condition &cond)
@@ -149,8 +144,9 @@ query_select_intermediate::query_select_intermediate(connection &db, const std::
   data_.parts.push_back(std::make_unique<query_select_part>(columns));
 }
 
-query_from_intermediate query_select_intermediate::from(const std::string &table, const std::string &as)
+query_from_intermediate query_select_intermediate::from(const table& t)
 {
+  data_.parts.push_back(std::make_unique<query_from_part>(t));
   return {connection_, data_};
 //  return {connection_, builder_.from(table, as)};
 }