added session tests

backends/tests/QueryTest.cpp

@@ -370,7 +370,7 @@ TEST_CASE_METHOD(QueryFixture, "Select statement with foreign key and for single
 
   auto expected_flight = flights[0];
 
-  REQUIRE(result.has_value());
+  REQUIRE(result);
   REQUIRE(result->id == expected_flight->id);
   REQUIRE(result->pilot_name == expected_flight->pilot_name);
   REQUIRE(result->airplane.get());

backends/tests/SessionTest.cpp

@@ -51,6 +51,9 @@ TEST_CASE_METHOD(SessionFixture, "Find object with id", "[session][find]") {
   ses.create_schema();
   auto a380 = ses.insert<airplane>(1, "Boeing", "A380");
 
-  ses.find<airplane>(1);
+  auto result = ses.find<airplane>(1);
 
+  REQUIRE(result);
+  auto read_a380 = result.value();
+  REQUIRE(a380->id == read_a380->id);
 }

include/matador/sql/query_intermediates.hpp

@@ -34,10 +34,10 @@ protected:
 class query_intermediate : public basic_query_intermediate
 {
 public:
-  query_intermediate(connection &db, const sql::schema &schema, query_data &data);
+  query_intermediate(connection &db, const sql::schema &schema, const std::shared_ptr<query_data> &data);
 
 protected:
-  query_data &data_;
+  std::shared_ptr<query_data> data_;
 };
 
 class query_execute_finish : public query_intermediate
@@ -64,15 +64,15 @@ public:
   query_result<record> fetch_all();
 
   template < class Type >
-  std::optional<Type> fetch_one()
+  std::unique_ptr<Type> fetch_one()
   {
     auto result = query_result<Type>(fetch());
     auto first = result.begin();
     if (first == result.end()) {
-      return std::nullopt;
+      return nullptr;
     }
 
-    return *first.get();
+    return std::unique_ptr<Type>{first.release()};
   }
   std::optional<record> fetch_one();
 
@@ -202,6 +202,10 @@ public:
   {
     return where_clause(std::make_unique<Condition>(std::move(cond)));
   }
+  query_where_intermediate where(std::unique_ptr<basic_condition> &&cond)
+  {
+    return where_clause(std::move(cond));
+  }
   query_group_by_intermediate group_by(const column &col);
   query_order_by_intermediate order_by(const column &col);
 
@@ -215,7 +219,7 @@ public:
   explicit query_start_intermediate(connection &db, const sql::schema &schema);
 
 protected:
-  query_data data_;
+  std::shared_ptr<query_data> data_ { std::make_shared<query_data>() };
 };
 
 class query_select_intermediate : public query_start_intermediate

include/matador/sql/session.hpp

@@ -4,6 +4,7 @@
 #include "matador/sql/connection.hpp"
 #include "matador/sql/connection_pool.hpp"
 #include "matador/sql/entity.hpp"
+#include "matador/sql/entity_query_builder.hpp"
 #include "matador/sql/statement.hpp"
 #include "matador/sql/schema.hpp"
 
@@ -13,100 +14,6 @@ namespace matador::sql {
 
 class dialect;
 
