Use JSON_VALUE() for scalar JSON values if available or workaround weird JSON_EXTRACT() behavior in regards to null otherwise
#1899
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…ird JSON_EXTRACT() behavior otherwise.
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We will use
JSON_VALUE()for scalar JSON values from now on, because it seems to handlenullvalues correctly.JSON_EXTRACT()will return a string with the contents ofnullfor a JSONnullvalue instead of a SQLNULLvalue (see Bug #85755: JSON containing null value is extracted as a string "null").So when we have to depend on
JSON_EXTRACT(), we have to explicitly check for that specific case to ensure that the expected value is returned.Fixes #1897