Revert "Use a different Date data type"

This reverts commit 857c7d3972a03cbeebf730d99b924d3710dee6a0.

1 files changed, 2 insertions, 9 deletions

diff --git a/src/database/sqlite3_engine.hpp b/src/database/sqlite3_engine.hpp
index 1b37e8c..a7bfcdb 100644
--- a/src/database/sqlite3_engine.hpp
+++ b/src/database/sqlite3_engine.hpp
@@ -23,19 +23,12 @@ class Sqlite3Engine: public DatabaseEngine
   ~Sqlite3Engine();
 
   static std::unique_ptr<DatabaseEngine> open(const std::string& string);
-  EngineType engine_type() const override
-  {
-    return EngineType::Sqlite3;
-  }
 
-  std::map<std::string, std::string> get_all_columns_from_table(const std::string& table_name) override final;
+  std::set<std::string> get_all_columns_from_table(const std::string& table_name) override final;
   std::tuple<bool, std::string> raw_exec(const std::string& query) override final;
   std::unique_ptr<Statement> prepare(const std::string& query) override;
   void extract_last_insert_rowid(Statement& statement) override;
-  std::string id_column_type() const override;
-  std::string datetime_column_type() const override;
-  void convert_date_format(DatabaseEngine&) override;
-  long double epoch_to_floating_value(long double d) const override;
+  std::string id_column_type() override;
 private:
   sqlite3* const db;
 };