-struct join_data
-{
-  table join_table;
-  std::unique_ptr<basic_condition> condition;
-};
-
-//class join_collector
-//{
-//private:
-//  explicit join_collector(const sql::schema &ts, std::vector<join_data> &joins)
-//  : table_schema_(ts)
-//  , joins_(joins) {}
-//
-//public:
-//  template < class Type >
-//  static std::vector<join_data> collect(const sql::schema &ts)
-//  {
-//    const auto info = ts.info<Type>();
-//    if (!info) {
-//      return {};
-//    }
-//    std::vector<join_data> joins;
-//    join_collector collector(ts, joins);
-//    Type obj;
-//    matador::utils::access::process(collector, obj);
-//    return joins;
-//  }
-//
-//  template < class PrimaryKeyType >
-//  void on_primary_key(const char *id, PrimaryKeyType &, typename std::enable_if<std::is_integral<PrimaryKeyType>::value && !std::is_same<bool, PrimaryKeyType>::value>::type* = 0) {}
-//  void on_primary_key(const char *id, std::string &, size_t) {}
-//  void on_revision(const char *id, unsigned long long &/*rev*/) {}
-//  template<typename Type>
-//  void on_attribute(const char *id, Type &, const utils::field_attributes &/*attr*/ = utils::null_attributes) {}
-//
-//  template<class Pointer>
-//  void on_belongs_to(const char *id, Pointer &, const utils::foreign_attributes &attr)
-//  {
-//    if (attr.fetch() == utils::fetch_type::LAZY) {
-//      push(id);
-//    } else {
-//      const auto info = table_schema_.info<typename Pointer::value_type>();
-//      if (!info) {
-//        return;
-//      }
-//      table_name_stack_.push(info.value().name);
-//      typename Pointer::value_type obj;
-//      matador::utils::access::process(*this, obj);
-//      table_name_stack_.pop();
-//    }
-//  }
-//  template<class Pointer>
-//  void on_has_one(const char *id, Pointer &, const utils::foreign_attributes &attr)
-//  {
-//    if (attr.fetch() == utils::fetch_type::LAZY || force_lazy_) {
-//      push(id);
-//    } else {
-//      const auto info = table_schema_.info<typename Pointer::value_type>();
-//      if (!info) {
-//        return;
-//      }
-//      table_name_stack_.push(info.value().name);
-//      typename Pointer::value_type obj;
-//      matador::utils::access::process(*this, obj);
-//      table_name_stack_.pop();
-//    }
-//  }
-//  template<class ContainerType>
-//  void on_has_many(const char *, ContainerType &, const char *, const char *, const utils::foreign_attributes &attr)
-//  {
-//    if (attr.fetch() == utils::fetch_type::LAZY || force_lazy_) {
-//      return;
-//    }
-//    const auto info = table_schema_.info<typename ContainerType::value_type::value_type>();
-//    if (!info) {
-//      return;
-//    }
-//
-//    table_name_stack_.push(info.value().name);
-//    typename ContainerType::value_type::value_type obj;
-//    matador::utils::access::process(*this, obj);
-//    table_name_stack_.pop();
-//  }
-//  template<class ContainerType>
-//  void on_has_many(const char *id, ContainerType &c, const utils::foreign_attributes &attr)
-//  {
-//    on_has_many(id, c, "", "", attr);
-//  }
-//
-//private:
-//  const sql::schema &table_schema_;
-//  std::vector<join_data> &joins_;
-//};
-
 class session
 {
 public:
@@ -126,33 +33,35 @@ public:
   }
 
   template<typename Type, typename PrimaryKeyType>
-  entity<Type> find(const PrimaryKeyType &pk) {
+  std::optional<entity<Type>> find(const PrimaryKeyType &pk) {
     auto c = pool_.acquire();
     if (!c.valid()) {
       throw std::logic_error("no database connection available");
     }
-    // collect all columns
-    // - evaluate fetch::Eager flag for relations
     auto info = schema_->info<Type>();
     if (!info) {
       return {};
     }
 
-    auto columns = sql::column_generator::generate<Type>(*schema_);
+    entity_query_builder<PrimaryKeyType> eqb(pk, *schema_);
+    auto data = eqb.template build<Type>();
 
-//    auto joins = sql
-    c->query(*schema_).select({}).from(info->name);
-    // build pk where condition
-    // - check if type has pk
-    // - check type
-//    pk_condition_builder<Type> builder;
-//    auto cond = builder.build(pk);
+    auto q = c->query(*schema_)
+      .select(data->columns)
+      .from(data->root_table_name);
 
-    // create query with relations as requested
-    // 
-//    c->query(*schema_).select<Type>().from("xyz").where().fetch_all();
+    for (auto &jd : data->joins) {
+      q.join_left(jd.join_table)
+        .on(std::move(jd.condition));
+    }
+    auto e = q
+      .where(std::move(data->where_clause))
+      .template fetch_one<Type>();
 
