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26 lip 2013 · In this situation you can use ISNULL() function instead of CASE expression . ISNULL(B.[STAT], C.[EVENT DATE]+10) AS [DATE]
11 lip 2012 · You should be able to accomplish this with the statement below. isnull(nullif(isnull(ID,'Y'),ID),'N') –
1 sie 2017 · You can check if a field or variable is equal to NULL because all comparisons to NULL return NULL (which in a CASE or IF predicate is taken as meaning false), so WHEN <FieldOrVariable> = NULL THEN <output> and WHEN <FieldOrVariable> <> NULL THEN <output> will never match.
The SQL CASE Expression. The CASEexpression goes through conditions and returns a value when the first condition is met (like an if-then-else statement). So, once a condition is true, it will stop reading and return the result. If no conditions are true, it returns the value in the ELSEclause.
17 maj 2013 · I settled on using the following approach: AND ((@BudgetFilter = 0 AND ISNULL(Project.Contribution, 0) >= 25000) OR (@BudgetFilter = 1 AND ISNULL(Project.Contribution, 0) < 25000) OR (@BudgetFilter = 2 AND ISNULL(Project.Contribution, 0) > 0))
To check if variable is null or empty use this: IF LEN(ISNULL(@var, '')) = 0 -- Is empty or NULL ELSE -- Is not empty and is not NULL
19 maj 2015 · How can i check for null or empty values for all the four parameters and then concatenate based on what is not null. If all you need is to concatenate the NOT NULL values, then simply concatenate them. Since NULL values would anyway be ignored. For example, 2 SELECT 'x', NULL, 'y', NULL FROM dual UNION ALL.
