SQLite.swift

A type-safe, Swift-language layer over SQLite3.

SQLite.swift provides compile-time confidence in SQL statement syntax and intent.

Features

A pure-Swift interface
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
Companion project has SQLCipher support
Active support at StackOverflow, and Gitter Chat Room (experimental)

Usage

import SQLite

let db = try Connection("path/to/db.sqlite3")

let users = Table("users")
let id = Expression<Int64>("id")
let name = Expression<String?>("name")
let email = Expression<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 <- "alice@mac.com")
let rowid = try db.run(insert)
// INSERT INTO "users" ("name", "email") VALUES ('Alice', 'alice@mac.com')

for user in try db.prepare(users) {
    print("id: \(user[id]), name: \(user[name]), email: \(user[email])")
    // id: 1, name: Optional("Alice"), email: alice@mac.com
}
// 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)

db.scalar(users.count) // 0
// SELECT count(*) FROM "users"

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

let stmt = try db.prepare("INSERT INTO users (email) VALUES (?)")
for email in ["betty@icloud.com", "cathy@icloud.com"] {
    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("betty@icloud.com")
    // id: Optional(3), email: Optional("cathy@icloud.com")
}

db.scalar("SELECT count(*) FROM users") // 2

Read the documentation or explore more, interactively, from the Xcode project’s playground.

For a more comprehensive example, see this article and the companion repository.

Installation

Note: SQLite.swift requires Swift 3 (and Xcode 8) or greater. If you absolutely need compatibility with Swift 2.3 you can use the swift-2.3 branch or older released versions. New development will happen exclusively on the master/Swift 3 branch.

The following instructions apply to targets that support embedded Swift frameworks. To use SQLite.swift in iOS 7 or an OS X command line tool, please read the Frameworkless Targets section of the documentation.

Carthage

Carthage is a simple, decentralized dependency manager for Cocoa. To install SQLite.swift with Carthage:

Make sure Carthage is installed.

Update your Cartfile to include the following:

github "stephencelis/SQLite.swift" ~> 0.11.0

Run carthage update and add the appropriate framework.

CocoaPods

CocoaPods is a dependency manager for Cocoa projects. To install SQLite.swift with CocoaPods:

Make sure the latest CocoaPods beta is installed. (SQLite.swift requires version 1.0.0.beta.6 or greater.)

# Using the default Ruby install will require you to use sudo when
# installing and updating gems.
[sudo] gem install cocoapods

Update your Podfile to include the following:

use_frameworks!

pod 'SQLite.swift', '~> 0.11.0'

Run pod install.

Manual

To install SQLite.swift as an Xcode sub-project:

Drag the SQLite.xcodeproj file into your own project. (Submodule, clone, or download the project first.)
In your target’s General tab, click the + button under Linked Frameworks and Libraries.
Select the appropriate SQLite.framework for your platform.
Add.

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.

Author

Stephen Celis (@stephencelis)

License

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

These projects enhance or use SQLite.swift:

SQLiteCipher.swift
SQLiteMigrationManager.swift (inspired by FMDBMigrationManager)

Alternatives

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

alimir1/SQLite.swift