Azure Data Factory - Export data to sub container/blob - azure

Question

Hi I have an ADF that copies (exports Azure SQL data) CSV files to a blob.
How can I direct the the files - the destination to a 'sub' container
I have blob Named 'SQLdata' , I want the files to be create in sub-container/blob called customers
SQLdata/Customers
SQLdata/Customers/Cust1.csv
SQLdata/Customers/Cust2.csv
I have tried
"destination": {
"fileName": "Customers//Cust1.csv"
What is wrong with the following?
"activities": [
{
"name": "Export",
"type": "Copy",
"dependsOn": [],
"policy": {
"timeout": "7.00:00:00",
"retry": 0,
"retryIntervalInSeconds": 30,
"secureOutput": false,
"secureInput": false
},
"userProperties": [
{
"name": "Source",
"value": "dbo.#{item().source.table}"
},
{
"name": "Destination",
"value": "#{item().destination.fileName}"
}
],
"parameters": {
"cw_items": {
"type": "Array",
"defaultValue": [
{
"source": {
"table": "Cust1"
},
"destination": {
"fileName": "Cust1.csv"
}
},
{
"source": {
"table": "Cust2"
},
"destination": {
"fileName": "Cust2.csv"
}
},

Answer 1

I tried the same export and it works well, all the csv files is stored in containerleon/csv:
JSON code reference:
{
"name": "CopyPipeline_fls",
"properties": {
"activities": [
{
"name": "ForEach_fls",
"type": "ForEach",
"dependsOn": [],
"userProperties": [],
"typeProperties": {
"items": {
"value": "#pipeline().parameters.cw_items",
"type": "Expression"
},
"activities": [
{
"name": "Copy_fls",
"type": "Copy",
"dependsOn": [],
"policy": {
"timeout": "7.00:00:00",
"retry": 0,
"retryIntervalInSeconds": 30,
"secureOutput": false,
"secureInput": false
},
"userProperties": [
{
"name": "Source",
"value": "dbo.#{item().source.table}"
},
{
"name": "Destination",
"value": "containerleon/csv/#{item().destination.fileName}"
}
],
"typeProperties": {
"source": {
"type": "AzureSqlSource"
},
"sink": {
"type": "DelimitedTextSink",
"storeSettings": {
"type": "AzureBlobStorageWriteSettings"
},
"formatSettings": {
"type": "DelimitedTextWriteSettings",
"quoteAllText": true,
"fileExtension": ".txt"
}
},
"enableStaging": false
},
"inputs": [
{
"referenceName": "SourceDataset_fls",
"type": "DatasetReference",
"parameters": {
"cw_table": "#item().source.table"
}
}
],
"outputs": [
{
"referenceName": "DestinationDataset_fls",
"type": "DatasetReference",
"parameters": {
"cw_fileName": "#item().destination.fileName"
}
}
]
}
]
}
}
],
"parameters": {
"cw_items": {
"type": "Array",
"defaultValue": [
{
"source": {
"table": "test"
},
"destination": {
"fileName": "dbotest.csv"
}
},
{
"source": {
"table": "test3"
},
"destination": {
"fileName": "dbotest3.csv"
}
}
]
}
},
"annotations": []
},
"type": "Microsoft.DataFactory/factories/pipelines"
}
Storage preview:
Hope this helps.