if (select count(*) from Relations where TableName='v_NonPayedServicesByContract' and ColName='BgNonPayedServiceWithDisc')<>0 then
Update Relations
SET  Function='SUM(BgNonPayedServiceWithDisc)',Suma='SUM(qrData.Дължима сума)'
where TableName='v_NonPayedServicesByContract' and ColName='BgNonPayedServiceWithDisc'
end if;