As easily we use the if else statement in stored procedure to check the statement type and there after we perform the desired task. Same thing I want to do using switch case
There is no stored procedure posted in the above question description so considering this, your stored procedure can be
Create Proc Usp_SampleProcedure ( @InParam Int )As Begin Set Nocount On Select Case @InParam When 1 Then 'One' When 2 Then 'Two' When 3 Then 'Three' Else '...' End [Result] End Go
But I would like to advise., sql Case can be applied to one column and you can't put a query/statement within both "then" and "else" clause, Consider reading these article
I hope this helps, thanks
Here is the more explanation on SQL SWITCH case expression, Syntax for a simple Switch case statement is
CASE expression WHEN data1 THEN output1 WHEN data2 THEN output1 . . . WHEN dataN THEN outputN ELSE defaultStatement
Not only we can have an expression in SWITCH CASE but also a series of a boolean expression. See the sample below
CASE WHEN boolExpression1 THEN output1 WHEN boolExpression2 THEN output1 . . WHEN boolExpressionN THEN outputN ELSE defaultStatement
Example of the CASE statement
SELECT player_name, year, CASE WHEN year = 'SR' THEN 'yes' ELSE NULL END AS is_a_senior FROM benn.college_football_players
here’s the explanation of above example:
CASEstatement checks each row to see if the conditional statement—
year = 'SR'is true.
Here is the article based on SQL server stored procedure Understanding SQL server switch case (With Example) you can read it, it has all the details.
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