SQLite.swift

import SQLite

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

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

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

    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")
    }

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

dependencies: [
    .package(url: "https://github.com/stephencelis/SQLite.swift.git", from: "0.15.3")
]