Sql server 如何优化SQL查询？

这是我的程序，我认为这是一个长期没有优化。如何更好地优化短查询

以下是查询：

ALTER FUNCTION [dbo].[FuncBusReport] 
    (@startdate DATETIME,
     @enddate DATETIME,
     @top INT,
     @state INT)
RETURNS @BusTable TABLE 
        (
            [Id] [int] identity(1, 1) NOT NULL,
            [state] [nvarchar](50),
            [Price] [nvarchar](50),
            [ReserveType] [nvarchar](50),
            [ObjectIdDepartue] [int],
            [IssueDate] [nvarchar](50),
            [BankId] [int],
            [Confirmed] [bit],
            [TrackingCode] [nvarchar](50),
            [Transactionsuccess] [nvarchar](50),
            [Name] [nvarchar](128),
            [TiketUrl] [nvarchar](128),
            [ObjectIdReturn] [int] NULL,
            [TelNumber] [nvarchar](50) NULL
        )
AS
BEGIN
    IF (@state = 1)
        INSERT INTO @BusTable
            SELECT TOP (@top) 
                'ناموفق',
                [Price],
                'اتوبوس',
                [ObjectIdDepartue],
                [dbo].PersianDate(IssueDate) + ' ' + [dbo].[TimeOfDateTime](IssueDate),
                [BankId],
                [Confirmed],
                [TrackingCode],
                [Transactionsuccess],
                [dbo].[Profile].FirstName + ' ' + [dbo]. [Profile].LastName AS NAME,
                [dbo].GetUrlDownloads(4, [ObjectIdDepartue]),
                [ObjectIdReturn],
                [dbo].[payments].[TelNumber]
            FROM 
                [dbo].[payments]
            INNER JOIN 
                [dbo].[Profile] ON [dbo].[Profile].[UserId] = [dbo].[payments].UserId
            WHERE 
                [dbo].[Payments].[IssueDate] >= @startdate
                AND [dbo].[Payments].[IssueDate] <= @enddate
                AND [dbo].[payments].ReserveType = 4
                AND [dbo].[payments].[transactionsuccess] IN (0, 1)
                AND [dbo].[payments].[state] IN (1, 2)
    ELSE IF (@state = 3)
        INSERT INTO @BusTable
        SELECT TOP (@top) 
            'پرداخت موفق رزرو ناموفق',
            [Price],
            'اتوبوس',
            [ObjectIdDepartue],
            [dbo].PersianDate(IssueDate) + ' ' + [dbo].[TimeOfDateTime](IssueDate),
            [BankId],
            [Confirmed],
            [TrackingCode],
            [Transactionsuccess],
            [dbo].[Profile].FirstName + ' ' + [dbo].[Profile].LastName AS NAME,
            [dbo].GetUrlDownloads(4, [ObjectIdDepartue]),
            [ObjectIdReturn],
            [dbo].[payments].[TelNumber]
        FROM [dbo].[payments]
        INNER JOIN [dbo].[Profile] ON [dbo].[Profile].[UserId] = [dbo].[payments].UserId
        WHERE [dbo].[Payments].[IssueDate] >= @startdate
            AND [dbo].[Payments].[IssueDate] <= @enddate
            AND [dbo].[payments].ReserveType = 4
            AND [dbo].[payments].[state] IN (3, 5)
    ELSE IF (@state = 6)
        INSERT INTO @BusTable
        SELECT TOP (@top) 
            STATE,
            [Price],
            'اتوبوس',
            [ObjectIdDepartue],
            [dbo].PersianDate(IssueDate) + ' ' + [dbo].[TimeOfDateTime](IssueDate),
            [BankId],
            [Confirmed],
            [TrackingCode],
            [Transactionsuccess],
            [dbo].[Profile].FirstName + ' ' + [dbo].[Profile].LastName AS NAME,
            [dbo].GetUrlDownloads(4, [ObjectIdDepartue]),
            [ObjectIdReturn],
            [dbo].[payments].[TelNumber]
        FROM [dbo].[payments]
        INNER JOIN [dbo].[Profile] ON [dbo].[Profile].[UserId] = [dbo].[payments].UserId
        WHERE [dbo].[Payments].[IssueDate] >= @startdate
            AND [dbo].[Payments].[IssueDate] <= @enddate
            AND [dbo].[payments].ReserveType = 4
            AND [dbo].[payments].[state] = 6
    ELSE IF (@state = 4)
        INSERT INTO @BusTable
        SELECT TOP (@top) 
            'برگشت خرید',
            [Price],
            'اتوبوس',
            [ObjectIdDepartue],
            [dbo].PersianDate(IssueDate) + ' ' + [dbo].[TimeOfDateTime](IssueDate),
            [BankId],
            [Confirmed],
            [TrackingCode],
            [Transactionsuccess],
            [dbo].[Profile].FirstName + ' ' + [dbo].[Profile].LastName AS NAME,
            [dbo].GetUrlDownloads(4, [ObjectIdDepartue]),
            [ObjectIdReturn],
            [dbo].[payments].[TelNumber]
        FROM [dbo].[payments]
        INNER JOIN [dbo].[Profile] ON [dbo].[Profile].[UserId] = [dbo].[payments].UserId
        WHERE [dbo].[Payments].[IssueDate] >= @startdate
            AND [dbo].[Payments].[IssueDate] <= @enddate
            AND [dbo].[payments].ReserveType = 4
            AND [dbo].[payments].[state] = 4
    ELSE IF (@state = 0)
        INSERT INTO @BusTable
        SELECT TOP (@top) 
            CASE 
                WHEN [state] IN (1, 2)
                    THEN 'ناموفق'
                WHEN [state] IN (3, 5)
                    THEN 'پرداخت موفق و رزرو ناموفق'
                WHEN [state] = 4
                    THEN 'برگشت خرید'
                WHEN [state] = 6
                    THEN 'پرداخت موفق رزرو موفق'
                END,
            [Price],
            'اتوبوس',
            [ObjectIdDepartue],
            [dbo].PersianDate(IssueDate) + ' ' + [dbo].[TimeOfDateTime](IssueDate),
            [BankId],
            [Confirmed],
            [TrackingCode],
            [Transactionsuccess],
            [dbo].[Profile].FirstName + ' ' + [dbo].[Profile].LastName AS NAME,
            [dbo].GetUrlDownloads(4, [ObjectIdDepartue]),
            [ObjectIdReturn],
            [dbo].[payments].[TelNumber]
        FROM [dbo].[payments]
        INNER JOIN [dbo].[Profile] ON [dbo].[Profile].[UserId] = [dbo].[payments].UserId
        WHERE [dbo].[Payments].[IssueDate] >= @startdate
            AND [dbo].[Payments].[IssueDate] <= @enddate
            AND [dbo].[payments].ReserveType = 4

