Difference between GETDATE() vs SYSDATETIME() vs GETUTCDATE() in SQL Server

One of the common question on Microsoft SQL Server interview is, what is the difference between GETDATE(), SYSDATETIME(), and GETUTCDATE(). Even though all three SQL Sever function returns the current date time in SQL Server, there are some subtle differences between them. The main difference between GETDATE() and SYSDATETIME() is that GETDATE returns current date and time as DATETIME but SYSDATETIME returns a DATETIME2 value, which is more precise. The difference between GETDATE() and GETUTCDATE() is in timezone, the GETDATE() function return current date and time in the local timezone, the timezone where your database server is running, but GETUTCDATE() return current time and date in UTC (Universal Time Coordinate) or GMT timezone.
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