How do you return a value from a stored procedure in MySQL?

How do you return a value from a stored procedure in MySQL?

To return a value from stored procedure, you need to use user defined session specific variable. Add @ symbol before variable name. Now second call for difference of two values. Call the stored procedure.

How do I return a SQL resultset from a stored procedure?

To create a stored procedure that returns result sets:

1. Use the DYNAMIC RESULT SETS clause in the CREATE/REPLACE PROCEDURE statement to specify the number of result sets the stored procedure returns.
2. Use a DECLARE CURSOR statement to declare a result set cursor for each result set the stored procedure returns.

How can we result from one stored procedure in another in MySQL?

If you want to return some select statement from your stored procedure, and want to use these values, you can either hold them ia temp table or simply uses as a select query. This will set the two output params from MyStoredProcedure and also insert the values that you pass from MyStoredProcedure as a select statement.

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

Option 1: Put this in your procedure to print ‘comment’ to stdout when it runs. 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);

How many values can a stored procedure return?

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. If you are not familiar with INOUT or OUT parameters, check it out the stored procedure’s parameters tutorial for the detailed information.

Does stored procedure return value?

A stored procedure does not have a return value but can optionally take input, output, or input-output parameters. A stored procedure can return output through any output or input-output parameter.

Can a stored procedure return a table?

You can’t technically return “a table”, but you can return a result set and using INSERT INTO .. EXEC syntax, you can clearly call a PROC and store the results into a table type.

How do you call a stored procedure in another stored procedure?

Executing SQL Stored Procedure from Another Stored Procedure

1. create procedure Sp_insert.
2. (
3. @ID int,
4. @TempName varchar(max)
5. )
6. as.
7. begin.
8. Declare @SampleTable Table(id int, Name varchar(max))

Can I call stored procedure in select statement?

Stored procedures are typically executed with an EXEC statement. However, you can execute a stored procedure implicitly from within a SELECT statement, provided that the stored procedure returns a result set.

How do I initialize a variable in MySQL?

Declaring variables

1. First, specify the name of the variable after the DECLARE keyword. The variable name must follow the naming rules of MySQL table column names.
2. Second, specify the data type and length of the variable.
3. Third, assign a variable a default value using the DEFAULT option.