Azure data factory pass activity output to a dataset - azure-data-factory

Question

I am using a SQL Server query which would return the last 3 months since a customer last purchased a product. For instance, There's a customer 100 that last made a purchase in August 2022. The SQL query will return June, July, August. Which would be in the format 062022, 072022, 082022. Now I need to be able to pass these values to the Copy data activity REST api dataset Relative URL (/salemonyr/062022) in the ForEach activity.
So during the first iteration the Relative URL should be set to /salemonyr/062022 the second would be /salemonyr/072022 and third /salemonyr/082022.
Error: The expression 'length(activity('MonYear').output.value)' cannot be evaluated because property 'value' doesn't exist, available properties are 'resultSetCount, recordsAffected, resultSets, outputParameters, outputLogs, outputLogsLocation, outputTruncated, effectiveIntegrationRuntime, executionDuration, durationInQueue, billingReference
Script activity json:
{
"resultSetCount": 1,
"recordsAffected": 0,
"resultSets": [
{
"rowCount": 3,
"rows": [
{
"MonYear": 062022
},
{
"MonYear": 072022
},
{
"MonYear": 082022
}
]
}
],
"outputParameters": {},
"outputLogs": "",
"outputLogsLocation": "",
"outputTruncated": false,
"effectiveIntegrationRuntime": "",
"executionDuration": 0,
"durationInQueue": {
"integrationRuntimeQueue": 3
},
"billingReference": {
"activityType": "PipelineActivity",
"billableDuration": [
{
"meterType": "",
"duration": 0.016666666666666666,
"unit": "Hours"
}
]
}
}
How would I accomplish this to read the values dynamically from the SQL query.

Answer 1

You can use #split(item().colname,',')[0] , split(item().colname,',')[1] and split(item().colname,',')[2] in the relative URL path.
Check the below video for details:

Answer 2

You can use REST Dataset parameter and use it in the Relative URL.
Relative URL:
Give lookup output to ForEach. use your query in lookup.
Give this to ForEach and inside ForEach, in copy sink(REST DATASET) use the below expression for the dataset parameter.
/salemonyr/#{item().sample_date}
In source, you can give your source.
By this, you can copy the data to the respective Relative URL.