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If you do, you'll have a problem at runtime. But -- and this is so important -- you'll be notified of the problem not when the null pointer is used, which could be a long way from the mistaken code ...
IS NULL and IS MISSING are predicates that test for a missing value. IS NULL and IS MISSING are used in the WHERE, ON, and HAVING expressions. Each predicate resolves to true if the sql-expression's ...
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