重置臨時表的標識

Question

我目前正在開發一個SP，它爲系統帶回客戶列表。 SP根據尋呼帶回一定數量的數據。但是，我注意到由於我刪除了重複的記錄，所以要返回的總數據量是正確的。我需要能夠重新包含這些數據的臨時表。我嘗試了以下方法，但沒有奏效。

DBCC CHECKIDENT (#ReturnData, RESEED, 0) 

這是SP。

USE [SupplyCatalogDB] 
GO 
/****** Object: StoredProcedure [dbo].[CustomerLoadAllPaged] Script Date: 6/10/2014 8:33:16 AM ******/ 
SET ANSI_NULLS ON 
GO 
SET QUOTED_IDENTIFIER ON 
GO 
ALTER PROCEDURE [dbo].[CustomerLoadAllPaged] 
(
    @CustomerRoles nvarchar(20) = NULL, 
    @IsActive bit = NULL, 
    @Username nvarchar(1000) = NULL, 
    @FirstName nvarchar(MAX) = NULL, 
    @LastName nvarchar(MAX) = NULL, 
    @UnitId int = NULL, 
    @SortBy int = 0, --0 = CreatedOnUtc Asc, 1 = CreatedOnUtc Desc, 2 = Username Asc, 3 = Username Desc, 
    --4 = CustomerName Asc, 5 = CustomerName Desc, 6 = Unit Asc, 7 = Unit Desc, 8 = CustomerRoles Asc, 
    --9 = CustomerRoles Desc, 10 = Active Asc, 11 = Active Desc, 12 = LastActivityOnUtc Asc, 
    --13 = LastActivityOnUtc Desc, 14 = Location Asc, 15 = Location Desc, 16 = TM Asc, 17 = TM Desc, 
    --18 = Phone Asc, 19 = Phone Desc 
    @PageIndex int = 0, 
    @PageSize int = 2147483644, 
    @TotalRecords int = null OUTPUT 
) 
AS 
BEGIN 
    DECLARE @SQL nvarchar(MAX) 
--paging 
DECLARE @PageLowerBound int 
DECLARE @PageUpperBound int 
DECLARE @RowsToReturn int 
SET @RowsToReturn = @PageSize * (@PageIndex + 1)  
SET @PageLowerBound = @PageSize * @PageIndex 
SET @PageUpperBound = @PageLowerBound + @PageSize + 1 

--Create table to store Customer Role Ids 
CREATE TABLE #Roles 
(
    CustomerRoleId int 
) 

--Check to see if there is any Customer Roles to search on 
IF @CustomerRoles IS NOT NULL 
BEGIN 
    INSERT INTO #Roles 
     SELECT CAST(data as int) FROM [nop_splitstring_to_table](@CustomerRoles, ',') 
END 

CREATE TABLE #ReturnData 
(
    Id int IDENTITY (1, 1) NOT NULL, 
    CustomerId int, 
    FullName nvarchar(MAX), 
    Username nvarchar(1000), 
    UnitId int, 
    UnitName nvarchar(MAX), 
    CustomerRoles nvarchar(MAX), 
    AddressId int, 
    Location nvarchar(MAX), 
    TM nvarchar(MAX), 
    Phone nvarchar(MAX), 
    Active bit, 
    CreatedOnUtc datetime, 
    LastActivityDateUtc datetime, 
    CustomerGuid uniqueidentifier, 
    Email nvarchar(1000), 
    [Password] nvarchar(MAX), 
    PasswordFormatId int, 
    PasswordSalt nvarchar(MAX), 
    AdminComment nvarchar(MAX), 
    LanguageId int, 
    CurrencyId int, 
    TaxDisplayTypeId int, 
    IsTaxExempt bit, 
    VatNumber nvarchar(MAX), 
    VatNumberStatusId int, 
    SelectedPaymentMethodSystemName nvarchar(MAX), 
    CheckoutAttributes nvarchar(MAX), 
    DiscountCouponCode nvarchar(MAX), 
    GiftCardCouponCodes nvarchar(MAX), 
    UseRewardPointsDuringCheckout bit, 
    TimeZoneId nvarchar(MAX), 
    AffiliateId int, 
    Deleted bit, 
    IsSystemAccount bit, 
    SystemName nvarchar(MAX), 
    LastIpAddress nvarchar(MAX), 
    LastLoginDateUtc datetime, 
    OldEmployeeId int, 
    OldId int, 
    BillingAddress_Id int, 
    ShippingAddress_Id int, 
    CJISBillingAddress_Id int, 
    CJISShippingAddress_Id int 
) 

