v1.4

⭐ CASE support

//  SELECT ID, NAME, MARKS,
//      CASE
//      WHEN MARKS >=80 THEN 'A+'
//      WHEN MARKS >=70 THEN 'A'
//      WHEN MARKS >=60 THEN 'B'
//      WHEN MARKS >=50 THEN 'C'
//      ELSE 'Sorry!! Failed'
//      END
//      FROM STUDENT;
auto rows = storage.select(columns(&Student::id,
                                   &Student::name,
                                   &Student::marks,
                                   case_<std::string>()
                                   .when(greater_or_equal(&Student::marks, 80), then("A+"))
                                   .when(greater_or_equal(&Student::marks, 70), then("A"))
                                   .when(greater_or_equal(&Student::marks, 60), then("B"))
                                   .when(greater_or_equal(&Student::marks, 50), then("C"))
                                   .else_("Sorry!! Failed")
                                   .end()));
//    decltype(rows) is std::vector<std::tuple<decltype(Student::id), decltype(Student::name), decltype(Student::marks), std::string>>

or

//    SELECT CASE country WHEN 'USA' THEN 'Dosmetic' ELSE 'Foreign' END
//    FROM users
auto rows = storage.select(columns(case_<std::string>(&User::country)
                                           .when("USA", then("Dosmetic"))
                                           .else_("Foreign")
                                           .end()),
                                   multi_order_by(order_by(&User::lastName), order_by(&User::firstName)));
//    decltype(rows) is std::vector<std::string>

⭐ Added core functions: COALESCE, ZEROBLOB, SUBSTR

//  SELECT coalesce(10,20);
cout << "coalesce(10,20) = " << storage.select(coalesce<int>(10, 20)).front() << endl;

//  SELECT substr('SQLite substr', 8);
cout << "substr('SQLite substr', 8) = " << storage.select(substr("SQLite substr", 8)).front() << endl;

//  SELECT substr('SQLite substr', 1, 6);
cout << "substr('SQLite substr', 1, 6) = " << storage.select(substr("SQLite substr", 1, 6)).front() << endl;

//  SELECT zeroblob(5);
cout << "zeroblob(5) = " << storage.select(zeroblob(5)).front().size() << endl;

⭐ Dynamic ORDER BY

order_by and multi_order_by are strong typed so you cannot specify ORDER BY column type at runtime. dynamic_order_by solves this problem. dynamic_order_by is a multi_order_by that accepts order_by conditions at runtime. Example:

auto orderBy = dynamic_order_by(storage);
if(shouldOrderByNameAndId){
    orderBy.push_back(order_by(&User::name));
    orderBy.push_back(order_by(&User::id));
}else{
    orderBy.push_back(order_by(&User::id));
}
auto rows = storage.get_all<User>(where(...), orderBy);

⭐ Added LIKE as a query result

Now LIKE can also be used as a core function to retrieve a result:

auto rows = storage.select(like(&User::name, "J%"));
//    decltype(rows) is std::vector<bool>

⭐ Added LIKE ESCAPE option support

LIKE has a third argument and now it is available in sqlite_orm:

//    SELECT name LIKE 'J%' ESCAPE '_'
//    FROM users
auto rows = storage.select(like(&User::name, "J%").escape("_"));

or

//    SELECT LIKE(name, 'J%', '_')
//    FROM users
auto rows = storage.select(like(&User::name, "J%", "_"));

• ⚙️ Added Catch2 unit tests framework into unit tests project
• ⚙️ Added unit tests configurations for even more platforms and compilers (thanks to @Farwaykorse)
• ⚙️ Added contributing doc
• 🚀 Added nullptr binding to WHERE conditions
• 🚀 Reduced binary size
• 🚀 Added composite key support for storage_t::remove function
• 🚀 Reduces memory consumption

🚀 Better error reporting

Before once you get an exception thrown asking e.what() gave you a poor text like NOT NULL constraint failed. Now it is more detailed (thanks to sqlite3_errmsg function) like: NOT NULL constraint failed: users.age: constraint failed

🐞 Bug fixes

• Fixed GCC6 compilation bug
• Fixed runtime error on ARM architecture
• Fixed getter by value support for storage_t::replace and storage_t::update functions
• Fixed bug with iterating over blob values
• Fixed on_copy coping on storage_t copy
• Fixed silencing binding failure - now exception is thrown
• Fixed using std::unique_ptr in storage_t::update_all set arguments
• Fixed incorrect (reverse) arguments order in GROUP BY