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How to use and get output arguments in stored procedure using OUT parameter mode?

It is sometimes required to get the result of a stored procedure in a variable which can be used later or to output the result.

To do so, we can use the "OUT" parameter mode while defining stored procedures.

In the below section, we will be writing a stored procedure to get the square root of a number returned in an output variable provided by us.



Stored Procedure Definition:

Store the below stored procedure in a file named my_sqrt.sql and save it.

DELIMITER $$

DROP PROCEDURE IF EXISTS my_sqrt$$

CREATE PROCEDURE my_sqrt(inp_number INT, OUT op_number FLOAT)
BEGIN
    SET op_number=SQRT(inp_number);

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