swift-sqlite

swift-sqlite is a cross-platform modernization of the SQLite.swift project.

It includes SQLite3 with Full-text search and SQLCipher extensions, and works out-of-the-box on macOS, iOS, Linux, Android, and Windows.

Features

• A pure-Swift interface
• Embeds a modern and consistent sqlite (3.46.1) and sqlcipher (4.6.1) build in the library
• A type-safe, optional-aware SQL expression builder
• A flexible, chainable, lazy-executing query layer
• Automatically-typed data access
• A lightweight, uncomplicated query and parameter binding interface
• Developer-friendly error handling and debugging
• Full-text search support
• Well-documented
• Extensively tested
• SQLCipher support using the embedded LibTomCrypt library
• Schema query/migration
• Works on iOS, macOS, Android, Windows, and Linux

Usage

import SQLiteDB

// Wrap everything in a do...catch to handle errors
do {
    let db = try Connection("path/to/db.sqlite3")

    let users = Table("users")
    let id = SQLExpression<Int64>("id")
    let name = SQLExpression<String?>("name")
    let email = SQLExpression<String>("email")

    try db.run(users.create { t in
        t.column(id, primaryKey: true)
        t.column(name)
        t.column(email, unique: true)
    })
    // CREATE TABLE "users" (
    //     "id" INTEGER PRIMARY KEY NOT NULL,
    //     "name" TEXT,
    //     "email" TEXT NOT NULL UNIQUE
    // )

    let insert = users.insert(name <- "Alice", email <- "[email protected]")
    let rowid = try db.run(insert)
    // INSERT INTO "users" ("name", "email") VALUES ('Alice', '[email protected]')

    for user in try db.prepare(users) {
        print("id: \(user[id]), name: \(user[name]), email: \(user[email])")
        // id: 1, name: Optional("Alice"), email: [email protected]
    }
    // SELECT * FROM "users"

    let alice = users.filter(id == rowid)

    try db.run(alice.update(email <- email.replace("mac.com", with: "me.com")))
    // UPDATE "users" SET "email" = replace("email", 'mac.com', 'me.com')
    // WHERE ("id" = 1)

    try db.run(alice.delete())
    // DELETE FROM "users" WHERE ("id" = 1)

    try db.scalar(users.count) // 0
    // SELECT count(*) FROM "users"
} catch {
    print (error)
}

SQLiteDB also works as a lightweight, Swift-friendly wrapper over the C API.

// Wrap everything in a do...catch to handle errors
do {
    // ...

    let stmt = try db.prepare("INSERT INTO users (email) VALUES (?)")
    for email in ["[email protected]", "[email protected]"] {
        try stmt.run(email)
    }

    db.totalChanges    // 3
    db.changes         // 1
    db.lastInsertRowid // 3

    for row in try db.prepare("SELECT id, email FROM users") {
        print("id: \(row[0]), email: \(row[1])")
        // id: Optional(2), email: Optional("[email protected]")
        // id: Optional(3), email: Optional("[email protected]")
    }

    try db.scalar("SELECT count(*) FROM users") // 2
} catch {
    print (error)
}

Read the documentation

Installation

Swift Package Manager

The Swift Package Manager is a tool for managing the distribution of Swift code.

1. Add the following to your Package.swift file:

dependencies: [
    .package(url: "https://github.com/skiptools/swift-sqlite.git", from "1.0.0")
]

2. Build your project:

$ swift build

Communication

[See the planning document] for a roadmap and existing feature requests.

Read the contributing guidelines. The TL;DR (but please; R):

• Need help or have a general question? Ask on Stack Overflow (tag sqlite.swift).
• Found a bug or have a feature request? Open an issue.
• Want to contribute? Submit a pull request.

Original author

• Stephen Celis (@stephencelis)

License

SQLite.swift is available under the MIT license. See the LICENSE file for more information.

Alternatives

Looking for something else? Try another Swift wrapper (or FMDB):

• SQLite.swift
• GRDB