From the MySQL Manual - 14.1.7 SELECT Syntax:

From MySQL 4.1.0 on, you are allowed to specify DUAL as a dummy table name in situations where no tables are referenced:
mysql> SELECT 1 + 1 FROM DUAL;
        -> 2

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DUAL is purely a compatibility feature. Some other servers require this syntax.

Update: If DBD::SQLite does not support this yet, the author might want to consider adding support soon.

In reply to Re: Re: Re: DBD::SQLite by Mr. Muskrat
in thread Error querying DBD::SQLite by dragonchild

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