SET @SQL = 'INSERT INTO #ReturnData 
       SELECT Distinct C.Id AS CustomerId, IsNULL(dbo.GetFullName(C.Id), '''') AS FullName, 
        C.Username, C.UnitId, dbo.GetUnitText(C.UnitId) AS UnitName, 
        dbo.GetCustomerRoles(C.Id) AS CustomerRoles, CA.Id AS AddressId, 
        CA.Location, CA.TM, CA.Phone, C.Active, C.CreatedOnUtc, C.LastActivityDateUtc, 
        C.CustomerGuid, C.Email, C.[Password], C.PasswordFormatId, 
        C.PasswordSalt, C.AdminComment, C.LanguageId, C.CurrencyId, 
        C.TaxDisplayTypeId, C.IsTaxExempt, C.VatNumber, C.VatNumberStatusId, 
        C.SelectedPaymentMethodSystemName, C.CheckoutAttributes, 
        C.DiscountCouponCode, C.GiftCardCouponCodes, C.UseRewardPointsDuringCheckout, 
        C.TimeZoneId, C.AffiliateId, C.Deleted, C.IsSystemAccount, C.SystemName, 
        C.LastIpAddress, C.LastLoginDateUtc, C.OldEmployeeId, C.OldId, 
        C.BillingAddress_Id, C.ShippingAddress_Id, C.CJISBillingAddress_Id, 
        C.CJISShippingAddress_Id 
       FROM Customer C 
        LEFT JOIN Customer_CustomerRole_Mapping CCRM ON C.Id = CCRM.Customer_Id 
        LEFT JOIN CustomerCJISAddresses CCA ON C.Id = CCA.Customer_Id 
        LEFT JOIN CJISAddress CA ON CCA.CJISAddress_Id = CA.Id 
         AND CA.IsPrimary = 1 
        LEFT JOIN GenericAttribute GA ON GA.KeyGroup = ''Customer'' 
         AND (GA.[Key] = ''FirstName'' OR GA.[Key] = ''LastName'') 
         AND C.Id = GA.EntityId ' 

IF @CustomerRoles IS NOT NULL 
BEGIN 
    SET @SQL = @SQL + 'WHERE CCRM.CustomerRole_Id IN (SELECT CustomerRoleId FROM #Roles) ' 
END 

IF @IsActive IS NOT NULL 
BEGIN 
    --Do a check to see if the 'Where' clause already exists 
    IF dbo.GetWhereCheck(@SQL) = 1 
    BEGIN 
     SET @SQL = @SQL + 'AND C.Active = @IsActive ' 
    END 
    --'Where' clause doesn't exist yet 
    ELSE 
    BEGIN 
     SET @SQL = @SQL + 'WHERE C.Active = @IsActive ' 
    END 
END 

IF @Username IS NOT NULL 
BEGIN 
    --Do a check to see if the 'Where' clause already exists 
    IF dbo.GetWhereCheck(@SQL) = 1 
    BEGIN 
     SET @SQL = @SQL + 'AND C.Username LIKE ''' + @Username + ''' ' 
    END 
    --'Where' clause doesn't exist yet 
    ELSE 
    BEGIN 
     SET @SQL = @SQL + 'WHERE C.Username LIKE ''' + @Username + ''' ' 
    END 
END 

IF @FirstName IS NOT NULL 
BEGIN 
    --Do a check to see if the 'Where' clause already exists 
    IF dbo.GetWhereCheck(@SQL) = 1 
    BEGIN 
     SET @SQL = @SQL + 'AND (GA.[Key] = ''FirstName'' AND GA.[Value] LIKE ''' + @FirstName + ''') ' 
    END 
    --'Where' clause doesn't exist yet 
    ELSE 
    BEGIN 
     SET @SQL = @SQL + 'WHERE (GA.[Key] = ''FirstName'' AND GA.[Value] LIKE ''' + @FirstName + ''') ' 
    END 
END 

IF @LastName IS NOT NULL 
BEGIN 
    --Do a check to see if the 'Where' clause already exists 
    IF dbo.GetWhereCheck(@SQL) = 1 
    BEGIN 
     SET @SQL = @SQL + 'AND (GA.[Key] = ''LastName'' AND GA.[Value] LIKE ''' + @LastName + ''') ' 
    END 
    --'Where' clause doesn't exist yet 
    ELSE 
    BEGIN 
     SET @SQL = @SQL + 'WHERE (GA.[Key] = ''LastName'' AND GA.[Value] LIKE ''' + @LastName + ''') ' 
    END 
END 

IF @UnitId IS NOT NULL 
BEGIN 
    --Do a check to see if the 'Where' clause already exists 
    IF dbo.GetWhereCheck(@SQL) = 1 
    BEGIN 
     SET @SQL = @SQL + 'AND C.UnitId = @UnitId ' 
    END 
    --'Where' clause doesn't exist yet 
    ELSE 
    BEGIN 
     SET @SQL = @SQL + 'WHERE C.UnitId = @UnitId ' 
    END 
END 

