How to Use $0,$# in azure dataflow->DerivedColumn->Add column pattern.
Thanks for your help!
How to Use $0,$# in azure dataflow->DerivedColumn->Add column pattern.
Thanks for your help!
Hello @Isc2021 and welcome to Microsoft Q&A.
In building column patterns, $$ refers to the currently matched thing.
I do not see where you are getting $0,$# from. Could you please give an example?
Are you looking at expressions like toInteger('$123', '$###') ?
The data flow $ syntax represents dynamic pattern values.
$$ can be thought of as equivalent to "this" in other programming languages and is used in pattern matching to represent current row value.
$0 and $# are new constructs we just recently added to the data flow grammar. The docs should land next week.
You will be able to use $0 to represent current dynamic column names in column patterns. $# refers to the current column position.
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