Lightweight SQLite3 wrapper for C++
6 Jan 2015
This pair of files implement a very lightweight wrapper for the public-domain SQLite3 database library:
There are no external dependencies, apart from the SQLite3 library itself.
There are several types declared in the header:
io::sqlite::error: an exception thrown when a database error occurs. Use the code() method to obtain the SQLite error code.
io::sqlite::db: a database handle. It's not possible to copy a database object, but they can be swapped and moved (both of these operations are no-throw).
io::sqlite::stmt: a statement handle. Also non-copyable, but swappable and movable.
Opening a database an executing a simple query is easy:
io::sqlite::db my_db("test.db"); my_db.exec("CREATE TABLE foo (key TEXT PRIMARY KEY, value TEXT)");
Using a prepared statement is only slightly more difficult:
io::sqlite::db my_db("test.db"); io::sqlite::stmt s(my_db, "UPDATE foo SET value=? WHERE key=?"); s.bind().text(1, "value goes here").text(2, "some_key"); s.exec();
bind() returns a proxy object providing many methods for binding different data types. The methods provided are:
Note that for consistency with the C API, binding positions are numbered from 1. You can reuse a prepared statement by calling the
Obtaining rows from a prepared query is done by stepping through the execution of the query as follows:
io::sqlite::db my_db("test.db"); io::sqlite::stmt s(my_db, "SELECT key, value FROM foo"); // Prepare bindings before execution, if any... while (s.step()) std::cout << s.row().text(0) << '=' << s.row().text(1) << '\n';
row() method returns a proxy object, like
bind(). Its methods allow you to retrieve column values as one of several data types supported by SQLite. Methods provided are:
Confusingly, columns are numbered from 0, but this is also consistent with the C API.
Copyright (C) 2014 Daniel Beer <>
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