MySQL create procedure example
Here is an example of creating a stored procedure in MySQL.
- First connect to MysQL server using below command.
mysql -u root -p
The command mysql -u root -p
is used to connect to a MySQL database server as the root user from the command line interface.
-
Choose batabase using
use mydb;
statement if already exist or create new one usingcreate database mydb;
. -
Change delimiter from ; to //
delimiter //
- Create procedure using below sql statement.
create procedure calculate_tax(in subtotal decimal(10,2), out total decimal(10,2), inout tax_rate decimal(10,2) ) begin declare tax decimal(10,2); set tax = subtotal * (tax_rate / 100) ; set total = subtotal + tax ; if subtotal > 1000 then set tax_rate = 10; end if ; return total, tax_rate; end //
- Call the procedure
call calculate_tax(1000, @total, @tax_rate);
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