机器实际产能

公式：(机器实际上班时间 - 停机时间) / 机器实际加工时间 * 标准夹具数

CREATE FUNCTION [dbo].[udf_ActualCapacity]
(
    @MachineId SMALLINT,
    @OperatorDate DATETIME 
)
RETURNS decimal(18,6) 
AS
 BEGIN
    DECLARE @ReturnValue DECIMAL(18,6)
    
    --取得机器实际上班时间
    DECLARE @WorkTime DECIMAL(18,6)
    SELECT @WorkTime  = (SELECT SUM([WorkTime]) FROM [dbo].[udf_WorkTicketData_1]() WHERE [MachineId] = @MachineId AND [OperatorDate] = @OperatorDate)
    
    --取得机器停机时间
    DECLARE @MachineHaltTime DECIMAL(18,6)
    SELECT @MachineHaltTime = (SELECT SUM([MachineHaltTime]) FROM [dbo].[udf_WorkTicketData_1]() WHERE [MachineId] = @MachineId AND [OperatorDate] = @OperatorDate) 
    
    --计算机器运作时间
    DECLARE @RealWorkTime DECIMAL(18,6)
    SELECT @RealWorkTime = (ISNULL(@WorkTime,0) * 3600 - ISNULL(@MachineHaltTime,0) * 60)
    
    --机器实际加工时间    
    DECLARE @ProcessTime DECIMAL(18,6)
    SELECT @ProcessTime = (SELECT (AVG(ISNULL([ProcessTime],0))) FROM dbo.udf_WorkTicketData_1() WHERE [MachineId] = @MachineId AND [OperatorDate] = @OperatorDate)
    
    --从机器参数表，取得机器的标准夹具数
    DECLARE @StandJigNumber TINYINT
    SELECT @StandJigNumber = (SELECT [JigNumber] FROM [MachineParameter] WHERE [MachineId] = @MachineId AND  (YEAR([MonthName])= YEAR(@OperatorDate)) AND (MONTH([MonthName]) = MONTH(@OperatorDate)))
    
    --计算机器实际产能
    SELECT @ReturnValue=(CASE WHEN @ProcessTime = 0 THEN NULL  WHEN @ProcessTime IS NULL THEN NULL  WHEN @ProcessTime <> 0 THEN ((ISNULL(@RealWorkTime,0) / @ProcessTime) * ISNULL(@StandJigNumber,0)) END)
    RETURN @ReturnValue
 END