我该如何获取截日日期

Question

我想使用以下格式获取截断日期：

  

20190326

此代码在我的架构中：

 dateCreated: {
     
        type: Date,
        default: Date.now
    }

给出以下结果：

  

2019-03-26T01：05：43.778Z

Answer 1

使用Aggregation $dateToString

db.collection.aggregate([{
  $project: {
    date: {
      $dateToString: {
        format: "%d%m%Y",
        date: "$dateCreated"
      }
    }
  }
}])

您可以根据需要设置甲壳。 样本数据here。

Answer 2

这解决了它：

[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        Located 2 MSBuild instance(s)
            1: Visual Studio Community 2019 16.0.28714.193 - "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin"
            2: StandAlone 15.0 - "c:\Users\JPB\.vscode\extensions\ms-vscode.csharp-1.17.1\.omnisharp\1.32.8\msbuild\15.0\Bin"
[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        Registered MSBuild instance: Visual Studio Community 2019 16.0.28714.193 - "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin"