我正在尝试构建一个用于jQuery DataTables前端API的T-SQL存储过程。前端UI为调用过程提供orderby，过滤器，显示起始行和显示长度，以及您将在下面看到的参数。
以下查询中是否有任何我缺少的内容可以提高性能？
我需要向最终用户显示所有列，但我只需要@NumberOfRowsToTake参数中提供的行。
感谢您的时间。
CREATE PROCEDURE [dbo].[usp_Bank_GetAccounts_Paged]
@SortDirection VARCHAR(4) = 'ASC'
,@SortColumn VARCHAR(50) = 'Lead_ID'
,@StartingRow INT = 1
,@NumOfRowsToTake INT = 5
,@Lead_ID INT = NULL
,@Account_ID BIGINT = NULL
,@Organization VARCHAR(100) = NULL
,@LeadNumber VARCHAR(20) = NULL
,@Source VARCHAR(50) = NULL
,@LeadReceivedDateBeg DATE = NULL
,@LeadReceivedDateEnd DATE = NULL
,@CalenderYear INT = NULL
,@RefundAvailableForRecoveryLowest MONEY = NULL
,@RefundAvailableForRecoveryHighest MONEY = NULL
,@ReasonForReferral VARCHAR(255) = NULL
,@CustomerNumber VARCHAR(11) = NULL
,@AccountLastName VARCHAR(20) = NULL
,@AccountFirstName VARCHAR(20) = NULL
,@NameOnRefundCheck VARCHAR(40) = NULL
,@Address VARCHAR(80) = NULL
,@City VARCHAR(20) = NULL
,@State VARCHAR(10) = NULL
,@ZipCode VARCHAR(10) = NULL
,@RTN VARCHAR(10) = NULL
,@ACCTNumber VARCHAR(20) = NULL
,@DebitCardNumber VARCHAR(20) = NULL
,@RefundClaimedLowest MONEY = NULL
,@RefundClaimedHighest MONEY = NULL
,@TreasuryCheckNumber VARCHAR(15) = NULL
,@Results VARCHAR(15) = NULL
,@SuspenseStatus VARCHAR(20) = NULL
,@FundsRequestedOrgLowest MONEY = NULL
,@FundsRequestedOrgHighest MONEY = NULL
,@FundsReturnedCustomerLowest MONEY = NULL
,@FundsReturnedCustomerHighest MONEY = NULL
,@VoucherOrMemoApplied VARCHAR(8) = NULL
,@Current_User_Name VARCHAR(5) = NULL
,@AssigneeFirstName VARCHAR(25) = NULL
,@AssigneeLastName VARCHAR(30) = NULL
,@AssigneeFullName VARCHAR(64) = NULL
,@Assignee_Site VARCHAR(10) = NULL
,@Current_Status_ID SMALLINT = NULL
,@Status_Name VARCHAR(20) = NULL
,@comment VARCHAR(255) = NULL
,@OriginalDepositDateBeg DATE = NULL
,@OriginalDepositDateEnd DATE = NULL
,@OriginalDepositAmountLowest MONEY = NULL
,@OriginalDepositAmountHighest MONEY = NULL
AS
BEGIN
; WITH ACCOUNTS AS
(
SELECT TOP 99.9999999 PERCENT
[A].[Lead_ID]
,[A].[Account_ID]
,[L].[Organization]
,[L].[Lead_Number]
,[L].[Source]
,[L].[Lead_Received_Date]
,[A].[Calender_Year]
,[A].[Amount_To_Recover]
,[A].[Reason_For_Referral]
,[A].[CustomerNumber]
,[A].[Last_Name] AS [AccountLastName]
,[A].[First_Name] AS [AccountFirstName]
,[A].[Name_On_Refund]
,[A].[Address]
,[A].[City]
,[A].[State]
,[A].[Zip_Code]
,[A].[RTN]
,[A].[Audit_Number]
,[A].[Scan_Number]
,[A].[Amount_Claimed]
,[A].[Building_Number]
,[A].[Results]
,[A].[Date_Voucher_Sent]
,[A].[Return_ID_Number]
,[A].[Suspense_Status]
,[A].[Funds_Requested]
,[A].[Funds_Actually_Given]
,[A].[Voucher_or_Memo_Applied]
,[U].[SEID] AS [Current_User_Name]
,[U].[First_Name] AS [AssigneeFirstName]
,[U].[Last_Name] AS [AssigneeLastName]
,[U].[Last_Name] + ', ' + [U].[First_Name] + '(' + [U].[SEID] + ')' AS [AssigneeFullName]
,[U].[Site] AS [Assignee_Site]
,[A].[Current_Status_ID]
,[S].[Status_Name]
,[A].[Deleted_Date]
,[A].[comment]
,[A].[Original_Deposit_Date]
,[A].[Original_Deposit_Amount]
,ROW_NUMBER() OVER (
ORDER BY CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Lead_ID' THEN [A].[Lead_ID] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Lead_ID' THEN [A].[Lead_ID] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Account_ID' THEN [A].[Account_ID] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Account_ID' THEN [A].[Account_ID] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Organization' THEN [L].[Organization] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Organization' THEN [L].[Organization] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Lead_Number' THEN [L].[Lead_Number] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Lead_Number' THEN [L].[Lead_Number] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Source' THEN [L].