修改groupby查询中的记录

Question

我正在为ToDo列表创建应用程序，并且那里有三个表。带有ToDos的表（“ tblToDo”），带有标签的表（“ tblLabels”）和映射表，其中每个ToDo可以具有一个或多个标签（“ tblToDoLabels”）。

我需要找到有两个具体标签的待办事项。因此，我使用了IN（）语句，但是找到了具有查找标签之一的记录，这就是为什么我使用GroupBy语句以及其他条件，即Item必须在表中两次的原因。效果很好，但现在我无法修改查询中的记录。有没有一种方法可以搜索我需要的数据，并且仍然能够修改查询中的记录？

这是我正在使用的查询的SQL：

extension NSFont {
  /**
   Will return the best font conforming to the descriptor which will fit in the provided bounds.
   */
  static func bestFittingFontSize(for text: String, in bounds: CGRect, fontDescriptor: NSFontDescriptor, additionalAttributes: [NSAttributedString.Key: Any]? = nil) -> CGFloat {
    let constrainingDimension = min(bounds.width, bounds.height)
    let properBounds = CGRect(origin: .zero, size: bounds.size)
    var attributes = additionalAttributes ?? [:]

    let infiniteBounds = CGSize(width: CGFloat.infinity, height: CGFloat.infinity)
    var bestFontSize: CGFloat = constrainingDimension

    for fontSize in stride(from: bestFontSize, through: 0, by: -1) {
      let newFont = NSFont(descriptor: fontDescriptor, size: fontSize)
      attributes[.font] = newFont

      let currentFrame = text.boundingRect(with: infiniteBounds, options: [.usesLineFragmentOrigin, .usesFontLeading], attributes: attributes, context: nil)

      if properBounds.contains(currentFrame) {
        bestFontSize = fontSize
        break
      }
    }
    return bestFontSize
  }

  static func bestFittingFont(for text: String, in bounds: CGRect, fontDescriptor: NSFontDescriptor, additionalAttributes: [NSAttributedString.Key: Any]? = nil) -> NSFont {
    let bestSize = bestFittingFontSize(for: text, in: bounds, fontDescriptor: fontDescriptor, additionalAttributes: additionalAttributes)
    // TODO: Safely unwrap this later
    return NSFont(descriptor: fontDescriptor, size: bestSize)!
  }
}

extension NSTextField {
  /// Will auto resize the contained text to a font size which fits the frames bounds.
  /// Uses the pre-set font to dynamically determine the proper sizing
  func fitTextToBounds() {
    guard let currentFont = font else {
      return
    }
    let text = stringValue
    let bestFittingFont = NSFont.bestFittingFont(for: text, in: bounds, fontDescriptor: currentFont.fontDescriptor, additionalAttributes: basicStringAttributes)
    font = bestFittingFont
  }

  private var basicStringAttributes: [NSAttributedString.Key: Any] {
    var attribs = [NSAttributedString.Key: Any]()

    let paragraphStyle = NSMutableParagraphStyle()
    paragraphStyle.alignment = self.alignment
    paragraphStyle.lineBreakMode = self.lineBreakMode
    attribs[.paragraphStyle] = paragraphStyle

    return attribs
  }
}