sql之分組查詢

錯誤示例

select  PMId,GJTypeId,GJXHCode,GJMonomer,GJFloor,GJLong,GJWidth,GJHigh, convert(decimal(18,4),GJFL) AS GJFL,count(1) GJSum from GJ_ProjectGJ 
where PMId=2155 and GJMonomer='4#' and GJXHCode='YB48.24.1' 
group by PMId,GJTypeId,GJXHCode,GJMonomer,GJFloor,GJLong,GJWidth,GJHigh,GJFL

正確示例

select  PMId,GJTypeId,GJXHCode,GJMonomer,GJFloor,GJLong,GJWidth,GJHigh, convert(decimal(18,4),GJFL) AS GJFL,count(1) GJSum from GJ_ProjectGJ 
where PMId=2155 and GJMonomer='4#' and GJXHCode='YB48.24.1' 
group by PMId,GJTypeId,GJXHCode,GJMonomer,GJFloor,GJLong,GJWidth,GJHigh,convert(decimal(18,4),GJFL)

 一點小差池，會致使顯示的數據出現問題