Can this be happened? The functions TRY_CONVERT and TRY_CAST have been designed for handling errors and they should return NULL when there is an error.
But, it is not always true.
What is the reason? Although it returns NULL when an error occurred with the conversion, it does not happen if the conversion is not a permittable. The above code tries to convert an integer into an unique identifier that is not permitted, hence it fails with an error.
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