https://github.com/yhirose/cpp-sqlitelib

C++ SQLite wrapper library
https://github.com/yhirose/cpp-sqlitelib

cpp head-only sqlite

Last synced: about 2 months ago
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C++ SQLite wrapper library

• Host: GitHub
• URL: https://github.com/yhirose/cpp-sqlitelib
• Owner: yhirose
• License: mit
• Created: 2013-06-20T17:16:25.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2022-07-12T19:39:30.000Z (about 2 years ago)
• Last Synced: 2024-04-13T21:13:00.769Z (5 months ago)
• Topics: cpp, head-only, sqlite
• Language: C
• Homepage:
• Size: 3.76 MB
• Stars: 48
• Watchers: 4
• Forks: 19
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesomecpp - cpp-sqlitelib - - C++11 SQLite wrapper library. (Database)

README

        
cpp-sqlitelib

=============

A single file C++ header-only SQLite wrapper library

## Open database

    #include 

    using namespace sqlitelib;

    auto db = Sqlite("./test.db");

## Create table

    db.execute(R"(

      CREATE TABLE IF NOT EXISTS people (

        id INTEGER PRIMARY KEY AUTOINCREMENT,

        name TEXT,

        age INTEGER,

        data BLOB

      )

    )");

## Drop table

    db.execute("DROP TABLE IF EXISTS people");

## Insert records

    auto stmt = db.prepare("INSERT INTO people (name, age, data) VALUES (?, ?, ?)");

    stmt.execute("john", 10, vector({ 'A', 'B', 'C', 'D' }));

    stmt.execute("paul", 20, vector({ 'E', 'B', 'G', 'H' }));

    stmt.execute("mark", 15, vector({ 'I', 'J', 'K', 'L' }));

    stmt.execute("luke", 25, vector({ 'M', 'N', 'O', 'P' }));

## Select a record (single colum)

    auto val = db.execute_value("SELECT age FROM people WHERE name='john'");

    val; // 10

## Select records (multiple columns)

    auto rows = db.execute("SELECT age, name FROM people");

    rows.size(); // 4

    auto [age, name] = rows[3]; // age: 25, name: luke

## Bind #1

    auto stmt = db.prepare("SELECT name FROM people WHERE age > ?");

    auto rows = stmt.execute(10);

    rows.size(); // 3

    rows[0];     // paul

    auto rows = stmt.bind(10).execute();

    rows.size(); // 3

    rows[0];     // paul

## Bind #2

    auto val = db.execute_value("SELECT id FROM people WHERE name=? AND age=?", "john", 10);

    val; // 1

## Cursor (multiple columns)

    auto stmt = db.prepare("SELECT name, age FROM people");

    auto cursor = stmt.execute_cursor();

    for (auto it = cursor.begin(); it != cursor.end(); ++it) {

      get<0>(*it);

      get<1>(*it);

      ++it;

    }

    // With C++17 structured binding

    for (const auto& [name, age] : stmt.execute_cursor()) {

      ;

    }

## Cursor (single column)

    auto stmt = db.prepare("SELECT name FROM people");

    for (const auto& x: stmt.execute_cursor()) {

      ;

    }

## Count

    auto val = db.execute_value("SELECT COUNT(*) FROM people");

    val; // 4

## Flat API

    for (const auto& [name, age] :

         db.execute_cursor("SELECT name, age FROM people")) {

      ;

    }

    for (const auto& x: db.execute_cursor("SELECT name FROM people")) {

      ;

    }

License

-------

MIT license (© 2021 Yuji Hirose)