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Don't send email if the flow body is empty

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Posted on by Biswapati Microsoft Employee

Hi,

I have created a Flow to call the kusto function and email the kusto object as Bar chat. But I don't want to send an email if the kusto function return null or empyt. How to validate this. I have put the condition expression before sending email and try but didn't work as expected. Please let me know how to validate it. Any help will be appreciated.

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v-xida-msft Microsoft Employee on at

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Hi @Biswapati,

Which connector do you use in your “Run query and visual results” action?

I don’t find the connector on my Microsoft Flow, so I could not make a test on my side.

According to the screenshot that you provided, please take a try to type the following formula in Condition box:

@empty(body('Run_query_and_visualize_results'))

Best regards,

Kris

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Biswapati Microsoft Employee on at

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Thanks for reply,
The connector is "Kusto - Run query and visualize results ". I have tried the expression @empty(body('Run_query_and_visualize_results')). But it's always return false whether the "Kusto - Run query and visualize results" return data or not. I have tried follwoing option that didn't work for me :
@contains(body('Run_query_and_visualize_results')?['body'], 'com.microsoft')
empty(item()?['appId'])
@and(empty(item()?['appId']), empty(item()?['standardDeviationRate']))
@and(empty(item()?['appId']), empty(item()?['standardDeviationRate']))
@empty(body('Run_query_and_visualize_results')?['body'])
@equals(body('Run_query_and_visualize_results')?['body'], '')
@equals(body('Run_query_and_visualize_results'), '')
@contains(body('Run_query_and_visualize_results'), 'com.microsoft')
@empty(body('Run_query_and_visualize_results'))
@not(empty(body('Run_query_and_visualize_results')['body']))
@contains(coalesce(body('Run_query_and_visualize_results')['body'], ''), 'com.microsoft')
@empty(coalesce(body('Run_query_and_visualize_results')['body'], ''))
Error-:
InvalidTemplate. Unable to process template language expressions for action 'Condition' at line '1' and column '2168': 'The template language expression 'not(empty(body('Run_query_and_visualize_results')['appId']))' cannot be evaluated because property 'appId' doesn't exist, available properties are 'attachmentName, attachmentContent, body'. Please see https://aka.ms/logicexpressions for usage details.'.

@not(empty(body('Run_query_and_visualize_results')['body']['appId']))
Error-:
InvalidTemplate. Unable to process template language expressions for action 'Condition' at line '1' and column '2168': 'The template language expression 'not(empty(body('Run_query_and_visualize_results')['body']['appId']))' cannot be evaluated because property 'appId' cannot be selected. Property selection is not supported on values of type 'String'. Please see https://aka.ms/logicexpressions for usage details.'.

Thanks
Biswapati

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Biswapati Microsoft Employee on at

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Can anyone please help me on resolve this issue. Even I can change to Html table instead of Bar chart. Please let me know the solution for both Html Table & bar chart.

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Biswapati Microsoft Employee on at

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Can anyone help me to resolve this issue. This issue is still open.

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ccollins 10 on at

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Did you ever find a solution to this? I'm having the same problem.

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Biswapati Microsoft Employee on at

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Yes, Below expression work for me :

@empty(body('Run_query_and_list_results')?['value'])

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ccollins 10 on at

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I'm getting the following error:

InvalidTemplate. Unable to process template language expressions for action 'Does_user_exist' at line '1' and column '2223': 'The template language expression 'empty(body('Search_for_users')?['value'])' cannot be evaluated because property 'value' cannot be selected. Array elements can only be selected using an integer index. Please see https://aka.ms/logicexpressions for usage details.'.

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Biswapati Microsoft Employee on at

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Run the flow and see the output by cliking on the "Search for users" action. Replace the 'Value' with the item that you are getting inside the Body as below (For your reference). I have used 'empty(body('Search_for_users')?['value'])' and working for me. If it's not working then I am just the beginner of the flow. You can post your question in the group. Someone ight help you.

Example:

Body
{
"value": []
}

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