>I did the following: > >select first 1 cast(d_ein || ' ' || z_ein as timestamp) as tmp from >t_zeitschaltuhr order by tmp into :tmp_next_e; > >select first 1 cast(d_aus || ' ' || z_aus as timestamp) as tmp from >t_zeitschaltuhr order by tmp into :tmp_next_a; > >d_ein is a date, z_ein a time, I would like a timestamp and get the next after >now. (Time to switch the machine next >time off and on:
>This time should be the next in the future, so I thought: where tmp > 'now' >, but I can't use the alias for the condition. What can I do? If you're on a recent Firebird version, Olaf, you can do something like: with TmpTable(tmp) as (select cast(d_ein || ' ' || z_ein as timestamp) as tmp from t_zeitschaltuhr where d_ein >= current_date) select tmp from TmpTable where tmp > 'now' order by tmp rows 1 HTH, Set
