-- What it does: Shows why NULL cannot be compared using = or != -- Why use it: Prevents common beginner mistake ...
I want to get a backgroundRefreshInterval, either from the channel if present, otherwise from the directory if present and if both are null, I want to have a non-null default value that I pass into ...
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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