How to call stored procedures in sqlserver

In this issue, the editor will bring you about how to call stored procedures in sqlserver. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

Recursion refers to the situation in which the code snippet calls itself; the danger is that if you call yourself once, how to prevent him from calling himself repeatedly. In other words, a recursive test is provided to ensure that you can jump out at the right time.

Take hierarchy as an example of recursive calls in stored procedures.

Recursion

CREATE PROC [dbo]. [usp_spFactorial] @ InputValue INT,@OuputValue INT OUTPUTASBEGIN DECLARE @ InValue INT; DECLARE @ OutValue INT; IF BEGIN SET @ InValue = @ InputValue-1; EXEC spFactorial @ InValue,@OutValue OUTPUT; SELECT @ OuputValue = @ InputValue * @ OutValue; END ELSE BEGIN SET @ OuputValue = 1; ENDEND

When you create this stored procedure, you will encounter a report message

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