Question

查询日期类型的嵌套子文档并使用$ gte命令进行比较时遇到麻烦。

这是我的模式：

  a: {
    b: String,
    c: String,
    d: Date,
  },

这是我的猫鼬查找查询：

SomeModel.find(
      { a: { $elemMatch: { d: { $elemMatch: { $exists: true } } } } }, callback);

当我在数据库中肯定有至少一个满足此要求的对象时，我什么也没得到。我猜我的语法是错误的

Answer 1

使用dot notation-SELECT @Cols = STUFF((SELECT ',' +QUOTENAME(PRD_ValidDate) FROM #Table GROUP BY PRD_ValidDate ORDER BY PRD_ValidDate FOR XML PATH (''), Type).value('.','NVARCHAR(MAX)'),1,1,'') SELECT @ColsWithNoNulls = STUFF((SELECT distinct ',ISNULL(' + QUOTENAME(PRD_ValidDate) + ', 0) ' + QUOTENAME(PRD_ValidDate) FROM #Table GROUP BY PRD_ValidDate FOR XML PATH (''), Type).value('.','NVARCHAR(MAX)'),1,1,'') SET @Query = ' SELECT cardtype as [Card Type],' + @ColsWithNoNulls + ' FROM ( SELECT ISNULL(CAST(Cardtype AS VARCHAR(30)),''TOTAL'') CardType, ISNULL(SUM (AllEntries),0) as AllEntries, PRD_ValidDate FROM #Table GROUP BY cardtype, prd_Validdate WITH CUBE ) src PIVOT ( SUM(AllEntries) For PRD_ValidDate IN ('+@Cols+')) piv ORDER BY CASE WHEN (CardType=''TOTAL'')THEN 1 ELSE 0 END, CardType'

猫鼬查找嵌套子文档（日期类型）是否在日期间隔内

1 个答案: