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26 lip 2013 · I'm trying to do an IF statement type function in SQL server. Where there is a NULL in the field, I want it to take a field from one of the tables and add 10 days to it. And if possible create another column and add the 30 days.
15 mar 2013 · You need to check for null explicitly: SELECT CASE WHEN last_name is NULL THEN first_name ELSE first_name + ' ' + last_name
3 wrz 2024 · CASE can be used in any statement or clause that allows a valid expression. For example, you can use CASE in statements such as SELECT, UPDATE, DELETE and SET, and in clauses such as <select_list>, IN, WHERE, ORDER BY, and HAVING. Transact-SQL syntax conventions. Syntax for SQL Server, Azure SQL Database and Azure Synapse Analytics. syntaxsql. Copy
11 lip 2012 · CASE WHEN (ID IS NULL) THEN 'YES' ELSE 'NO' END AS ID_Value, I only have access to 2008 right now, but I'd hope that this syntax would still work in 2005 (seems like something that would be part of the original definition of CASE).
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.
How do you check for NULL in a CASE statement, when you're using a Scalar Function? My original query was ... but it fails. SELECT CASE dbo.fnCarerResponse ('') WHEN NULL THEN 'Pass' ELSE 'Fail' END. I read the SO question about using IS NULL, like so ...
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.