    RETURN
END;

ALTER函数[dbo].[FuncBusReport]
（@startdate DATETIME，
@enddate日期时间，
@顶级整数，
@州（国际）
返回@BusTable表
(
[Id][int]标识（1，1）不为空，
[州][nvarchar]（50），
[价格][nvarchar]（50），
[ReserveType][nvarchar]（50），
[ObjectedPartue][int]，
[发布日期][nvarchar]（50），
[BankId][int]，
[已确认][bit],，
[TrackingCode][nvarchar]（50），
[Transactionsuccess][nvarchar]（50），
[姓名][nvarchar]（128），
[TiketUrl][nvarchar]（128），
[ObjectdReturn][int]NULL，
[TelNumber][nvarchar]（50）空
)
作为
开始
如果（@state=1）
插入@BusTable
选择顶部（@TOP）
'ناموفق',
[价格]，
'اتوبوس',
[ObjectedPartue]，
[dbo].PersianDate（IssueDate）+''+[dbo].[TimeOfDateTime]（IssueDate），
[BankId]，
[确认]，
[跟踪代码]，
[交易成功]，
[dbo].[Profile].FirstName+'+[dbo]。[配置文件].LastName作为名称，
[dbo].GetUrlDownloads（4[ObjectedPartue]），
[ObjectedReturn]，
[dbo].[payments].[TelNumber]
从…起
[dbo].[付款]
内连接
[dbo].[Profile].[UserId]=[dbo].[payments].[payments].UserId上的[dbo].[Profile]
哪里
[dbo].[Payments].[IssueDate]>=@startdate
和[dbo].[Payments].[IssueDate]=@startdate
和[dbo].[Payments].[IssueDate]=@startdate
和[dbo].[Payments].[IssueDate]=@startdate
和[dbo].[Payments].[IssueDate]=@startdate
和[dbo].[Payments].[IssueDate]这就是我在这里缩短查询的原因


ALTER函数[dbo]。[FuncBusReport]（@startdate-datetime、@enddate-datetime、@top-int、@state-int）
返回@BusTable表
(
[Id][int]标识（1,1）不为空
，[州]nvarchar
，[价格]nvarchar
，[ReserveType]nvarchar
，[ObjectedPartue][int]
，[IssueDate]nvarchar
，[BankId][int]
，[已确认][比特]
，[TrackingCode]nvarchar
，[Transactionsuccess]nvarchar
，[Name]nvarchar
，[TiketUrl]nvarchar
，[ObjectdReturn][int]空
，[TelNumber]nvarchar null
)
作为开始
声明@StateID INT；
声明@StateTable表（col INT）
选择@StateID=@state

