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SQL code:
select * from tb
where cast(case ISNUMERIC(money) when 1 then money else
substring(money,1,patindex('%[ß¹-咗]%',money)-1) end as dec(18,2)) >= 4.5


SQL code:

select [money],Convert(float,SUBSTRING([money],0,CHARINDEX('Íò',[money]))) * 10000 as money1 from table1
where Convert(float,SUBSTRING([money],0,CHARINDEX('Íò',[money]))) * 10000 >90000



SQL code:

select [money],Convert(float,REPLACE([money],'Íò','')) * 10000 as money1
from table1
where Convert(float,REPLACE([money],'Íò','')) * 10000 >90000



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