-    return {};
+    if (!e) {
+      return std::nullopt;
+    }
+    return entity<Type>{ e.release() };
   }
 
   template<typename Type>
@@ -167,8 +76,6 @@ public:
   std::vector<sql::column_definition> describe_table(const std::string &table_name) const;
   bool table_exists(const std::string &table_name) const;
 
-  [[nodiscard]] const schema& tables() const;
-
   const class dialect& dialect() const;
 
 private:

src/sql/query_intermediates.cpp

@@ -11,13 +11,13 @@ basic_query_intermediate::basic_query_intermediate(connection &db, const sql::sc
 query_result<record> query_select_finish::fetch_all()
 {
   query_compiler compiler(connection_.dialect());
-  return connection_.fetch(compiler.compile(&data_));
+  return connection_.fetch(compiler.compile(data_.get()));
 }
 
 std::optional<record> query_select_finish::fetch_one()
 {
   query_compiler compiler(connection_.dialect());
-  auto result = connection_.fetch(compiler.compile(&data_));
+  auto result = connection_.fetch(compiler.compile(data_.get()));
   auto first = result.begin();
   if (first == result.end()) {
     return std::nullopt;
@@ -29,142 +29,142 @@ std::optional<record> query_select_finish::fetch_one()
 query_context query_select_finish::build() const
 {
   query_compiler compiler(connection_.dialect());
-  return compiler.compile(&data_);
+  return compiler.compile(data_.get());
 }
 
 std::unique_ptr<query_result_impl> query_select_finish::fetch()
 {
   query_compiler compiler(connection_.dialect());
-  return connection_.fetch(compiler.compile(&data_).sql);
+  return connection_.fetch(compiler.compile(data_.get()).sql);
 }
 
 statement query_select_finish::prepare()
 {
   query_compiler compiler(connection_.dialect());
-  return connection_.prepare(compiler.compile(&data_));
+  return connection_.prepare(compiler.compile(data_.get()));
 }
 
-query_intermediate::query_intermediate(connection &db, const sql::schema &schema, query_data &data)
+query_intermediate::query_intermediate(connection &db, const sql::schema &schema, const std::shared_ptr<query_data> &data)
 : basic_query_intermediate(db, schema), data_(data) {}
 
 query_offset_intermediate query_limit_intermediate::offset(size_t offset)
 {
-  data_.parts.push_back(std::make_unique<query_offset_part>(offset));
+  data_->parts.push_back(std::make_unique<query_offset_part>(offset));
   return {connection_, schema_, data_};
 }
 
 query_limit_intermediate query_offset_intermediate::limit(size_t limit)
 {
-  data_.parts.push_back(std::make_unique<query_limit_part>(limit));
+  data_->parts.push_back(std::make_unique<query_limit_part>(limit));
   return {connection_, schema_, data_};
 }
 
 query_limit_intermediate query_order_direction_intermediate::limit(size_t limit)
 {
-  data_.parts.push_back(std::make_unique<query_limit_part>(limit));
+  data_->parts.push_back(std::make_unique<query_limit_part>(limit));
   return {connection_, schema_, data_};
 }
 
 query_order_by_intermediate query_group_by_intermediate::order_by(const column &col)
 {
-  data_.parts.push_back(std::make_unique<query_order_by_part>(col));
+  data_->parts.push_back(std::make_unique<query_order_by_part>(col));
   return {connection_, schema_, data_};
 }
 
 query_order_direction_intermediate query_order_by_intermediate::asc()
 {
-  data_.parts.push_back(std::make_unique<query_order_by_asc_part>());
+  data_->parts.push_back(std::make_unique<query_order_by_asc_part>());
   return {connection_, schema_, data_};
 }
 
 query_order_direction_intermediate query_order_by_intermediate::desc()
 {
-  data_.parts.push_back(std::make_unique<query_order_by_desc_part>());
+  data_->parts.push_back(std::make_unique<query_order_by_desc_part>());
   return {connection_, schema_, data_};
 }
 
