chill_notes/数据库/按日分组求均值.md

SELECT convert(char(10),aDatetime,120) ,round(avg([X]),6) ,round(avg([Y]),6) ,round(avg([Height]),6) FROM [ZHDMTProj].[dbo].[TLDZ1] group by ( convert(char(10),aDatetime,120)) order by ( convert(char(10),aDatetime,120))