自SQLSERVER 2008 起新增的RowNumber确实简化了很多分页的代码，目前百万数据中
RowNumber 配合颠倒Top仍然是最佳实践
现在项目上的搜索比较恶心，主表与从表是个一对多关系，搜索条件里可能带有从表数据，并将符合结果的主表数据以及第一条从表数据（按创建时间排序）取出，注意主表数据不能因为inner join而重复。
像这么恶心的搜索我还是第一次遇到，听说还有种动态视图（可创建自适应索引），但我没去试，还是用了个比较靠谱的，思路如下：
如果无从表搜索，则直接搜索主表，取出分页数，并join 从表
如果有从表，则只能先join再分页。值得一提的是分页排序规则是根据当前页数与总页数相比较得到（所以要先得到总页数）
而从表只取第一条我们也可以巧妙得在RowNumber 中用关键字 PARTITION BY 来达成
最后结果，百万数据的两表join 搜索都在1秒内，部分字段的StartWith搜索也只需要2秒
最后贴出代码，索引啥就不贴了
有从表查询：
1 USE [GEMS_DM] 2 GO 3 /****** Object: StoredProcedure [dbo].[P_PM_SearchPatronByHasIdentifyCriteria] Script Date: 12/23/2013 16:38:41 ******/ 4 SET ANSI_NULLS ON 5 GO 6 SET QUOTED_IDENTIFIER ON 7 GO 8 9 10 11 12 13 14 15 16 17 18 19 ALTER PROCEDURE [dbo].[P_PM_SearchPatronByHasIdentifyCriteria] 20 @IsActive bit = NULL, 21 @PatronNo bigint=NULL, 22 @BirthDate date=NULL, 23 @PNFirstName nvarchar(50)=NULL, 24 @PNMiddleName nvarchar(50)=NULL, 25 @PNLastName nvarchar(50)=NULL, 26 @PreferredName nvarchar(40)=NULL, 27 @EXFirstName nvarchar(50)=NULL, 28 @EXLastName nvarchar(50)=NULL, 29 @DisplayNameType nvarchar(30)=NULL, 30 @Gender nvarchar(5)=NULL, 31 @MobileCountryCode nvarchar(5)=NULL, 32 @Mobile nvarchar(15)=NULL, 33 @Email nvarchar(30)=NULL, 34 @MembershipClass nvarchar(30)=Null, 35 @IDType nvarchar(5)=NULL, 36 @IDNumber nvarchar(20)=NULL, 37 @CountryID smallint=NULL, 38 @CityName nvarchar(50)=NULL, 39 @DocType nvarchar(5)='', 40 @Page int = 1, 41 @PageSize int = 10, 42 @OrderSQL nvarchar(max)=null, 43 @TotalRow int output 44 45 46 47 -- Add the parameters for the stored procedure here 48 as 49 BEGIN 50 51 SET NOCOUNT ON; 52 SET FMTONLY OFF 53 54 55 declare @Start nvarchar(20),@End nvarchar(20),@RowNumberSQL nvarchar(200),@BetweenSQL nvarchar(100), 56 @rowCountSql nvarchar(max); 57 IF (@Page is null) or (@Page <= 0) 58 SET @Page = 1 59 IF (@PageSize is null) or (@PageSize <=0) 60 SET @PageSize = 10 61 SET @Start=CONVERT(nvarchar(10),(@Page-1)*@PageSize+1); 62 SET @End=CONVERT(nvarchar(10),(@Page)*@PageSize); 63 Set @BetweenSQL = ' ROWNUMVE BETWEEN {Start} AND {End} '; 64 65 set @RowNumberSQL = ' ROW_NUMBER() over (order by Patron_No {0} ) AS ROWNUMVE'; 66 67 68 declare @PatronTableSql nvarchar(max),@IdentificationTableSql nvarchar(max),@sqlwhere nvarchar(max), 69 @FinalPatronTableSql nvarchar(max) 70 71 set @PatronTableSql = 'SELECT Patron_ID AS PatronID,Patron_No AS PatronNo,PN_First_Name AS PNFirstName,PN_Middle_Name as PNMiddleName,PN_Last_Name AS PNLastName, 72 Preferred_Name AS PreferredName,EX_First_Name AS EXFirstName,EX_Last_Name AS EXLastName,Birth_Date AS BirthDate, 73 IsActive,IsMerged,Gender,Membership_Class AS MembershipClass,eMail,Mobile_Country_Code AS MobileCountryCode, 74 Mobile_No AS MobileNo,Doc_ID as DocID,Patron_No as Patron_No FROM GSMA_Patron '; 75 if(@PatronNo is not null) 76 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('Patron_No=',@PatronNo)); 77 if(@BirthDate is not null) 78 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('Birth_Date=''',@BirthDate,'''')); 79 if(@IsActive is not null) 80 