SELECT id, LAC, BSC, CI, site_name, site_type, site_cover_type, Repeater, BCCH,
longitude, latitude, direction, '前缀:anAttrOfCell'+纬度 AS anAttrOfCell
FROM FromBaseCell
longitude, latitude, direction, '前缀:anAttrOfCell'+纬度 AS anAttrOfCell
FROM FromBaseCell
longitude, latitude, direction, '前缀:'+cast(纬度 as varchar) AS anAttrOfCell
FROM FromBaseCell
如:cast(變量名 as 數據類型),convert(數據類型,變量名)'前缀:cast(變量名 as 數據類型)+纬度 AS anAttrOfCell
到幫助裡查看一下這兩個函數是什麼用的?