small fixes for table, column and query_macro

include/matador/query/column.hpp

@@ -34,6 +34,8 @@ public:
   [[nodiscard]] std::shared_ptr<table> table() const;
   void table(const std::shared_ptr<query::table>& t);
 
+  operator const std::string&() const;
+
 private:
   std::shared_ptr<query::table> table_;
   std::string name;

include/matador/query/key_value_generator.hpp

@@ -4,7 +4,6 @@
 #include "matador/query/fk_value_extractor.hpp"
 #include "matador/query/internal/column_value_pair.hpp"
 
-#include "matador/utils/foreign_attributes.hpp"
 #include "matador/utils/primary_key_attribute.hpp"
 
 #include <vector>

include/matador/query/table.hpp

@@ -15,8 +15,7 @@ public:
   table() = default;
   table(const char *name); // NOLINT(*-explicit-constructor)
   table(std::string name); // NOLINT(*-explicit-constructor)
-  table(const char *name, std::string as); // NOLINT(*-explicit-constructor)
-  table(std::string name, std::string as); // NOLINT(*-explicit-constructor)
+  table(std::string name, std::string as);
   table(std::string name, std::string as, const std::vector<column> &columns);
 
   table& as(const std::string &a);
@@ -31,7 +30,9 @@ public:
   [[nodiscard]] const std::string& alias() const;
   [[nodiscard]] const std::vector<column>& columns() const;
 
-  operator const std::vector<column>&() const;
+  [[nodiscard]] column column(const std::string &name) const;
+
+  operator const std::vector<query::column>&() const;
 private:
   friend class column;
 
@@ -39,7 +40,7 @@ private:
   std::string alias_;
 
   std::string schema_name_;
-  std::vector<column> columns_;
+  std::vector<query::column> columns_;
 };
 
 table operator ""_tab(const char *name, size_t len);