where子句中的Mysql標準沒有正確報告

Question

我有以下的Mysql查詢，它除了Sum部分之外工作得很好。我得到的結果是，Sum_IO和Sum_NIO被計算在整個表彷彿標準的一部分

Cast(oee_main_interim.TS As date) = CurDate()

被忽略。我要的是查詢只會總結（CURDATE（）），它歸入今天的日期值：

Select 
    oee_main_interim.NAME As Machine_ID, 
    oee_machinenames.Name As Name, 
    voee_mach_shifts.curr_Shift As curr_Shift, 
    Sum((oee_main_interim.Left_IO + oee_main_interim.Right_IO)) As Sum_IO, 
    Sum((oee_main_interim.Left_NIO + oee_main_interim.Right_NIO)) As Sum_NIO 
From 
    (oee_main_interim Join 
    voee_mach_shifts On voee_mach_shifts.ID = oee_main_interim.NAME) Join 
    oee_machinenames On oee_machinenames.ID = oee_main_interim.NAME 
Where 
    Cast(oee_main_interim.TS As date) = CurDate() And 
    oee_main_interim.Shift In (Select 
    voee_mach_shifts.curr_Shift 
    From 
    voee_mach_shifts Join 
    oee_machinenames On oee_machinenames.ID = voee_mach_shifts.ID 
    Group By 
    voee_mach_shifts.curr_Shift, oee_machinenames.ID 
    Order By 
    oee_machinenames.ID) 
Group By 
    oee_main_interim.NAME, oee_machinenames.Name, voee_mach_shifts.curr_Shift 
Order By 
    oee_system.oee_main_interim.NAME 

Answer 1

您可以使用DATE(yourfield)=CURDATE()只匹配時間戳或日期時間字段的日期部分。