if (select count(*) from sys.syscolumns where tname='ServiceCredits' and cname='SpaTransferFlag')=0 then

alter table ServiceCredits
Add SpaTransferFlag integer default 0

end if

GO

COMMENT ON
COLUMN ServiceCredits.SpaTransferFlag
is '0 pokazva che spa uslugate ne e prehvarlena ot spa 1- spa uslugata e prehvarlena ot Spa'