Question

I would like to pass a value of a user-defined parameter to mysql console and use it as following:

example.sql:

    SELECT (@somevar + 1) as my_sum;

usage example:

C:>bin\mysql -utest -p --xml **{somehow @somevar:=100}** < example.sql
<?xml version="1.0"?>
<resultset statement="SELECT (@somevar + 1) as my_sum"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <row>
        <field name="my_sum" xsi:nil="true" />
    </row>
</resultset>

Is it possible?

Answer 1

C:>bin\mysql --init-command="SET @somevar:=100"

mysql> select @somevar;
+----------+
| @somevar |
+----------+
|      100 |
+----------+

---

Re your comment:

Yes, it’s odd that it’s not documented. But you can see it with mysql --help. You can also try it like I did, and see that it works.

I have logged a bug to ask for this option to be added to the manual.

http://bugs.mysql.com/bug.php?id=63672