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Handling NULLs in sql

Handling NULLs

Handling NULLs ISNULL() and COALESCE() functions are used to handle NULLs when combining data from different tables. ISNULL() and COALESCE() functions are commonly used functions that return first value that is not NULL among their inputs. ISNULL(): The ISNULL() function return first value that is not null among their input. It

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