Queries with simple arithmetic expressions don't work

[jvshahid]

select (-1 * value) from series doesn't work

[bbinet]

The exact query I did was:

select (-1 * value) from series limit 100;

(because it would have fetch way too much data)

This query fails with the following syntax error:

ERROR: Error at -2119014655:9. syntax error, unexpected INT_VALUE, expecting DURATION

And the query:

select (2 * value) from series limit 100;

returns no result.