how to use Lookup activity and if activity together - azure

Question

i have a file on storage account emp.csv that contains. i want that from storage account a file and b file would go to database table.
emp_id,filename
1,a
2,b
3,anubhav
so for this i pass emp.csv file on lookup activity as source dataset then i use foreach activity
Inside foreach activity i used a if condition on expression
#equals(item().filename,'anubhav' )
if this expression is true then wait activity will come and wait for 1 sec. if this expression false then
but this pipeline is failing

Answer 1

The pipeline is failing because inside copy activity dataset properties it should be a string, but you have given it as an array value #activity('Lookup1').output.value. because of that, you getting an error.
Try to replace the array value with the string #item().filename as you can see, I reproduce the same thing in my environment and got this output.
You can use this Json pipeline activity
{
"name": "pipeline1",
"properties": {
"activities": [
{
"name": "Lookup1",
"type": "Lookup",
"dependsOn": [],
"policy": {
"timeout": "0.12:00:00",
"retry": 0,
"retryIntervalInSeconds": 30,
"secureOutput": false,
"secureInput": false
},
"userProperties": [],
"typeProperties": {
"source": {
"type": "DelimitedTextSource",
"storeSettings": {
"type": "AzureBlobStorageReadSettings",
"recursive": true,
"enablePartitionDiscovery": false
},
"formatSettings": {
"type": "DelimitedTextReadSettings"
}
},
"dataset": {
"referenceName": "DelimitedText1",
"type": "DatasetReference"
},
"firstRowOnly": false
}
},
{
"name": "ForEach1",
"type": "ForEach",
"dependsOn": [
{
"activity": "Lookup1",
"dependencyConditions": [
"Succeeded"
]
}
],
"userProperties": [],
"typeProperties": {
"items": {
"value": "#activity('Lookup1').output.value",
"type": "Expression"
},
"isSequential": true,
"activities": [
{
"name": "If Condition1",
"type": "IfCondition",
"dependsOn": [],
"userProperties": [],
"typeProperties": {
"expression": {
"value": "#equals(item().filename, 'anubhav.csv')",
"type": "Expression"
},
"ifFalseActivities": [
{
"name": "Copy data1",
"type": "Copy",
"dependsOn": [],
"policy": {
"timeout": "0.12:00:00",
"retry": 0,
"retryIntervalInSeconds": 30,
"secureOutput": false,
"secureInput": false
},
"userProperties": [],
"typeProperties": {
"source": {
"type": "DelimitedTextSource",
"storeSettings": {
"type": "AzureBlobFSReadSettings",
"recursive": true,
"enablePartitionDiscovery": false
},
"formatSettings": {
"type": "DelimitedTextReadSettings"
}
},
"sink": {
"type": "DelimitedTextSink",
"storeSettings": {
"type": "AzureBlobFSWriteSettings"
},
"formatSettings": {
"type": "DelimitedTextWriteSettings",
"quoteAllText": true,
"fileExtension": ".txt"
}
},
"enableStaging": false,
"translator": {
"type": "TabularTranslator",
"typeConversion": true,
"typeConversionSettings": {
"allowDataTruncation": true,
"treatBooleanAsNumber": false
}
}
},
"inputs": [
{
"referenceName": "abcsv",
"type": "DatasetReference",
"parameters": {
"file": {
"value": "#item().filename",
"type": "Expression"
}
}
}
],
"outputs": [
{
"referenceName": "DelimitedText2",
"type": "DatasetReference",
"parameters": {
"file": {
"value": "#item().filename",
"type": "Expression"
}
}
}
]
}
],
"ifTrueActivities": [
{
"name": "Wait1",
"type": "Wait",
"dependsOn": [],
"userProperties": [],
"typeProperties": {
"waitTimeInSeconds": 1
}
}
]
}
}
]
}
}
],
"annotations": []
}
}
Pipeline successfully executed