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('IsActive=',@IsActive)); 81 if(@PNFirstName is not null) 82 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('PN_First_Name like N''',@PNFirstName,'%''')); 83 if(@PNMiddleName is not null) 84 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('PN_Middle_Name like N''',@PNMiddleName,'%''')); 85 if(@PNLastName is not null) 86 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('PN_Last_Name like N''',@PNLastName,'%''')); 87 if(@PreferredName is not null) 88 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('Preferred_Name like N''',@PreferredName,'%''')); 89 if(@EXFirstName is not null) 90 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('EX_First_Name like N''',@EXFirstName+'%''')); 91 if(@EXLastName is not null) 92 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('EX_Last_Name like N''',@EXLastName,'%''')); 93 if(@Gender is not null) 94 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('Gender = N''',@Gender,'''')); 95 if(@MembershipClass is not null) 96 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('Membership_Class in (''',Replace(@MembershipClass,',',''','''),''')')); 97 if(@Email is not null) 98 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('eMail like N''',@Email+'%''')); 99 100 if(@sqlwhere is not null and @sqlwhere <> '') 101 set @PatronTableSql = concat(@PatronTableSql,' where ',@sqlwhere); 102 set @FinalPatronTableSql = concat('(',@PatronTableSql,') A '); 103 104 105 --reset @sqlwhere for Identification filter 106 set @sqlwhere = ' IsActive = 1 '; 107 108 set @IdentificationTableSql = '(SELECT IDType,IDNo,Patron_ID,CountryID,CityName From 109 (SELECT ID_Type as IDType,ID_No as IDNo,Patron_ID, 110 Country_ID AS CountryID,City_Name as CityName 111 ,ROW_NUMBER() OVER(PARTITION BY Patron_ID ORDER BY ISNULL(Modified_Date,Created_Date) DESC) AS RK FROM GSMA_Patron_Identification WHERE '; 112 if(@IDType is not null) 113 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('ID_Type=N''',@IDType,'''')); 114 if(@IDNumber is not null) 115 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('ID_No like N''',@IDNumber,'%''')); 116 if(@CountryID is not null) 117 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('Country_ID=',@CountryID)); 118 if(@CityName is not null) 119 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('City_Name like N''',@CityName,'%''')); 120 set @IdentificationTableSql = concat(@IdentificationTableSql,@sqlwhere,') ID WHERE RK = 1 ) B '); 121 122 declare @PISql nvarchar(max) = concat('Select * from 123 (Select * {0} from ',char(10),@FinalPatronTableSql,char(10),' inner join',char(10),@IdentificationTableSql,' 124 ON A.PatronID = B.Patron_ID) PLI ') 125 126 -- remove template string and get total count sql 127 set @rowCountSql = concat('Select @rowCount = count(1) from (',REPLACE(@PISql,'{0}',''),') WS '); 128 -- add paging rownumber 129 set @PISql = REPLACE(@PISql,'{0}',concat(',',@RowNumberSQL)) 130 -- add between sql 131 set @PISql = concat(@PISql,' WHERE ',@BetweenSQL); 132 