 query_where_intermediate query_from_intermediate::where_clause(std::unique_ptr<basic_condition> &&cond)
 {
-  data_.parts.push_back(std::make_unique<query_where_part>(std::move(cond)));
+  data_->parts.push_back(std::make_unique<query_where_part>(std::move(cond)));
   return {connection_, schema_, data_};
 }
 
 query_group_by_intermediate query_from_intermediate::group_by(const column &col)
 {
-  data_.parts.push_back(std::make_unique<query_group_by_part>(col));
+  data_->parts.push_back(std::make_unique<query_group_by_part>(col));
   return {connection_, schema_, data_};
 }
 
 query_order_by_intermediate query_from_intermediate::order_by(const column &col)
 {
-  data_.parts.push_back(std::make_unique<query_order_by_part>(col));
+  data_->parts.push_back(std::make_unique<query_order_by_part>(col));
   return {connection_, schema_, data_};
 }
 
 query_group_by_intermediate query_where_intermediate::group_by(const column &col)
 {
-  data_.parts.push_back(std::make_unique<query_group_by_part>(col));
+  data_->parts.push_back(std::make_unique<query_group_by_part>(col));
   return {connection_, schema_, data_};
 }
 
 query_order_by_intermediate query_where_intermediate::order_by(const column &col)
 {
-  data_.parts.push_back(std::make_unique<query_order_by_part>(col));
+  data_->parts.push_back(std::make_unique<query_order_by_part>(col));
   return {connection_, schema_, data_};
 }
 
 query_join_intermediate query_on_intermediate::join_left(const table &t)
 {
-  data_.parts.push_back(std::make_unique<query_join_part>(t));
+  data_->parts.push_back(std::make_unique<query_join_part>(t));
   return {connection_, schema_, data_};
 }
 
 query_where_intermediate query_on_intermediate::where_clause(std::unique_ptr<basic_condition> &&cond)
 {
-  data_.parts.push_back(std::make_unique<query_where_part>(std::move(cond)));
+  data_->parts.push_back(std::make_unique<query_where_part>(std::move(cond)));
   return {connection_, schema_, data_};
 }
 
 query_group_by_intermediate query_on_intermediate::group_by(const column &col)
 {
-  data_.parts.push_back(std::make_unique<query_group_by_part>(col));
+  data_->parts.push_back(std::make_unique<query_group_by_part>(col));
   return {connection_, schema_, data_};
 }
 
 query_order_by_intermediate query_on_intermediate::order_by(const column &col)
 {
-  data_.parts.push_back(std::make_unique<query_order_by_part>(col));
+  data_->parts.push_back(std::make_unique<query_order_by_part>(col));
   return {connection_, schema_, data_};
 }
 
 query_on_intermediate query_join_intermediate::on_clause(std::unique_ptr<basic_condition> &&cond)
 {
-  data_.parts.push_back(std::make_unique<query_on_part>(std::move(cond)));
+  data_->parts.push_back(std::make_unique<query_on_part>(std::move(cond)));
   return {connection_, schema_, data_};
 }
 
 query_join_intermediate query_from_intermediate::join_left(const table &t)
 {
-  data_.parts.push_back(std::make_unique<query_join_part>(t));
+  data_->parts.push_back(std::make_unique<query_join_part>(t));
   return {connection_, schema_, data_};
 }
 
 query_select_intermediate::query_select_intermediate(connection &db, const sql::schema &schema, const std::vector<column>& columns)
 : query_start_intermediate(db, schema)
 {
-  data_.parts.push_back(std::make_unique<query_select_part>(columns));
+  data_->parts.push_back(std::make_unique<query_select_part>(columns));
 }
 
 query_from_intermediate query_select_intermediate::from(const table& t)
 {
-  data_.parts.push_back(std::make_unique<query_from_part>(t));
+  data_->parts.push_back(std::make_unique<query_from_part>(t));
   return {connection_, schema_, data_};
 }
 
