Solve the beginner's problem of returning parameters from SQL stored procedures in the program!

Novice question about sql stored procedure returning program parameters!

In order to help players who have not yet cleared the level, let us learn about the specific puzzle solving methods.

@a varchar(50)

AS

declare @number int

Let's find out how to solve this puzzle. We can use the following code to count the total number of records named @a: SELECT @number=COUNT(*) FROM tb WHERE name=@a. This code will help us get the desired result.

This sentence means outputting the variable @number in the query analyzer.

return @number - This line of code returns a numeric value. If you are not using a front-end program, just the database, you can delete it.

This way your front-end program can receive the value of @number

If you have already created a deposit process, change it to

alterPROCEDURE P

@a varchar(50)

AS

declare @number int

Let's find out how to solve this puzzle. We can use the following code to count the total number of records named @a: SELECT @number=COUNT(*) FROM tb WHERE name=@a. This code will help us get the desired result.

This sentence means outputting the variable @number in the query analyzer.

return @number - This line of code returns a numeric value. If you are not using a front-end program, just the database, you can delete it.

How to call a stored procedure that inputs and outputs parameters

SQL stored procedure output parameters:

In order to help everyone understand better, the specific steps and methods for creating stored procedures will be introduced below.

USE [Message]

GO

/****** Stored procedure: [dbo].[Read external database query] Script date: 10/24/2012 05:39:16 ******/ Here, we will introduce a stored procedure named [dbo].[Read external database query], which can help us read the query results of the external database. This stored procedure can be executed in your database management tool to obtain the required data.

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

In order to help players who have not passed the level yet, let us learn about the specific puzzle solving methods. Here are some tips to help you pass the levels: 1. Observe the environment carefully: The details and background in the level may contain important clues and hidden items. Take a closer look at everything around you and you may uncover some key information. 2. Try different combinations: If you come across a combination lock or mechanism that requires a combination, don't be afraid to try different combinations. Sometimes, trial and error is the key to finding the right answer.

In order to help players who have not passed the level yet, let us learn about the specific puzzle solving methods.

In order to help everyone understand better, let us learn about the specific puzzle solving methods.

@bj1 int out -- input and output parameters

AS

BEGIN

In order to help you understand better, I will introduce you to the specific puzzle-solving methods. In the game, we need to execute the following SQL statement to count the number of IDs in the table: SELECT @bj1=count(Id) from sss. The function of this statement is to store the number of IDs in the sss table in the variable @bj1. Through this method, we can better solve the problem and help players successfully pass the level.

END

To help players who have not yet passed the levels, here are some detailed instructions on how to solve the puzzles. let's figure it out together!

USE [Message]

Let’s learn about the specific puzzle solving methods. In order to help players who have not passed the level yet, I have shared the following step-by-step guide. Don't forget to execute "DECLARE @return_value int" before starting. Hope these methods can be helpful to everyone!

In order to help players who have not passed the level yet, let us learn about the specific puzzle solving methods. If you encounter difficulties, you can try executing the following command: EXEC [dbo].[Database query] '1231', @return_value output. This command may help you get further clues or answers. come on!

SELECT @return_value

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