Hi @Vineet S
Thank you for your question and using the Microsoft Q&A platform.
Azure Data Factory (ADF) supports a wide range of functions that can be used in expressions. Here are some of the categories of functions supported by ADF:
- String Functions: These functions perform operations on string data types. They include functions like concat, replace, split, length, etc.
- Conversion Functions: These functions are used to convert data from one type to another.
- Date Functions: These functions are used to manipulate and format date and time values.
- Logical Functions: These functions perform logical operations and include functions like and, or, not, etc.
- Math Functions: These functions perform mathematical operations.
Please refer to the below related documents for more help:
https://learn.microsoft.com/en-us/azure/data-factory/control-flow-expression-language-functions
https://learn.microsoft.com/en-us/azure/data-factory/how-to-expression-language-functions
In the below screenshot, I have selected the "Length" function. It returns the number of items in a string or array.
![User's image](https://learn-attachment.microsoft.com/api/attachments/de397585-188e-44a7-b7a7-7d643826ec69?platform=QnA)
Hope this helps. Do let us know if you any further queries.
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