I use negate - why this not worked? воскресенье, 8 марта 2015 г., 23:15:49 UTC+3 пользователь Niphlod написал: > > booleans in T-SQL are not treated the same way as python..... in T-SQL, > NULL values are neither True or False, they are just NULL. > > So, if you want closed either None or False, you should do > > ((db.progs.closed == None) | (db.progs.closed == False)) > > one shortcut to it would be > > db.progs.closed.belongs((None, False)) > > that'll turn this syntax to the previous one, effectively selecing both > None and False values. > > On Sunday, March 8, 2015 at 7:23:54 PM UTC+1, Dmitry Ermolaev wrote: >> >> db((db.progs.promo==True) & (db.progs.closed!=True)).select(): >> or >> db((db.progs.promo==True) & ~(db.progs.closed==True)).select(): >> >> >> not worked (( >> if exist record wirh promo=True and closed=None or False - it not >> selected! >> >
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