 query_insert_intermediate::query_insert_intermediate(connection &db, const sql::schema &schema)
 : query_start_intermediate(db, schema)
 {
-  data_.parts.push_back(std::make_unique<query_insert_part>());
+  data_->parts.push_back(std::make_unique<query_insert_part>());
 }
 
 query_into_intermediate query_insert_intermediate::into(const sql::table &table, std::initializer_list<column> column_names)
@@ -174,32 +174,32 @@ query_into_intermediate query_insert_intermediate::into(const sql::table &table,
 
 query_into_intermediate query_insert_intermediate::into(const table &table, std::vector<column> &&column_names)
 {
-  data_.parts.push_back(std::make_unique<query_into_part>(table, column_names));
+  data_->parts.push_back(std::make_unique<query_into_part>(table, column_names));
   return {connection_, schema_, data_};
 }
 
 query_into_intermediate query_insert_intermediate::into(const table &table)
 {
-  data_.parts.push_back(std::make_unique<query_into_part>(table, table.columns));
+  data_->parts.push_back(std::make_unique<query_into_part>(table, table.columns));
   return {connection_, schema_, data_};
 }
 
 size_t query_execute_finish::execute()
 {
   query_compiler compiler(connection_.dialect());
-  return connection_.execute(compiler.compile(&data_).sql);
+  return connection_.execute(compiler.compile(data_.get()).sql);
 }
 
 statement query_execute_finish::prepare()
 {
   query_compiler compiler(connection_.dialect());
-  return connection_.prepare(compiler.compile(&data_));
+  return connection_.prepare(compiler.compile(data_.get()));
 }
 
 query_context query_execute_finish::build() const
 {
   query_compiler compiler(connection_.dialect());
-  return compiler.compile(&data_);
+  return compiler.compile(data_.get());
 }
 
 query_execute_finish query_into_intermediate::values(std::initializer_list<any_type> values)
@@ -209,13 +209,13 @@ query_execute_finish query_into_intermediate::values(std::initializer_list<any_t
 
 query_execute_finish query_into_intermediate::values(std::vector<any_type> &&values)
 {
-  data_.parts.push_back(std::make_unique<query_values_part>(std::move(values)));
+  data_->parts.push_back(std::make_unique<query_values_part>(std::move(values)));
   return {connection_, schema_, data_};
 }
 
 query_create_intermediate::query_create_intermediate(connection &db, const sql::schema &schema)
 : query_start_intermediate(db, schema) {
-  data_.parts.push_back(std::make_unique<query_create_part>());
+  data_->parts.push_back(std::make_unique<query_create_part>());
 }
 
 query_execute_finish query_create_intermediate::table(const sql::table &table, std::initializer_list<column_definition> columns)
@@ -225,38 +225,38 @@ query_execute_finish query_create_intermediate::table(const sql::table &table, s
 
 query_execute_finish query_create_intermediate::table(const sql::table &table, const std::vector<column_definition> &columns)
 {
-  data_.parts.push_back(std::make_unique<query_create_table_part>(table, columns));
+  data_->parts.push_back(std::make_unique<query_create_table_part>(table, columns));
   return {connection_, schema_, data_};
 }
 
 query_drop_intermediate::query_drop_intermediate(connection &db, const sql::schema &schema)
 : query_start_intermediate(db, schema)
 {
-  data_.parts.push_back(std::make_unique<query_drop_part>());
+  data_->parts.push_back(std::make_unique<query_drop_part>());
 }
 
 query_execute_finish query_drop_intermediate::table(const sql::table &table)
 {
-  data_.parts.push_back(std::make_unique<query_drop_table_part>(table));
+  data_->parts.push_back(std::make_unique<query_drop_table_part>(table));
   return {connection_, schema_, data_};
 }
 
 query_order_by_intermediate query_execute_where_intermediate::order_by(const column &col)
 {
-  data_.parts.push_back(std::make_unique<query_order_by_part>(col));
+  data_->parts.push_back(std::make_unique<query_order_by_part>(col));
   return {connection_, schema_, data_};
 }
 