[Source] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Source' THEN [L].[Source] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Lead_Received_Date' THEN [L].[Lead_Received_Date] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Lead_Received_Date' THEN [L].[Lead_Received_Date] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Calender_Year' THEN [A].[Calender_Year] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Calender_Year' THEN [A].[Calender_Year] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Amount_To_Recover' THEN [A].[Amount_To_Recover] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Amount_To_Recover' THEN [A].[Amount_To_Recover] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Amount_To_Recover' THEN [A].[Reason_For_Referral] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Amount_To_Recover' THEN [A].[Reason_For_Referral] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'CustomerNumber' THEN [A].[CustomerNumber] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'CustomerNumber' THEN [A].[CustomerNumber] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'AccountLastName' THEN [A].[Last_Name] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'AccountFirstName' THEN [A].[First_Name] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Name_On_Refund' THEN [A].[Name_On_Refund] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Name_On_Refund' THEN [A].[Name_On_Refund] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Address' THEN [A].[Address] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Address' THEN [A].[Address] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'City' THEN [A].[City] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'City' THEN [A].[City] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'State' THEN [A].[State] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'State' THEN [A].[State] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Zip_Code' THEN [A].[Zip_Code] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Zip_Code' THEN [A].[Zip_Code] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'RTN' THEN [A].[RTN] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'RTN' THEN [A].[RTN] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Audit_Number' THEN [A].[Audit_Number] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Audit_Number' THEN [A].[Audit_Number] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Scan_Number' THEN [A].[Scan_Number] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Scan_Number' THEN [A].[Scan_Number] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Amount_Claimed' THEN [A].[Amount_Claimed] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Amount_Claimed' THEN [A].[Amount_Claimed] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Results' THEN [A].[Results] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Results' THEN [A].[Results] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Date_Voucher_Sent' THEN [A].[Date_Voucher_Sent] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Date_Voucher_Sent' THEN [A].[Date_Voucher_Sent] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Return_ID_Number' THEN [A].[Return_ID_Number] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Return_ID_Number' THEN [A].[Return_ID_Number] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Suspense_Status' THEN [A].[Suspense_Status] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Suspense_Status' THEN [A].[Suspense_Status] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Funds_Requested' THEN [A].[Funds_Requested] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Funds_Requested' THEN [A].[Funds_Requested] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Funds_Actually_Given' THEN [A].[Funds_Requested] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Funds_Actually_Given' THEN [A].[Funds_Requested] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Voucher_or_Memo_Applied' THEN [A].[Voucher_or_Memo_Applied] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Voucher_or_Memo_Applied' THEN [A].[Voucher_or_Memo_Applied] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Current_User_Name' THEN [U].[SEID] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Current_User_Name' THEN [U].[SEID] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'AssigneeFirstName' THEN [U].[First_Name] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'AssigneeFirstName' THEN [U].[First_Name] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'AssigneeLastName' THEN [U].[Last_Name] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'AssigneeLastName' THEN [U].[Last_Name] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Assignee_Site' THEN [U].[Site] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Assignee_Site' THEN [U].[Site] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Current_Status_ID' THEN [A].[Current_Status_ID] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Current_Status_ID' THEN [A].[Current_Status_ID] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Status_Name' THEN [S].[Status_Name] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Status_Name' THEN [S].[Status_Name] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Deleted_Date' THEN [A].[Deleted_Date] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Deleted_Date' THEN [A].[Deleted_Date] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'comment' THEN [A].[comment] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'comment' THEN [A].[comment] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Original_Deposit_Date' THEN [A].[Original_Deposit_Date] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Original_Deposit_Date' THEN [A].[Original_Deposit_Date] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Original_Deposit_Amount' THEN [A].[Original_Deposit_Amount] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Original_Deposit_Amount' THEN [A].[Original_Deposit_Amount] END DESC
) AS [ROWNUM]
FROM
[dbo].[Bank_Account] AS [A] WITH (NOLOCK)
INNER JOIN
[dbo].[Bank_Lead] AS [L] WITH (NOLOCK) ON [A].[Lead_ID] = [L].[Lead_ID]
LEFT JOIN
[dbo].[Bank_ref_Status] AS [S] WITH (NOLOCK) ON [A].[Current_Status_ID] = [S].[Status_ID]
LEFT JOIN
[dbo].[Bank_Assignee] AS [U] WITH (NOLOCK) ON [A].[Current_User_Name] = [U].[SEID]
WHERE
(@Lead_ID IS NULL OR [A].[Lead_ID] = @Lead_ID)
AND (@Account_ID IS NULL OR [A].[Account_ID] = @Account_ID)
AND (@Organization IS NULL OR CHARINDEX(UPPER(@Organization), UPPER([L].[Organization])) > 0)
AND (@LeadNumber IS NULL OR CHARINDEX(UPPER(@LeadNumber), UPPER([L].[Lead_Number])) > 0)
AND (@Source IS NULL OR CHARINDEX(UPPER(@Source), UPPER([L].[Source])) > 0)
AND (@LeadReceivedDateBeg IS NULL OR [L].[Lead_Received_Date] >= @LeadReceivedDateBeg)
AND (@LeadReceivedDateEnd IS NULL OR [L].[Lead_Received_Date] <= @LeadReceivedDateEnd)
AND (@CalenderYear IS NULL OR [A].[Calender_Year] = @CalenderYear)
AND (@RefundAvailableForRecoveryLowest IS NULL OR [A].[Amount_To_Recover] >= @RefundAvailableForRecoveryLowest)
AND (@RefundAvailableForRecoveryHighest IS NULL OR [A].[Amount_To_Recover] <= @RefundAvailableForRecoveryHighest)
AND (@ReasonForReferral IS NULL OR CHARINDEX(UPPER(@ReasonForReferral), UPPER([A].[Reason_For_Referral])) > 0)
AND (@CustomerNumber IS NULL OR CHARINDEX(UPPER(@CustomerNumber), UPPER([A].[CustomerNumber])) > 0)
AND (@AccountLastName IS NULL OR CHARINDEX(UPPER(@AccountLastName), UPPER([A].[Last_Name])) > 0)
AND (@AccountFirstName IS NULL OR CHARINDEX(UPPER(@AccountFirstName), UPPER([A].[First_Name])) > 0)
AND (@NameOnRefundCheck IS NULL OR CHARINDEX(UPPER(@NameOnRefundCheck), UPPER([A].[Name_On_Refund])) > 0)
AND (@Address IS NULL OR CHARINDEX(UPPER(@Address), UPPER([A].[Address])) > 0)
AND (@City IS NULL OR CHARINDEX(UPPER(@City), UPPER([A].[City])) > 0)
AND (@State IS NULL OR CHARINDEX(UPPER(@State), UPPER([A].[State])) > 0)
AND (@ZipCode IS NULL OR CHARINDEX(UPPER(@ZipCode), UPPER([A].[Zip_Code])) > 0)
AND (@RTN IS NULL OR CHARINDEX(UPPER(@RTN), UPPER([A].[RTN])) > 0)
AND (@ACCTNumber IS NULL OR CHARINDEX(UPPER(@ACCTNumber), UPPER([A].[Audit_Number])) > 0)
AND (@DebitCardNumber IS NULL OR CHARINDEX(UPPER(@DebitCardNumber), UPPER([A].[Scan_Number])) > 0)
AND (@RefundClaimedLowest IS NULL OR [A].[Amount_Claimed] >= @RefundClaimedLowest)
AND (@RefundClaimedHighest IS NULL OR [A].[Amount_Claimed] <= @RefundClaimedHighest)
AND (@TreasuryCheckNumber IS NULL OR CHARINDEX(UPPER(@TreasuryCheckNumber), UPPER([A].[Building_Number])) > 0)
AND (@Results IS NULL OR CHARINDEX(UPPER(@Results), UPPER([A].[Results])) > 0)
AND (@SuspenseStatus IS NULL OR CHARINDEX(UPPER(@SuspenseStatus), UPPER([A].[Suspense_Status])) > 0)
AND (@FundsRequestedOrgLowest IS NULL OR [A].[Funds_Requested] >= @FundsRequestedOrgLowest)
AND (@FundsRequestedOrgHighest IS NULL OR [A].[Funds_Requested] <= @FundsRequestedOrgHighest) AND (@FundsReturnedCustomerLowest IS NULL OR [A].[Funds_Actually_Given] >= @FundsReturnedCustomerLowest) AND (@FundsReturnedCustomerHighest IS NULL OR [A].[Funds_Actually_Given] <= @FundsReturnedCustomerHighest) AND (@VoucherOrMemoApplied IS NULL OR CHARINDEX(UPPER(@VoucherOrMemoApplied), UPPER([A].[Voucher_or_Memo_Applied])) > 0
) AND (@Current_User_Name IS NULL OR CHARINDEX(UPPER(@Current_User_Name), UPPER([U].[SEID])) > 0) AND (@AssigneeFirstName IS NULL OR CHARINDEX(UPPER(@AssigneeFirstName), UPPER([U].[First_Name])) > 0) AND (@AssigneeLastName IS NULL OR CHARINDEX(UPPER(@AssigneeLastName), UPPER([U].[Last_Name])) > 0) AND (@AssigneeFullName IS NULL OR CHARINDEX(UPPER(@AssigneeFullName), UPPER([U].[Last_Name] + ', ' + [U].[First_Name] + '(' + [U].[SEID] + ')')) > 0) AND (@Assignee_Site IS NULL OR CHARINDEX(UPPER(@Assignee_Site), UPPER([U].[Site])) > 0) AND (@Current_Status_ID IS NULL OR @Current_Status_ID = [A].[Current_Status_ID]) AND (@Status_Name IS NULL OR CHARINDEX(UPPER(@Status_Name), UPPER([S].[Status_Name])) > 0) AND ([A].Deleted_Date IS NULL) AND (@comment IS NULL OR CHARINDEX(UPPER(@comment), UPPER([A].[comment])) > 0) AND (@OriginalDepositDateBeg IS NULL OR [A].[Original_Deposit_Date] >= @OriginalDepositDateBeg)
AND (@OriginalDepositDateEnd IS NULL OR [A].[Original_Deposit_Date] <= @OriginalDepositDateEnd) AND (@OriginalDepositAmountLowest IS NULL OR [A].[Original_Deposit_Amount] >= @OriginalDepositAmountLowest) AND (@OriginalDepositAmountHighest IS NULL OR [A].[Original_Deposit_Amount] <= @OriginalDepositAmountHighest)
ORDER BY CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Lead_ID' THEN [A].[Lead_ID] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Lead_ID' THEN [A].[Lead_ID] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Account_ID' THEN [A].[Account_ID] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Account_ID' THEN [A].[Account_ID] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Organization' THEN [L].[Organization] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Organization' THEN [L].[Organization] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Lead_Number' THEN [L].[Lead_Number] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Lead_Number' THEN [L].[Lead_Number] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Source' THEN [L].[Source] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Source' THEN [L].[Source] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Lead_Received_Date' THEN [L].[Lead_Received_Date] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Lead_Received_Date' THEN [L].[Lead_Received_Date] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Calender_Year' THEN [A].[Calender_Year] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Calender_Year' THEN [A].[Calender_Year] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Amount_To_Recover' THEN [A].[Amount_To_Recover] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Amount_To_Recover' THEN [A].[Amount_To_Recover] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Amount_To_Recover' THEN [A].[Reason_For_Referral] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Amount_To_Recover' THEN [A].[Reason_For_Referral] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'CustomerNumber' THEN [A].[CustomerNumber] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'CustomerNumber' THEN [A].[CustomerNumber] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'AccountLastName' THEN [A].[Last_Name] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'AccountFirstName' THEN [A].[First_Name] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Name_On_Refund' THEN [A].[Name_On_Refund] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Name_On_Refund' THEN [A].[Name_On_Refund] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Address' THEN [A].[Address] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Address' THEN [A].[Address] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'City' THEN [A].[City] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'City' THEN [A].[City] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'State' THEN [A].[State] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'State' THEN [A].[State] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Zip_Code' THEN [A].[Zip_Code] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Zip_Code' THEN [A].[Zip_Code] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'RTN' THEN [A].[RTN] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'RTN' THEN [A].[RTN] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Audit_Number' THEN [A].[Audit_Number] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Audit_Number' THEN [A].[Audit_Number] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Scan_Number' THEN [A].[Scan_Number] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Scan_Number' THEN [A].[Scan_Number] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Amount_Claimed' THEN [A].[Amount_Claimed] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Amount_Claimed' THEN [A].[Amount_Claimed] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Results' THEN [A].[Results] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Results' THEN [A].[Results] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Date_Voucher_Sent' THEN [A].[Date_Voucher_Sent] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Date_Voucher_Sent' THEN [A].[Date_Voucher_Sent] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Return_ID_Number' THEN [A].[Return_ID_Number] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Return_ID_Number' THEN [A].[Return_ID_Number] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Suspense_Status' THEN [A].[Suspense_Status] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Suspense_Status' THEN [A].[Suspense_Status] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Funds_Requested' THEN [A].[Funds_Requested] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Funds_Requested' THEN [A].[Funds_Requested] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Funds_Actually_Given' THEN [A].[Funds_Requested] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Funds_Actually_Given' THEN [A].[Funds_Requested] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Voucher_or_Memo_Applied' THEN [A].[Voucher_or_Memo_Applied] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Voucher_or_Memo_Applied' THEN [A].[Voucher_or_Memo_Applied] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Current_User_Name' THEN [U].[SEID] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Current_User_Name' THEN [U].[SEID] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'AssigneeFirstName' THEN [U].[First_Name] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'AssigneeFirstName' THEN [U].[First_Name] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'AssigneeLastName' THEN [U].[Last_Name] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'AssigneeLastName' THEN [U].[Last_Name] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Assignee_Site' THEN [U].[Site] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Assignee_Site' THEN [U].[Site] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Current_Status_ID' THEN [A].[Current_Status_ID] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Current_Status_ID' THEN [A].[Current_Status_ID] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Status_Name' THEN [S].[Status_Name] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Status_Name' THEN [S].[Status_Name] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Deleted_Date' THEN [A].[Deleted_Date] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Deleted_Date' THEN [A].[Deleted_Date] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'comment' THEN [A].[comment] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'comment' THEN [A].[comment] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Original_Deposit_Date' THEN [A].[Original_Deposit_Date] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Original_Deposit_Date' THEN [A].[Original_Deposit_Date] END DESC
,CASE WHEN UPPER(@SortDirection) = 'ASC' AND @SortColumn = 'Original_Deposit_Amount' THEN [A].[Original_Deposit_Amount] END ASC
,CASE WHEN UPPER(@SortDirection) = 'DESC' AND @SortColumn = 'Original_Deposit_Amount' THEN [A].[Original_Deposit_Amount] END DESC
)
SELECT [Lead_ID]
,[Account_ID]
,[Organization]
,[Lead_Number]
,[Source]
,[Lead_Received_Date]
,[Calender_Year]
,[Amount_To_Recover]
,[Reason_For_Referral]
,[CustomerNumber]
,[AccountLastName]
,[AccountFirstName]
,[Name_On_Refund]
,[Address]
,[City]
,[State]
,[Zip_Code]
,[RTN]
,[Audit_Number]
,[Scan_Number]
,[Amount_Claimed]
,[Building_Number]
,[Results]
,[Date_Voucher_Sent]
,[Return_ID_Number]
,[Suspense_Status]
,[Funds_Requested]
,[Funds_Actually_Given]
,[Voucher_or_Memo_Applied]
,[Current_User_Name]
,[AssigneeFirstName]
,[AssigneeLastName]
,[AssigneeFullName]
,[Assignee_Site]
,[Current_Status_ID]
,[Status_Name]
,[Deleted_Date]
,[comment]
,[Original_Deposit_Date]
,[Original_Deposit_Amount]
FROM ACCOUNTS
WHERE (@StartingRow IS NULL OR ([ROWNUM] BETWEEN @StartingRow AND ((@StartingRow - 1) + @NumOfRowsToTake)))
END
GO
答案 0 :(得分：4)
SP永远不会像现在这样快;你正在改写。你可以做的唯一一件容易的事就是尝试WITH RECOMPILE / OPTION（RECOMPILE），这看起来像一个讨厌的编译。
考虑阅读Erland Sommarskog's article Dynamic Search Conditions in T‑SQL，其中详细讨论了这个一般情况。
老实说，你构建它的方式，你可能应该看sp_executesql并且每个变量都是一个参数传递给sp_executesql。
这样，你至少会为每个参数组合获得一个专用的查询计划，并且不会有无关的废话。
构建动态SQL语句时，只需使用WHERE和ORDER BY所需的部分，但不要将直接传递给SQL本身的值（不允许恶意用户注入SQL） ;将它们用作参数，或作为放入SQL块的IF语句的一部分。
然后删除您的非SARGable JOIN和WHERE部分，例如那些CHARINDEX() s - WHERE或JOIN中没有任何功能（甚至ORDER BY，如果可能的话），请，然后您的索引可以完成他们的工作！
对于@StartingRow和@NumRowsToTake分页，请考虑升级到SQL Server 2012或更高版本，并阅读Aaron Bertrand的Pagination with Offset Fetch;他对某些选项有一些很好的基准和指标。请注意，您甚至应该阅读SQL Server 2008的前几段，特别是
基于表的索引，所需的列以及所选的排序方法，分页可以相对轻松。如果您正在寻找“第一个”20个客户，并且聚簇索引支持该排序（例如，IDENTITY列或DateCreated列上的聚簇索引），那么查询将非常有效。如果您需要支持需要非聚集索引的排序，特别是如果索引未涵盖输出所需的列（更不用说没有支持索引），查询可能会变得更加昂贵。甚至相同的查询（使用不同的@PageNumber参数）也会因为@PageNumber变得更高而变得更加昂贵 - 因为可能需要更多读取来获取数据的“切片”。