set @PISql = concat('(',@PISql,') PI'); 133 134 declare @pageSql nvarchar(max) = concat('SELECT PI.PatronID,PI.PatronNo,PI.PNFirstName,PI.PNMiddleName,PI.PNLastName,PI.PreferredName,PI.EXFirstName, 135 PI.EXLastName,PI.BirthDate,G.Lkp_Value as GenderName,PI.MembershipClass,M.Lkp_Value as MembershipClassName, 136 PI.MobileCountryCode,PI.MobileNo,PI.eMail,PI.IsActive,PI.IsMerged,I.Lkp_Value as IDTypeName,PI.IDNo, C.Country_Name as CountryName, 137 PI.CityName, D.[FileName],T.Tier_ID as TierID, T.Security_level as Securitylevel,PC.Club_Name as ClubName FROM ',@PISql,char(10), 138 'left join (SELECT [File_Name] as [FileName],Doc_ID FROM GSAL_Document_Detail WHERE IsActive = 1 AND Doc_Type = ''DOCPH'') D 139 on PI.DocID = D.Doc_ID 140 left join (Select Lkp_Value,Lookup_Cd FROM GSRE_GenLKP) G on PI.Gender =G.Lookup_Cd 141 left join (Select Lkp_Value,Lookup_Cd FROM GSRE_GenLKP) M on PI.MembershipClass =M.Lookup_Cd 142 left join (Select Lkp_Value,Lookup_Cd FROM GSRE_GenLKP) I on PI.IDType =I.Lookup_Cd 143 left join (Select Country_ID,Country_Name FROM GSRE_Country) C on PI.CountryID =C.Country_ID 144 left join (Select Patron_ID,Tier_ID FROM GSPM_Patron_Tier WHERE IsActive=1) PT on PI.PatronID = PT.Patron_ID 145 join (Select Tier_ID,Club_ID,Security_level FROM GSRE_Tier) T on PT.Tier_ID=T.Tier_ID 146 left join (Select Club_Name,Club_ID FROM GSRE_Club where IsActive=1) PC on T.Club_ID = PC.Club_ID ') 147 148 Execute sp_executesql @rowCountSql, N'@rowCount int output', @TotalRow output; 149 150 if((@TotalRow/(@PageSize * 2)) >= @Page) 151 begin 152 set @pageSql = REPLACE(@pageSql,'{0}',' asc '); 153 set @pageSql = REPLACE(@pageSql,'{Start}',@Start); 154 set @pageSql = REPLACE(@pageSql,'{End}',@End); 155 end 156 else 157 begin 158 set @pageSql = REPLACE(@pageSql,'{0}',' desc '); 159 set @pageSql = REPLACE(@pageSql,'{Start}',@TotalRow - @End + 1); 160 set @pageSql = REPLACE(@pageSql,'{End}',@TotalRow - @Start + 1); 161 set @pageSql = concat(' select * from (',@pageSql,') DE order by PatronNo asc'); 162 end 163 exec (@pageSql) 164 END
无从表查询：
1 USE [GEMS_DM] 2 GO 3 /****** Object: StoredProcedure [dbo].[P_PM_SearchPatronByNoIdentifyCriteria] Script Date: 12/23/2013 16:41:24 ******/ 4 SET ANSI_NULLS ON 5 GO 6 SET QUOTED_IDENTIFIER ON 7 GO 8 9 10 11 12 13 14 15 16 17 ALTER PROCEDURE [dbo].[P_PM_SearchPatronByNoIdentifyCriteria] 18 @IsActive bit = NULL, 19 @PatronNo bigint=NULL, 20 @BirthDate date=NULL, 21 @PNFirstName nvarchar(50)=NULL, 22 @PNMiddleName nvarchar(50)=NULL, 23 @PNLastName nvarchar(50)=NULL, 24 @PreferredName nvarchar(40)=NULL, 25 @EXFirstName nvarchar(50)=NULL, 26 @EXLastName nvarchar(50)=NULL, 27 @Gender nvarchar(5)=NULL, 28 @MobileCountryCode nvarchar(5)=NULL, 29 @Mobile nvarchar(15)=NULL, 30 @Email nvarchar(30)=NULL, 31 @MembershipClass nvarchar(30)=Null, 32 @DocType nvarchar(5)='', 33 @Page int = 1, 34 @PageSize int = 10, 35 @OrderSQL nvarchar(max)=null, 36 @TotalRow int output 37 38 39 40 -- Add the parameters for the stored procedure here 41 as 42 BEGIN 43 44 SET NOCOUNT ON; 45 