The TO_CHAR and TO_NUMBER do not seem like they are built-in functions in Microsoft SQL Server. In SQL Server, you would format it like this:SELECT ename, FORMAT(hiredate,'yyyyMMMMdd')
If you are indeed asking about the Oracle functions, I will defer answering that to other people who have familiarity with Oracle, which I do not possess at the moment.
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-- Yes, I am indeed a fictional character.