SQL 语句，类型转换

declare @f float;
declare @i int;
set @f = 123.789;
--set @i = convert(int, @f)
--set @i = cast(@f as int)

--set @i = ROUND(@f, 0, 1);//直接截取
set @i = ROUND(@f, 0); //四舍五入
select @i