>Andrea Galeazzi wrote: > > I've got a table T made up of only two fields: INT id (PRIMARY KEY) and > > INT length. > > I need a statement in order to yield 0 when the key doesn't exist. > >Well, "select 0;" fits your spec (you never said what should be >returned when the key does exist). I would hazard a guess that you >meant something like this: > >select coalesce((select length from T where id=?), 0);
Sorry to ask but isn't the following exactly the same, but even easier to read? select exists(select rowid from T where id=?); _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
