Is there any difference in performance between the operator IS NULL and the function ISNULL()?
Is there any difference in performance between the operator IS NULL and the function
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Is there any difference in performance between the operator IS NULL and the function ISNULL()?
Looking into the MySQL manual, they seem to be synonyms really.
MySQL manual on
IS NULLMySQL manual on
ISNULL()and even if they aren’t, I would tend to trust the query optimizer to pick the best solution.