How do you return a value within a 2D array in Azure Data Flows Open Expression Builder?

Question

Background: I have a CSV file with a column that has a list of tags for a given row. The tag list is not in any specific order and varies for each cell in the tags column. I am looking for the value for a row which matches the string "Owner". When pulling in the CSV file, the entire cell is 1 string per cell. An example cell in this column looks like following:

"Organization": "Microsoft", "Owner": "Eric Holmes", "DateCreated": "07/09/2021"

Goal: I would like to find a way in Azure Data Flows or Azure Data Factory to make a new column with a value for a specific key in a list.

Example:

Current Column

Tags
"Department": "Business", "Owner": "Karen Singh", "DateCreated": "09/20/2019"
"Owner": "Henry Francis", "AppName": "physics-engine", "Department": "GeospatialServices"
"Department": "Fashion", "DateCreated": "01/10/2015", "Owner": "Xiuxiang Long"

Desired Column

Owner
"Karen Singh"
"Henry Francis"
"Xiuxiang Long"

Work So Far : I have taken each string in the tags column split it into an array by breaking it apart and the commas (,). Then I have split each string at each index by the colon (:). This makes the values look like:

Tags
[["Department", "Business"], ["Owner", "Karen Singh"], ["DateCreated", "09/20/2019"]]
[["Owner", "Henry Francis"], ["AppName", "physics-engine"], ["Department", "GeospatialServices"]]
[[Department", "Fashion"], ["DateCreated", "01/10/2015"], ["Owner", "Xiuxiang Long"]]

To split the strings, I've used this open expression

mapIndex(split(replace(Tags, '"', ''), ','), split(#item, ':'))

Problems I am new to Open Expressions and Azure Data Factory and Data Flows. Does anyone know how I would:

1. Search for the desired tag like "Owner"
2. And return the value associated to it

Sorry I know this question sounds very simple but using only open expression functions makes this more convoluted than necessary. Additionally, if there is a better way to go about this problem I'd appreciate any input. I've been banging my head against the wall and any leads help. Thank you!

Answer 1

I have tried to repro it, could achieve it using Derived Column, where you could Split():

Use Derived Column transformation and use below expression:

split(split(tags,'"Owner":')[2],'"')[2]

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