 query_execute_where_intermediate query_set_intermediate::where_clause(std::unique_ptr<basic_condition> &&cond)
 {
-  data_.parts.push_back(std::make_unique<query_where_part>(std::move(cond)));
+  data_->parts.push_back(std::make_unique<query_where_part>(std::move(cond)));
   return {connection_, schema_, data_};
 }
 
 query_update_intermediate::query_update_intermediate(connection &db, const sql::schema &schema, const sql::table& table)
 : query_start_intermediate(db, schema)
 {
-  data_.parts.push_back(std::make_unique<query_update_part>(table));
+  data_->parts.push_back(std::make_unique<query_update_part>(table));
 }
 
 query_set_intermediate query_update_intermediate::set(std::initializer_list<key_value_pair> columns)
@@ -266,26 +266,26 @@ query_set_intermediate query_update_intermediate::set(std::initializer_list<key_
 
 query_set_intermediate query_update_intermediate::set(std::vector<key_value_pair> &&columns)
 {
-  data_.parts.push_back(std::make_unique<query_set_part>(std::move(columns)));
+  data_->parts.push_back(std::make_unique<query_set_part>(std::move(columns)));
   return {connection_, schema_, data_};
 
 }
 
 query_execute_where_intermediate query_delete_from_intermediate::where_clause(std::unique_ptr<basic_condition> &&cond)
 {
-  data_.parts.push_back(std::make_unique<query_where_part>(std::move(cond)));
+  data_->parts.push_back(std::make_unique<query_where_part>(std::move(cond)));
   return {connection_, schema_, data_};
 }
 
 query_delete_intermediate::query_delete_intermediate(connection &db, const sql::schema &schema)
 : query_start_intermediate(db, schema)
 {
-  data_.parts.push_back(std::make_unique<query_delete_part>());
+  data_->parts.push_back(std::make_unique<query_delete_part>());
 }
 
 query_delete_from_intermediate query_delete_intermediate::from(const sql::table &table)
 {
-  data_.parts.push_back(std::make_unique<query_delete_from_part>(table));
+  data_->parts.push_back(std::make_unique<query_delete_from_part>(table));
   return {connection_, schema_, data_};
 }
 

src/sql/session.cpp

@@ -89,11 +89,6 @@ bool session::table_exists(const std::string &table_name) const
   return c->exists(dialect_.default_schema_name(), table_name);
 }
 
-const schema& session::tables() const
-{
-  return *schema_;
-}
-
 const class dialect &session::dialect() const
 {
   return dialect_;

test/EntityQueryBuilderTest.cpp

@@ -1,7 +1,6 @@
 #include <catch2/catch_test_macros.hpp>
 
 #include <matador/sql/connection.hpp>
-#include <matador/sql/dialect.hpp>
 #include <matador/sql/entity_query_builder.hpp>
 
 #include "models/author.hpp"
@@ -25,8 +24,21 @@ TEST_CASE("Create sql query data for entity with eager belongs to", "[query][ent
   REQUIRE(data.has_value());
   REQUIRE(data->root_table_name == "books");
   REQUIRE(data->joins.size() == 1);
-  REQUIRE(data->columns.size() == 9);
-  REQUIRE(data->where_clause);
+  const std::vector<column> expected_columns {
+    { "books", "id", "c01" },
+    { "books", "title", "c02" },
+    { "authors", "id", "c03" },
+    { "authors", "first_name", "c04" },
+    { "authors", "last_name", "c05" },
+    { "authors", "date_of_birth", "c06" },
+    { "authors", "year_of_birth", "c07" },
+    { "authors", "distinguished", "c08" },
+    { "books", "published_in", "c09" }
+  };
+  REQUIRE(data->columns.size() == expected_columns.size());
+  for (size_t i = 0; i != expected_columns.size(); ++i) {
+    REQUIRE(expected_columns[i].equals(data->columns[i]));
+  }
 
   std::vector<std::pair<std::string, std::string>> expected_join_data {
     { "books", "books.author_id = authors.id"}
@@ -40,15 +52,19 @@ TEST_CASE("Create sql query data for entity with eager belongs to", "[query][ent
     ++index;
   }
 