如果@StateID=1

开始
插入@StateTable（col）值（1）；
插入@StateTable（col）值（2）；
结束；
如果@StateID=2

开始
插入@StateTable（col）值（3）；
插入@StateTable（col）值（5）；
结束；
如果@StateID=3

开始
插入@StateTable（col）值（4）；
结束；
如果@StateID=4
开始
插入@StateTable（col）值（6）；
结束；
插入@BusTable
选择顶部（@top）
案例
当[陈述]在（1,2）中时，则为'
当[陈述]在（3,5）中时，则为“陈述”
当[状态]=4时，则为“状态”
当[状态]=6时，则为“状态”
结束
，[价格]
,'اتوبوس'
，[ObjectedPartue]
，[dbo].PersianDate（IssueDate）+''+[dbo].TimeOfDateTime
，[BankId]
，[已确认]
，[TrackingCode]
，[交易成功]
，[dbo].[Profile].FirstName+'+[dbo].[Profile].LastName作为名称
，[dbo].GetUrlDownloads（4[ObjectedPartue]）
，[ObjectedReturn]
，[dbo].[payments].[TelNumber]
来自[dbo]。[付款]
[dbo].[Profile].[UserId]=[dbo].[payments].[payments].UserId上的内部联接[dbo].[Profile]
哪里
[dbo].[Payments].[IssueDate]>=@startdate
和[dbo].[Payments].[IssueDate]研究参数嗅探，但在优化之前，您可能希望详细说明问题所在，解释计划、索引等。我希望使用具有相同功能的短查询。那么，是什么阻止您获取短查询呢？除了您当然希望其他人为您做这件事之外。请注意，多语句表值函数和标量函数可能会破坏您的性能，您在这里同时使用这两种函数。这里我使用了5个if条件，所以我想省略这些条件
ALTER function [dbo].[FuncBusReport](@startdate datetime,@enddate datetime,@top int ,@state int) 
  returns @BusTable table 
(
       [Id][int] identity(1,1) not null
      ,[state]nvarchar
      ,[Price]nvarchar
      ,[ReserveType]nvarchar
      ,[ObjectIdDepartue][int]
      ,[IssueDate]nvarchar
      ,[BankId][int]
      ,[Confirmed][bit]
      ,[TrackingCode]nvarchar
      ,[Transactionsuccess]nvarchar
      ,[Name]nvarchar
      ,[TiketUrl]nvarchar
      ,[ObjectIdReturn]  [int] null
      ,[TelNumber]nvarchar null
)
as begin
  DECLARE @StateID      INT;
  DECLARE @StateTable     TABLE (col INT)
SELECT  @StateID=@state; 


IF   @StateID=  1

BEGIN
    INSERT INTO @StateTable(col)VALUES(1);
    INSERT INTO @StateTable(col)VALUES(2);
END;
  IF   @StateID=  2

BEGIN
    INSERT INTO @StateTable(col)VALUES(3);
    INSERT INTO @StateTable(col)VALUES(5);
END;
IF   @StateID=  3

BEGIN
    INSERT INTO @StateTable(col)VALUES(4);
END;
IF   @StateID=  4 
BEGIN
    INSERT INTO @StateTable(col)VALUES(6);
END;
    insert into @BusTable
     select top (@top)
        case
          when [state] in(1,2) then 'ناموفق'
          when [state] in(3,5) then 'پرداخت موفق و رزرو ناموفق'
          when [state] = 4 then 'برگشت خرید'
          when [state] = 6 then 'پرداخت موفق رزرو موفق'
        end 
      ,[Price]
      ,'اتوبوس'
      ,[ObjectIdDepartue]
      ,[dbo].PersianDate(IssueDate) + ' '+ [dbo].TimeOfDateTime
      ,[BankId]
      ,[Confirmed]
      ,[TrackingCode]
      ,[Transactionsuccess]
      ,[dbo].[Profile].FirstName+' '+[dbo].[Profile].LastName as Name
      ,[dbo].GetUrlDownloads(4,[ObjectIdDepartue])
      ,[ObjectIdReturn]
      ,[dbo].[payments].[TelNumber]
     from [dbo].[payments]
       inner join [dbo].[Profile] on [dbo].[Profile].[UserId]=[dbo].[payments].UserId
      where 
       [dbo].[Payments].[IssueDate] >=@startdate
       AND [dbo].[Payments].[IssueDate] <=@enddate 
       and [dbo].[payments].ReserveType=4
       and [dbo].[payments].[transactionsuccess] in(0,1)
       and [dbo].[payments].[state] in (select*from @StateTable)

return
end;