Can't declare variable in Firebird 2.5, why?

Question

I have a one line query:

DECLARE VARIABLE var_SecondsOfTime INTEGER;

But after running the query I am getting this message:

Engine Error (code = 335544569): Dynamic SQL Error. SQL error code = -104. Token unknown - line 1, column 9. VARIABLE.

SQL Error (code = -104): Invalid token.

I've looked everywhere on the Internet and all examples showing the same declaration style which I am using.

What is wrong?

Answer 1

Firebird 2.5 supports execution of code blocks surrounded by a execute block statement, try this:

set term ^ ;

EXECUTE BLOCK 
AS
   DECLARE VARIABLE var_SecondsOfTime INTEGER;

BEGIN
  SELECT 1 from RDB$DATABASE into var_SecondsOfTime ;
END
^

set term ; ^

I issued the select because I'm pretty sure it is not possible to execute an empty block, try this by yourself removing the select.

Edit My original select was invalid for a block, I added the into clause to collect the result. I never used firebird maestro, but it now works perfectly on isql, as shown.