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How do you SET a variable in a case statement in SQL?
So you need to use ELSE, i.e.: IF (@check = ‘abc’) SET @var1 = @value ELSE IF (@check = ‘def’) SET @var2 = @value ELSE IF (@check = ‘ghi’) SET @var3 = @value ELSE IF (@check = ‘jkl’) SET @var4 = @value ELSE IF (@check = ‘mno’) SET @var5 = @value […]
Can we use variable in case statement?
The value for a case must be a constant or a literal. Variables are not allowed. In case, if it is not at the end, then a break statement must be kept after the default statement to omit the execution of the next case statement.
Can we initialise variable in switch case?
If a programmer declares variables, initializes them before the first case statement, and then tries to use them inside any of the case statements, those variables will have scope inside the switch block but will not be initialized and will consequently contain indeterminate values.
Can we initialize a variable in switch case?
Declaring a variable inside a switch block is fine. Declaring after a case guard is not. If your code says “int newVal=42” then you would reasonably expect that newVal is never uninitialised.
Can I use a select statement in a CASE statement?
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.
How to set a variable in case statement?
Code should be in Standard SQL as much as possible and not local dialect. This is minimal polite behavior on SQL forums. What little you did post is awful. We do not use #temp files to mimic punch cards. We do not mix XML and SQL. CASE is an expression and not a control flow statement.
How to use the result of a case statement?
I need to use the result of the of my CASE statement to use in another CASE statement. I’m doing this in SQL Server. Would be very grateful for help.
When to use if or else in case statement?
If your real logic is more complicated (e.g. need to set multiple variables inside a condition) look at IF ELSE instead. CASE is an expression not a flow of control construct. Thanks for contributing an answer to Stack Overflow!
How to set a variable subject to values from joined tables?
This is the place for advice and discussions 1 2 I haven’t found a way to SET a variable subject to values from joined tables. Any ideas? @ClientID is passed as a parameter. You can assign the variable value directly with a SELECT statement or using a subquery: