我的表有超过 10 万条记录，并且已经存在适当的索引。这是我的存储过程，需要将近 1.2 秒，目前是不可接受的：
ALTER PROCEDURE [dbo].[GetNextAndPreviousInsturmentID]
(
@AccountID int,
@JurisdictionID int,
@InstrumentID varchar(14),
@PreviousInstrumentID varchar(14) OUT,
@NextInstrumentID varchar(14) OUT,
@PreviousDocumentID int OUT,
@NextDocumentID int OUT,
@ShowPublicPageForPreviousInstrumentID bit OUT,
@ShowPublicPageForNextInstrumentID bit OUT
)
AS
BEGIN
Declare @RowNum int = 0
Declare @PreviousCreatedByAccountID int = 0
Declare @PreviousBelongsToJurisdictionID int = 0
Declare @NextCreatedByAccountID int = 0
Declare @NextBelongsToJurisdictionID int = 0
Select @RowNum = RowNum
From
(
Select ROW_NUMBER() Over (Order by RecordingDateTime) as RowNum, InstrumentID
From Documents Where RecordingDateTime IS NOT NULL
) v where v.InstrumentID = @InstrumentID
;With normal As
(
Select ROW_NUMBER() Over (Order by RecordingDateTime) as RowNum,
DocumentID,
CreatedByAccountID,
JurisdictionID,
InstrumentID
From Documents Where RecordingDateTime IS NOT NULL
)
SELECT
@PreviousInstrumentID = MAX(CASE RowNum WHEN @RowNum - 1 THEN InstrumentID END),
@PreviousDocumentID = MAX(CASE RowNum WHEN @RowNum - 1 THEN DocumentID END),
@PreviousCreatedByAccountID = MAX(CASE RowNum WHEN @RowNum - 1 THEN CreatedByAccountID END),
@PreviousBelongsToJurisdictionID = MAX(CASE RowNum WHEN @RowNum - 1 THEN JurisdictionID END),
@NextInstrumentID = MAX(CASE RowNum WHEN @RowNum + 1 THEN InstrumentID END),
@NextDocumentID = MAX(CASE RowNum WHEN @RowNum + 1 THEN DocumentID END),
@NextCreatedByAccountID = MAX(CASE RowNum WHEN @RowNum + 1 THEN CreatedByAccountID END),
@NextBelongsToJurisdictionID = MAX(CASE RowNum WHEN @RowNum + 1 THEN JurisdictionID END)
FROM normal
WHERE RowNum IN (@RowNum - 1, @RowNum + 1)
if @JurisdictionID > 0
Begin
If @NextBelongsToJurisdictionID = @JurisdictionID
Begin
Set @ShowPublicPageForNextInstrumentID = 0
End
Else
Begin
Set @ShowPublicPageForNextInstrumentID = 1
End
If @PreviousBelongsToJurisdictionID = @JurisdictionID
Begin
Set @ShowPublicPageForPreviousInstrumentID = 0
End
Else
Begin
Set @ShowPublicPageForPreviousInstrumentID = 1
End
End
Else If @AccountID > 0
Begin
If @NextCreatedByAccountID = @AccountID
Begin
Set @ShowPublicPageForNextInstrumentID = 0
End
Else
Begin
Set @ShowPublicPageForNextInstrumentID = 1
End
If @PreviousCreatedByAccountID = @AccountID
Begin
Set @ShowPublicPageForPreviousInstrumentID = 0
End
Else
Begin
Set @ShowPublicPageForPreviousInstrumentID = 1
End
End
Else
Begin
Set @ShowPublicPageForNextInstrumentID = 1
Set @ShowPublicPageForPreviousInstrumentID = 1
End
Set @PreviousInstrumentID = IsNull(@PreviousInstrumentID,'')
Set @NextInstrumentID = IsNull(@NextInstrumentID,'')
Set @PreviousDocumentID = IsNull(@PreviousDocumentID,0)
Set @NextDocumentID = IsNull(@NextDocumentID,0)
Set @ShowPublicPageForPreviousInstrumentID = ISNULL(@ShowPublicPageForPreviousInstrumentID,0)
Set @ShowPublicPageForNextInstrumentID = IsNull(@ShowPublicPageForNextInstrumentID,0)
END
这是我的表定义以及索引：
CREATE TABLE [dbo].[Documents](
[DocumentID] [int] IDENTITY(1000001,1) NOT NULL,
[IGroupID] [int] NOT NULL,
[ITypeID] [int] NOT NULL,
[IDate] [smalldatetime] NOT NULL,
[JudgementTypeID] [smallint] NULL,
[JurisdictionID] [int] NOT NULL,
[DocumentDate] [smalldatetime] NULL,
[Remarks] [varchar](256) NULL,
[UserID] [int] NOT NULL,
[CreatedByAccountID] [int] NULL,
[CreatedByJurisdictionID] [int] NULL,
[InternalNotes] [varchar](250) NULL,
[ParentDocumentID] [int] NULL,
[DocumentStatusID] [tinyint] NULL,
[FilingNumber] [int] NULL,
[EfileDate] [datetime] NULL,
[EfiledByUserID] [int] NULL,
[ACEfileCreditCardID] [int] NULL,
[ACEfileBankAccountID] [int] NULL,
[StampData] [varchar](1024) NULL,
[InstrumentID] [varchar](14) NULL,
[ApprovedBy] [int] NULL,
[RecordingDateTime] [datetime] NULL,
[Receipt] [varchar](8000) NULL,
[ReceiptNo] [varchar](50) NULL,
[IsReEfiled] [bit] NOT NULL,
[OldInstrumentID] [varchar](14) NULL,
[LastStatusChangedDateTime] [datetime] NULL,
[ImportedFromInstrumentID] [varchar](14) NULL,
[IsChanged] [bit] NOT NULL,
[IsUpdatedAfterChanged] [bit] NOT NULL,
CONSTRAINT [PK_Documents] PRIMARY KEY CLUSTERED
(
[DocumentID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY],
CONSTRAINT [UQ_Documents] UNIQUE NONCLUSTERED
(
[DocumentID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
) ON [PRIMARY]
GO
SET ANSI_PADDING OFF
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_ACEfileBankAccountID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_ACEfileBankAccountID] ON [dbo].[Documents]
(
[ACEfileBankAccountID] ASC
)
INCLUDE ( [ApprovedBy],
[JurisdictionID],
[DocumentStatusID],
[DocumentID],
[IGroupID],
[ITypeID],
[IDate],
[JudgementTypeID],
[DocumentDate],
[Remarks],
[UserID],
[CreatedByAccountID],
[CreatedByJurisdictionID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[ACEfileCreditCardID],
[StampData],
[InstrumentID],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[OldInstrumentID],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_ACEfileCreditCardID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_ACEfileCreditCardID] ON [dbo].[Documents]
(
[ACEfileCreditCardID] ASC
)
INCLUDE ( [ACEfileBankAccountID],
[ApprovedBy],
[JurisdictionID],
[DocumentStatusID],
[DocumentID],
[IGroupID],
[ITypeID],
[IDate],
[JudgementTypeID],
[DocumentDate],
[Remarks],
[UserID],
[CreatedByAccountID],
[CreatedByJurisdictionID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[StampData],
[InstrumentID],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[OldInstrumentID],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_ApprovedBy] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_ApprovedBy] ON [dbo].[Documents]
(
[ApprovedBy] ASC
)
INCLUDE ( [JurisdictionID],
[DocumentStatusID],
[DocumentID],
[IGroupID],
[ITypeID],
[IDate],
[JudgementTypeID],
[DocumentDate],
[Remarks],
[UserID],
[CreatedByAccountID],
[CreatedByJurisdictionID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[ACEfileCreditCardID],
[ACEfileBankAccountID],
[StampData],
[InstrumentID],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[OldInstrumentID],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_CreatedByAccountID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_CreatedByAccountID] ON [dbo].[Documents]
(
[CreatedByAccountID] ASC
)
INCLUDE ( [InstrumentID],
[DocumentStatusID],
[IGroupID],
[ITypeID],
[IDate],
[JudgementTypeID],
[JurisdictionID],
[DocumentDate],
[Remarks],
[UserID],
[CreatedByJurisdictionID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[ACEfileCreditCardID],
[ACEfileBankAccountID],
[StampData],
[ApprovedBy],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[OldInstrumentID],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_CreatedByJurisdictionID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_CreatedByJurisdictionID] ON [dbo].[Documents]
(
[CreatedByJurisdictionID] ASC
)
INCLUDE ( [CreatedByAccountID],
[InstrumentID],
[DocumentStatusID],
[IGroupID],
[ITypeID],
[IDate],
[JudgementTypeID],
[JurisdictionID],
[DocumentDate],
[Remarks],
[UserID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[ACEfileCreditCardID],
[ACEfileBankAccountID],
[StampData],
[ApprovedBy],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[OldInstrumentID],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_DocumentDate] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_DocumentDate] ON [dbo].[Documents]
(
[DocumentDate] ASC
)
INCLUDE ( [ACEfileCreditCardID],
[ACEfileBankAccountID],
[ApprovedBy],
[JurisdictionID],
[DocumentStatusID],
[DocumentID],
[IGroupID],
[ITypeID],
[IDate],
[JudgementTypeID],
[Remarks],
[UserID],
[CreatedByAccountID],
[CreatedByJurisdictionID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[StampData],
[InstrumentID],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[OldInstrumentID],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_DocumentStatusID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_DocumentStatusID] ON [dbo].[Documents]
(
[DocumentStatusID] ASC
)
INCLUDE ( [DocumentID],
[IGroupID],
[ITypeID],
[IDate],
[JudgementTypeID],
[JurisdictionID],
[DocumentDate],
[Remarks],
[UserID],
[CreatedByAccountID],
[CreatedByJurisdictionID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[ACEfileCreditCardID],
[ACEfileBankAccountID],
[StampData],
[InstrumentID],
[ApprovedBy],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[OldInstrumentID],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_EfileDate] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_EfileDate] ON [dbo].[Documents]
(
[EfileDate] ASC
)
INCLUDE ( [UserID],
[RecordingDateTime],
[ApprovedBy],
[ACEfileBankAccountID],
[LastStatusChangedDateTime],
[ACEfileCreditCardID],
[EfiledByUserID],
[ITypeID],
[IGroupID],
[InstrumentID],
[OldInstrumentID],
[CreatedByJurisdictionID],
[CreatedByAccountID],
[DocumentStatusID],
[IDate],
[JudgementTypeID],
[JurisdictionID],
[DocumentDate],
[Remarks],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[StampData],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_EfiledByUserID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_EfiledByUserID] ON [dbo].[Documents]
(
[EfiledByUserID] ASC
)
INCLUDE ( [ITypeID],
[IGroupID],
[InstrumentID],
[OldInstrumentID],
[CreatedByJurisdictionID],
[CreatedByAccountID],
[DocumentStatusID],
[IDate],
[JudgementTypeID],
[JurisdictionID],
[DocumentDate],
[Remarks],
[UserID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[ACEfileCreditCardID],
[ACEfileBankAccountID],
[StampData],
[ApprovedBy],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
/****** Object: Index [IX_FilingNumber] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_FilingNumber] ON [dbo].[Documents]
(
[FilingNumber] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_IDate] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_IDate] ON [dbo].[Documents]
(
[IDate] ASC
)
INCLUDE ( [EfileDate],
[UserID],
[RecordingDateTime],
[ApprovedBy],
[ACEfileBankAccountID],
[LastStatusChangedDateTime],
[ACEfileCreditCardID],
[EfiledByUserID],
[ITypeID],
[IGroupID],
[InstrumentID],
[OldInstrumentID],
[CreatedByJurisdictionID],
[CreatedByAccountID],
[DocumentStatusID],
[JudgementTypeID],
[JurisdictionID],
[DocumentDate],
[Remarks],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[StampData],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_IGroupID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_IGroupID] ON [dbo].[Documents]
(
[IGroupID] ASC
)
INCLUDE ( [UserID],
[DocumentDate],
[ACEfileCreditCardID],
[ACEfileBankAccountID],
[ApprovedBy],
[JurisdictionID],
[DocumentStatusID],
[DocumentID],
[ITypeID],
[IDate],
[JudgementTypeID],
[Remarks],
[CreatedByAccountID],
[CreatedByJurisdictionID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[StampData],
[InstrumentID],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[OldInstrumentID],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_ImportedFromInstrumentID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_ImportedFromInstrumentID] ON [dbo].[Documents]
(
[ImportedFromInstrumentID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_InstrumentID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_InstrumentID] ON [dbo].[Documents]
(
[InstrumentID] ASC
)
INCLUDE ( [OldInstrumentID],
[CreatedByJurisdictionID],
[CreatedByAccountID],
[DocumentStatusID],
[IGroupID],
[ITypeID],
[IDate],
[JudgementTypeID],
[JurisdictionID],
[DocumentDate],
[Remarks],
[UserID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[ACEfileCreditCardID],
[ACEfileBankAccountID],
[StampData],
[ApprovedBy],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_ITypeID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_ITypeID] ON [dbo].[Documents]
(
[ITypeID] ASC
)
INCLUDE ( [IGroupID],
[UserID],
[DocumentDate],
[ACEfileCreditCardID],
[ACEfileBankAccountID],
[ApprovedBy],
[JurisdictionID],
[DocumentStatusID],
[DocumentID],
[IDate],
[JudgementTypeID],
[Remarks],
[CreatedByAccountID],
[CreatedByJurisdictionID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[StampData],
[InstrumentID],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[OldInstrumentID],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_JurisdictionID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_JurisdictionID] ON [dbo].[Documents]
(
[JurisdictionID] ASC
)
INCLUDE ( [DocumentStatusID],
[DocumentID],
[IGroupID],
[ITypeID],
[IDate],
[JudgementTypeID],
[DocumentDate],
[Remarks],
[UserID],
[CreatedByAccountID],
[CreatedByJurisdictionID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[ACEfileCreditCardID],
[ACEfileBankAccountID],
[StampData],
[InstrumentID],
[ApprovedBy],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[OldInstrumentID],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_LastStatusChangedDateTime] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_LastStatusChangedDateTime] ON [dbo].[Documents]
(
[LastStatusChangedDateTime] ASC
)
INCLUDE ( [ACEfileBankAccountID],
[ACEfileCreditCardID],
[EfiledByUserID],
[ITypeID],
[IGroupID],
[InstrumentID],
[OldInstrumentID],
[CreatedByJurisdictionID],
[CreatedByAccountID],
[DocumentStatusID],
[IDate],
[JudgementTypeID],
[JurisdictionID],
[DocumentDate],
[Remarks],
[UserID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[StampData],
[ApprovedBy],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_OldInstrumentID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_OldInstrumentID] ON [dbo].[Documents]
(
[OldInstrumentID] ASC
)
INCLUDE ( [CreatedByJurisdictionID],
[CreatedByAccountID],
[InstrumentID],
[DocumentStatusID],
[IGroupID],
[ITypeID],
[IDate],
[JudgementTypeID],
[JurisdictionID],
[DocumentDate],
[Remarks],
[UserID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[ACEfileCreditCardID],
[ACEfileBankAccountID],
[StampData],
[ApprovedBy],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
/****** Object: Index [IX_ParentDocumentID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_ParentDocumentID] ON [dbo].[Documents]
(
[ParentDocumentID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_RecordingDateTime] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_RecordingDateTime] ON [dbo].[Documents]
(
[RecordingDateTime] ASC
)
INCLUDE ( [ApprovedBy],
[ACEfileBankAccountID],
[LastStatusChangedDateTime],
[ACEfileCreditCardID],
[EfiledByUserID],
[ITypeID],
[IGroupID],
[InstrumentID],
[OldInstrumentID],
[CreatedByJurisdictionID],
[CreatedByAccountID],
[DocumentStatusID],
[IDate],
[JudgementTypeID],
[JurisdictionID],
[DocumentDate],
[Remarks],
[UserID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[StampData],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO
/****** Object: Index [IX_UserID] Script Date: 3/13/2013 5:17:53 AM ******/
CREATE NONCLUSTERED INDEX [IX_UserID] ON [dbo].[Documents]
(
[UserID] ASC
)
INCLUDE ( [DocumentDate],
[ACEfileCreditCardID],
[ACEfileBankAccountID],
[ApprovedBy],
[JurisdictionID],
[DocumentStatusID],
[DocumentID],
[IGroupID],
[ITypeID],
[IDate],
[JudgementTypeID],
[Remarks],
[CreatedByAccountID],
[CreatedByJurisdictionID],
[InternalNotes],
[ParentDocumentID],
[FilingNumber],
[EfileDate],
[EfiledByUserID],
[StampData],
[InstrumentID],
[RecordingDateTime],
[Receipt],
[ReceiptNo],
[IsReEfiled],
[OldInstrumentID],
[LastStatusChangedDateTime],
[ImportedFromInstrumentID]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY]
GO
有什么办法可以加快这个查询？基本上我正在尝试获取下一个和上一个。所以如果我传入一些仪器 ID，我会尝试找到它的上一个和下一个记录。
这是我的滞后/领先查询（新功能 - 性能缓慢 :()
;With normal As
(
Select Top 100 Percent
InstrumentID,
Lead(d.InstrumentID) Over (Order By RecordingDateTime) as LeadInstrumentID,
Lag(d.InstrumentID) Over (Order By RecordingDateTime) as LagInstrumentID,
DocumentID,
Lead(d.DocumentID) Over (Order By RecordingDateTime) as LeadDocumentID,
Lag(d.DocumentID) Over (Order By RecordingDateTime) as LagDocumentID,
CreatedByAccountID,
Lead(d.CreatedByAccountID) Over (Order By RecordingDateTime) as LeadCreatedByAccountID,
Lag(d.CreatedByAccountID) Over (Order By RecordingDateTime) as LagCreatedByAccountID,
JurisdictionID,
Lead(d.JurisdictionID) Over (Order By RecordingDateTime) as LeadJurisdictionID,
Lag(d.JurisdictionID) Over (Order By RecordingDateTime) as LagJurisdictionID
From Documents d Where RecordingDateTime IS NOT NULL
Order by RecordingDateTime
)
SELECT
@PreviousInstrumentID = LagInstrumentID,
@PreviousDocumentID = LagDocumentID,
@PreviousCreatedByAccountID = LagCreatedByAccountID,
@PreviousBelongsToJurisdictionID = LagJurisdictionID,
@NextInstrumentID = LeadInstrumentID,
@NextDocumentID = LeadDocumentID,
@NextCreatedByAccountID = LeadCreatedByAccountID,
@NextBelongsToJurisdictionID = LeadJurisdictionID
FROM normal n
Where n.InstrumentID = @InstrumentID
现在我已经有一个关于 InstrumentID 的索引，但是这个查询比我之前在 SSMS 中花费 2 秒的查询更糟糕。
这就是我最终得到的 - 3个单独的查询：
Declare @RecordingDateTime datetime
Select @RecordingDateTime = RecordingDateTime
From Documents d Where d.InstrumentID = @InstrumentID
Select Top 1 @PreviousInstrumentID = InstrumentID ,
@PreviousDocumentID = DocumentID ,
@PreviousCreatedByAccountID = CreatedByAccountID,
@PreviousBelongsToJurisdictionID = JurisdictionID
From Documents d
Where d.RecordingDateTime < @RecordingDateTime
Order By d.RecordingDateTime Desc
Select Top 1 @NextInstrumentID = InstrumentID ,
@NextDocumentID = DocumentID ,
@NextCreatedByAccountID = CreatedByAccountID,
@NextBelongsToJurisdictionID = JurisdictionID
From Documents d
Where d.RecordingDateTime > @RecordingDateTime
Order By d.RecordingDateTime
此查询的持续时间25与 SQL 探查器中的说明相同