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Stored Procedure - ['Table1'] is of type 'Null'

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Posted on by michaelwoodew

I am successfully executing a stored proceedure via teh data gateway within a flow. it is returning a row of data which I am also successfully parsing from JSON to an object using the "Parse JSON" action.

The "Table1" field is showing as an array of objects

{
 "Table1": [
 {
 "key1": 123,
 "key2": 456
 }
 ]
}

However when I try to iterate this array with an "Apply to each" action, the flow errors with:

"The execution of template action 'Apply_to_each' failed: the result of the evaluation of 'foreach' expression '@body('Parse_JSON')?['ResultSets']?['Table1']' is of type 'Null'. The result must be a valid array."

I have tried array(body('Parse_JSON')?['ResultSets']?['Table1'])

I can see the data, how can I process it if flow believes "Table1" is null?

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Using flows

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yashag2255 24,769 Super User 2024 Season 1 on at

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Hi @michaelwoodew

Can you please share the following details:

1. Schema that you are using the parse json action

2. A screenshot of what you are getting in the run history of teh Parse JSON action.

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v-bacao-msft on at

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Hi @michaelwoodew ,

Please check whether Body of Execute stored procedure action contains property-Table1.

Or check if Body of Parse JSON contains Table1 property.

Parse JSON is suitable for parsing JSON data with fixed properties. The properties name is not dynamically changed.

For example, the following data is used to generate Schema, but the parsed content does not contain Table1 at the end, so there will be problems when referring.

{ "Table1": [ { "key1": 123, "key2": 456 } ] }

Image reference:

Best Regards,

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michaelwoodew 14 on at

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Hi @v-bacao-msft,

Thanks for your guide,
I can confirm that the JSON Schema is set Expecting the exact Table1 structure that the procedure returns and shows a successful output.

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v-bacao-msft on at

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Hi @michaelwoodew ,

You can try to store the content that needs to be configured in Content field in an Object variable, and then populate the variable in Content field.

Best Regards,

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michaelwoodew 14 on at

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Thanks @v-bacao-msft
Your suggestion pointed me to a working work-around.

I'm passing ResultSet from the stored proceedure into an object var, then JSON Parsing that (aleady) object. The JSON Parse is so that I can provide it with a schema so that I can easily select the values in the foreach in later steps.

Thanks

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