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declare @i int
declare @j int
set @i = 100
set @j = 9
select cast(@i as float)/@j
select *
from [Table]
where 日期 in(1,4,5,17) and 属性2*1.0/属性1>0.6
select * from tab where 日期 in (1,4,5,17) and (cast(属性2 as float)/属性1) > 0.6