--Do Order By 
DECLARE @OrderByText nvarchar(50) 
SET @OrderByText = 'Order By ' 
SET @OrderByText = @OrderByText + 
    CASE 
     WHEN @SortBy = 0 THEN 'C.CreatedOnUtc DESC' 
     WHEN @SortBy = 1 THEN 'C.CreatedOnUtc ASC' 
     WHEN @SortBy = 2 THEN 'C.Username ASC' 
     WHEN @SortBy = 3 THEN 'C.Username DESC' 
     WHEN @SortBy = 4 THEN 'FullName ASC' 
     WHEN @SortBy = 5 THEN 'FullName DESC' 
     WHEN @SortBy = 6 THEN 'UnitName ASC' 
     WHEN @SortBy = 7 THEN 'UnitName DESC' 
     WHEN @SortBy = 8 THEN 'CustomerRoles ASC' 
     WHEN @SortBy = 9 THEN 'CustomerRoles DESC' 
     WHEN @SortBy = 10 THEN 'C.Active ASC' 
     WHEN @SortBy = 11 THEN 'C.Active DESC' 
     WHEN @SortBy = 12 THEN 'C.LastActivityDateUtc ASC' 
     WHEN @SortBy = 13 THEN 'C.LastActivityDateUtc DESC' 
     WHEN @SortBy = 14 THEN 'CA.Location ASC' 
     WHEN @SortBy = 15 THEN 'CA.Location DESC' 
     WHEN @SortBy = 16 THEN 'CA.TM ASC' 
     WHEN @SortBy = 17 THEN 'CA.TM DESC' 
     WHEN @SortBy = 18 THEN 'CA.Phone ASC' 
     WHEN @SortBy = 19 THEN 'CA.Phone DESC' 
END; 

SET @SQL = @SQL + @OrderByText 

EXEC sp_executesql @SQL, 
N'@IsActive bit, @UnitId int', 
@IsActive, @UnitId 

DECLARE @DuplicateFields int 
SET @TotalRecords = @@ROWCOUNT 

DELETE FROM dupes 
FROM #ReturnData dupes, 
    #ReturnData fullTable 
WHERE dupes.CustomerId = fullTable.CustomerId 
    AND dupes.AddressId IS NULL 
    AND dupes.Id < fullTable.Id 

SET @DuplicateFields = @@ROWCOUNT 
SET @TotalRecords = @TotalRecords - @DuplicateFields 

DBCC CHECKIDENT (#ReturnData, RESEED, 0) 

SELECT TOP (@RowsToReturn) CustomerId AS Id, 
    Username, UnitId, Active, CreatedOnUtc, 
    LastActivityDateUtc, CustomerGuid, 
    Email, [Password], PasswordFormatId, PasswordSalt, 
    AdminComment, LanguageId, CurrencyId, TaxDisplayTypeId, 
    IsTaxExempt, VatNumber, VatNumberStatusId, 
    SelectedPaymentMethodSystemName, CheckoutAttributes, 
    DiscountCouponCode, GiftCardCouponCodes, 
    UseRewardPointsDuringCheckout, TimeZoneId, AffiliateId, 
    Deleted, IsSystemAccount, SystemName, LastIpAddress, 
    LastLoginDateUtc, OldEmployeeId, OldId, BillingAddress_Id, 
    ShippingAddress_Id, CJISBillingAddress_Id, 
    CJISShippingAddress_Id 
FROM #ReturnData 
WHERE Id > @PageLowerBound 
    AND Id < @PageUpperBound 

DROP TABLE #Roles 
DROP TABLE #ReturnData 
END 

Answer 1

只需使用標識列有ROW_NUMBER()無間隙生成號碼，然後查詢基於行號，而不是Id列：

;With OrderedRows as (
    SELECT CustomerId AS Id, 
    Username, UnitId, Active, CreatedOnUtc, 
    LastActivityDateUtc, CustomerGuid, 
    Email, [Password], PasswordFormatId, PasswordSalt, 
    AdminComment, LanguageId, CurrencyId, TaxDisplayTypeId, 
    IsTaxExempt, VatNumber, VatNumberStatusId, 
    SelectedPaymentMethodSystemName, CheckoutAttributes, 
    DiscountCouponCode, GiftCardCouponCodes, 
    UseRewardPointsDuringCheckout, TimeZoneId, AffiliateId, 
    Deleted, IsSystemAccount, SystemName, LastIpAddress, 
    LastLoginDateUtc, OldEmployeeId, OldId, BillingAddress_Id, 
    ShippingAddress_Id, CJISBillingAddress_Id, 
    CJISShippingAddress_Id, 
    ROW_NUMBER() OVER (ORDER BY Id) as rn 
FROM #ReturnData 
) 
select * from OrderedRows where 
WHERE rn > @PageLowerBound 
    AND rn < @PageUpperBound 

---

示威，降列/添加列方法並不總是工作。測試了我的機器上有大部分是空的數據庫（和當然，沒有保證，它將100％其他機器重現礦的Windows 7 64-但是，SQL Server 2012中）：

create table #T (ID int IDENTITY(1,1) not null,rn int not null, 
       SpaceWaster char(900) not null) 
;With PlentyRows as (
    select ROW_NUMBER() OVER (ORDER BY so1.object_id) as rn 
    from sys.objects so1,sys.objects so2,sys.objects so3 
) 
insert into #T (rn,SpaceWaster) 
select rn,'' from PlentyRows 
order by rn 

select * from #T where rn!=ID 

alter table #T drop column id 
alter table #T add ID int IDENTITY(1,1) not null 

select * from #T where rn!=ID 

drop table #T 

這第一select * from #T where rn!=ID總是產生一個空結果集，然後對於第二個結果集，它返回所有行，其中第一個具有2177的rn和ID爲1.