sql的AVG如何实现保留一位小数(数据库里为int型)?
select b.unitCode,b.unit,AVG(b.age*1.0) avgAge from (select ((2015-SUBSTRING(birthday,0,5))*12+(3-SUBSTRING(birthday,5,2)))/12 as age
,a.* from TRT_CADRES a) b where unit is not null group by b.unitCode,b.unit
AVG(b.age*1.0)
select case when avg(colname*1.0)=cast(avg(colname*1.0) as int) then avg(colname*1.0) else cast(avg(colname*1.0) as decimal(9,1)) end
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转载自ch-dj.iteye.com/blog/2191697
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