Resolving Type Mismatch Warning in ADF

Question

I'm incorporating an If Condition in my ADFv2 Pipeline, contingent on the output of an activity. I'm checking if a file is downloaded, and if affirmative, I aim to load the table with the downloaded file.

The expression is formulated as follows:

@{equals(activity('RunFunction').output.files[1].Downloaded, true)}

However, I'm encountering the following warning:

The expression of type 'String' does not match the field 'expression'.

Thanks

Answer 1

Hello Glasier-3173

Are you using it directly on if? or trying to assign to a variable?

If you are directly using it on If condition, it will not say that warning, (Note the the curly braces at the outermost is not required). This is because, If condition expression should evaluate to true or false and your expression involving equals should work fine.

@equals(activity('RunFunction').output.files[1].Downloaded, true)

If you are trying to assing to a string variable, use the below expression

@string(equals(activity('RunFunction').output.files[1].Downloaded, true))

This will be converting the equals output (true or false) to a string and that can be assigned to a variable of type string.

Hope it is clear. Please try and let us know.