Using XML column in a where clause in SQL 2008
-
28-10-2019 - |
Question
I have a stored procedure in which I need to have a where clause that reads something like:
where XMLDataPoint <> NULL
However, XMLDataPoint is an XML column and I get an error
"The XML data type cannot be compared or sorted, except when using the IS NULL operator."
How should I structure my where clause?
Solution
NULL
requires using IS
or IS NOT
comparisons:
WHERE XMLDataPoint IS NOT NULL
NULL
is a state (of having an unknown or undetermined value), not a value itself, so equivalence operators don't apply.
Licensed under: CC-BY-SA with attribution
Not affiliated with StackOverflow