mysql stored-procedure: out parameter

Unable to replicate. It worked fine for me:

mysql> CALL my_sqrt(4, @out_value);
Query OK, 0 rows affected (0.00 sec)

mysql> SELECT @out_value;
+------------+
| @out_value |
+------------+
| 2          | 
+------------+
1 row in set (0.00 sec)

Perhaps you should paste the entire error message instead of summarizing it.

You must have use correct signature for input parameter *IN is missing in the below code.

CREATE PROCEDURE my_sqrt(IN input_number INT, OUT out_number FLOAT)

I just tried to call a function in terminal rather then MySQL Query Browser and it works. So, it looks like I'm doing something wrong in that program...

I don't know what since I called some procedures before successfully (but there where no out parameters)...

For this one I had entered

CALL my_sqrt(4,@out_value);
SELECT @out_value;

And it results with an error:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT @out_value' at line 2

Strangely, if I write just:

CALL my_sqrt(4,@out_value); 

The result message is: "Query canceled"

I guess, for now I will use only terminal...