+  REQUIRE(data->where_clause);
   auto cond = data->where_clause->evaluate(db.dialect(), qc);
   REQUIRE(cond == "books.id = 17");
 
-  auto &jd = data->joins.front();
-
-  auto context = db.query(scm)
+  auto q = db.query(scm)
     .select(data->columns)
-    .from(data->root_table_name)
-    .join_left(jd.join_table).on(std::move(jd.condition))
+    .from(data->root_table_name);
+
+  for (auto &jd : data->joins) {
+    q.join_left(jd.join_table)
+      .on(std::move(jd.condition));
+  }
+  auto context = q
     .where(std::move(data->where_clause))
     .build();
 }
@@ -68,8 +84,27 @@ TEST_CASE("Create sql query data for entity with eager has many belongs to", "[q
   REQUIRE(data.has_value());
   REQUIRE(data->root_table_name == "orders");
   REQUIRE(data->joins.size() == 1);
-  REQUIRE(data->columns.size() == 15);
-  REQUIRE(data->where_clause);
+  const std::vector<column> expected_columns = {
+    { "orders", "order_id", "c01" },
+    { "orders", "order_date", "c02" },
+    { "orders", "required_date", "c03" },
+    { "orders", "shipped_date", "c04" },
+    { "orders", "ship_via", "c05" },
+    { "orders", "freight", "c06" },
+    { "orders", "ship_name", "c07" },
+    { "orders", "ship_address", "c08" },
+    { "orders", "ship_city", "c09" },
+    { "orders", "ship_region", "c10" },
+    { "orders", "ship_postal_code", "c11" },
+    { "orders", "ship_country", "c12" },
+    { "order_details", "order_details_id", "c13" },
+    { "order_details", "order_id", "c14" },
+    { "order_details", "product_id", "c15" }
+  };
+  REQUIRE(data->columns.size() == expected_columns.size());
+  for (size_t i = 0; i != expected_columns.size(); ++i) {
+    REQUIRE(expected_columns[i].equals(data->columns[i]));
+  }
 
   std::vector<std::pair<std::string, std::string>> expected_join_data {
     { "orders", "orders.order_id = order_details.order_id"}
@@ -83,6 +118,7 @@ TEST_CASE("Create sql query data for entity with eager has many belongs to", "[q
     ++index;
   }
 
+  REQUIRE(data->where_clause);
   auto cond = data->where_clause->evaluate(db.dialect(), qc);
   REQUIRE(cond == "orders.order_id = 17");
 }
@@ -102,8 +138,16 @@ TEST_CASE("Create sql query data for entity with eager many to many", "[query][e
   REQUIRE(data.has_value());
   REQUIRE(data->root_table_name == "ingredients");
   REQUIRE(data->joins.size() == 2);
-  REQUIRE(data->columns.size() == 4);
-  REQUIRE(data->where_clause);
+  const std::vector<column> expected_columns {
+    { "ingredients", "id", "c01" },
+    { "ingredients", "name", "c02" },
+    { "recipes", "id", "c03" },
+    { "recipes", "name", "c04" }
+  };
+  REQUIRE(data->columns.size() == expected_columns.size());
+  for (size_t i = 0; i != expected_columns.size(); ++i) {
+    REQUIRE(expected_columns[i].equals(data->columns[i]));
+  }
 
   std::vector<std::pair<std::string, std::string>> expected_join_data {
     { "ingredients", "ingredients.id = recipe_ingredients.ingredient_id"},
@@ -118,6 +162,7 @@ TEST_CASE("Create sql query data for entity with eager many to many", "[query][e
     ++index;
   }
 
+  REQUIRE(data->where_clause);
   auto cond = data->where_clause->evaluate(db.dialect(), qc);
   REQUIRE(cond == "ingredients.id = 17");
 }