How do you display the value of a variable in a stored procedure in MySQL?

Posted on by Muna Meyer

How do you display the value of a variable in a stored procedure in MySQL?

SELECT ‘Comment’; Option 2: Put this in your procedure to print a variable with it to stdout: declare myvar INT default 0; SET myvar = 5; SELECT concat(‘myvar is ‘, myvar); This prints myvar is 5 to stdout when the procedure runs.

How do you get the output of a stored procedure in a variable in SQL Server?

In SQL Server Management Studio (SSMS), expand Programmability > Stored Procedures, right click a stored procedure and select Execute Stored Procedure. In the execute procedure page, enter the parameter @CustID value as 10 and click OK. It returns the following T-SQL statement with a variable @return_value.

How many values can be returned from a stored procedure in MySQL?

MySQL stored function returns only one value. To develop stored programs that return multiple values, you need to use stored procedures with INOUT or OUT parameters.

How do I print output in MySQL?

For debugging info from stored procedure in MySQL,there are following options through which you can do this.

  1. Write into the file externally:
  2. Use select command to print message:
  3. Use select command to print additional information with message:
  4. Create addition table temp and push all message into it:

Where are variables stored in MySQL?

You can store a value in a user-defined variable in one statement and refer to it later in another statement. This enables you to pass values from one statement to another. User variables are written as @ var_name , where the variable name var_name consists of alphanumeric characters, . , _ , and $ .

How can we create stored procedure with output parameter in SQL Server?

SQL Server – How to Write Stored Procedures With Output…

  1. First, initialise a variable of same datatype as that of the output parameter. Here, we have declared @EmployeeTotal integer variable.
  2. Then pass the @EmployeeTotal variable to the stored procedure.
  3. Then execute the stored procedure.

Can we have two output parameter in stored procedure?

You don’t need to do anything for the output parameters to be returned. (Also, you can only use one return statement, and you can only return integer values. You would use a parameter with the direction ReturnValue to get that returned value.)

How do you declare a variable in a stored procedure?

As a counter either to count the number of times a loop is performed or to control how many times the loop is performed.

  • To hold a data value to be tested by a control-of-flow statement.
  • To save a data value to be returned by a stored procedure return code or function return value.

    • How to rename a stored procedure in MySQL?

    Log in to cPanel.

  • In the Databases section,click MySQL Databases.
  • A new page will open. Scroll down to the database you want to rename and select the Rename link under the Actions column.
  • Type the new database name,then click Proceed.

    • How do you use variables in a MySQL Query?

    We can declare a variable in MySQL with the help of SELECT and SET command. Before declaring a variable we need to prefix the symbol ‘@’ The syntax is as follows − The symbol ‘@’ tells that it is a user defined variable or not. If there is no symbol, that would mean it is a local variable.

    How to declare a variable in MySQL?

    Declare a user-defined variable

  • Declare a local variable
  • Declare a system variable