setupDatabase

  func setupDatabase() {
    NSLog("start setupDatabase")
    var rc: Int32
    var stmt: OpaquePointer?
    let createTableString = "CREATE TABLE Test (id INTEGER, field1 Char(255), field2 Char(255))"

    rc = sqlite3_prepare_v2(db, createTableString, -1, &stmt, nil)
    if rc == SQLITE_OK {
      rc = sqlite3_step(stmt)
      if rc != SQLITE_DONE {
        NSLog("'Test' table is not created: \(rc)")
        return
      }
    } else {
      NSLog("CREATE TABLE statement is not prepared: \(rc)")
      return
    }
    sqlite3_finalize(stmt)

    // Also working:
//    rc = sqlite3_exec(db, createTableString, nil, nil, nil)
//    if rc != SQLITE_OK {
//      NSLog("Execution of create table error: \(rc)")
//      return
//    }

    NSLog("✅ Table 'Test' created")
  }