在Azure流分析中执行UNION操作后查找不同的值

时间:2019-05-10 11:44:32

标签: azure azure-stream-analytics stream-analytics

我正在使用UNION函数在Stream Analytics中运行查询。 我想获取查询结果的不同值。由于UNION在Azure流分析中允许重复,因此我得到的结果带有重复值。我也尝试过使用DISTINCT关键字,但是即使它不起作用。

下面是我尝试过的查询。

    WITH 
     ABCINNERQUERY AS (
     SELECT
        event.ID as ID,
        ABCArrayElement.ArrayValue.E as TIME,
        ABCArrayElement.ArrayValue.V as ABC
    FROM
        [YourInputAlias] as event
    CROSS APPLY GetArrayElements(event.ABC) AS ABCArrayElement
    ),
     XYZINNERQUERY AS (
      SELECT
        event.ID as ID,
        XYZArrayElement.ArrayValue.E as TIME,
        XYZArrayElement.ArrayValue.V as XYZ
    FROM
        [YourInputAlias] as event
    CROSS APPLY GetArrayElements(event.XYZ) AS XYZArrayElement
),
KEYS AS
(
    SELECT DISTINCT
        ABCINNERQUERY.ID AS ID, 
        ABCINNERQUERY.TIME as TIME
    FROM ABCINNERQUERY
        UNION 
    SELECT DISTINCT
        XYZINNERQUERY.ID AS ID, 
        XYZINNERQUERY.TIME as TIME
    FROM XYZINNERQUERY
)

SELECT
    KEYS.ID as ID,
    KEYS.TIME as TIME

INTO [YourOutputAlias] 
FROM KEYS

在上面的查询ID中,ID是唯一的,“时间”将是“时间”和“ ABC / XYZ”值的数组。

输入json文件如下。

[
{"ID":"006XXXXX",
"ABC":
[{"E":1557302231320,"V":54.799999237060547}],
"XYZ":
[{"E":1557302191899,"V":31.0},{"E":1557302231320,"V":55}],

{"ID":"007XXXXX",
"ABC":
[{"E":1557302195483,"V":805.375},{"E":1557302219803,"V":0}],
"XYZ":
[{"E":1557302219803,"V":-179.0},{"E":1557302195483,"V":88}]
]

没有重复的预期结果。

0 个答案:

没有答案