SQL Server: COALESCE function instead of CASE WHEN – ELSE

Instead of using long “select-case when-else” construction, we can use COALESCE function when we want to check if the value is NULL (this makes the code much shorter)

This is the long CASE WHEN construction:

WHEN (expression1 IS NULL) THEN 0
ELSE expression1

Here’s the use of COALESCE function


More info

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