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。