Hi Samit,
mysql> select @toto
-> ;
+-------+
| @toto |
+-------+
| NULL |
+-------+
1 row in set (0.00 sec)
mysql> set @toto:=5;
Query OK, 0 rows affected (0.01 sec)
...
use @toto
...
mysql> set @toto:=NULL;
Query OK, 0 rows affected (0.00 sec)
mysql> select @toto;
+-------+
| @toto |
+-------+
| NULL |
+-------+
1 row in set (0.00 sec)
Selon samit jain <[EMAIL PROTECTED]>:
> Hi,
>
> A simple question. How to delete the user variables
> created on the server using set @varname=<expr>
> syntax?
>
> thanks,
>
> Samit
>
>
>
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