SET FMTONLY OFF 46 47 48 declare @Start nvarchar(20),@End nvarchar(20),@RowNumberSQL nvarchar(200),@BetweenSQL nvarchar(100), 49 @rowCountSql nvarchar(max) 50 IF (@Page is null) or (@Page <= 0) 51 SET @Page = 1 52 IF (@PageSize is null) or (@PageSize <=0) 53 SET @PageSize = 10 54 SET @Start=CONVERT(nvarchar(10),(@Page-1)*@PageSize+1); 55 SET @End=CONVERT(nvarchar(10),(@Page)*@PageSize); 56 Set @BetweenSQL = ' ROWNUMVE BETWEEN {Start} AND {End} '; 57 set @RowNumberSQL = ' ROW_NUMBER() over (order by Patron_No {0} ) AS ROWNUMVE'; 58 59 60 declare @PatronTableSql nvarchar(max),@IdentificationTableSql nvarchar(max),@sqlwhere nvarchar(max), 61 @FinalPatronTableSql nvarchar(max) 62 63 set @PatronTableSql = 'SELECT Patron_ID AS PatronID,Patron_No AS PatronNo,PN_First_Name AS PNFirstName,PN_Middle_Name as PNMiddleName,PN_Last_Name AS PNLastName, 64 Preferred_Name AS PreferredName,EX_First_Name AS EXFirstName,EX_Last_Name AS EXLastName,Birth_Date AS BirthDate, 65 IsActive,IsMerged,Gender,Membership_Class AS MembershipClass,eMail,Mobile_Country_Code AS MobileCountryCode, 66 Mobile_No AS MobileNo,Doc_ID as DocID {0} FROM GSMA_Patron '; 67 if(@PatronNo is not null) 68 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('Patron_No=',@PatronNo)); 69 if(@BirthDate is not null) 70 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('Birth_Date=''',@BirthDate,'''')); 71 if(@IsActive is not null) 72 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('IsActive=',@IsActive)); 73 if(@PNFirstName is not null) 74 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('PN_First_Name like N''',@PNFirstName,'%''')); 75 if(@PNMiddleName is not null) 76 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('PN_Middle_Name like N''',@PNMiddleName,'%''')); 77 if(@PNLastName is not null) 78 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('PN_Last_Name like N''',@PNLastName,'%''')); 79 if(@PreferredName is not null) 80 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('Preferred_Name like N''',@PreferredName,'%''')); 81 if(@EXFirstName is not null) 82 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('EX_First_Name like N''',@EXFirstName+'%''')); 83 if(@EXLastName is not null) 84 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('EX_Last_Name like N''',@EXLastName,'%''')); 85 if(@Gender is not null) 86 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('Gender = N''',@Gender,'''')); 87 if(@MembershipClass is not null) 88 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('Membership_Class in (''',Replace(@MembershipClass,',',''','''),''')')); 89 if(@Email is not null) 90 set @sqlwhere = dbo.F_CombineWhereSql(@sqlwhere,concat('eMail like N''',@Email+'%''')); 91 92 if(@sqlwhere is not null and @sqlwhere <> '') 93 set @PatronTableSql = concat(@PatronTableSql,' where ',@sqlwhere); 94 95 -- remove template string and get total account from patron search 96 set @rowCountSql = concat('Select @rowCount = count(1) from (',REPLACE(@PatronTableSql,'{0}',''),') WS '); 97 -- add paging rownumber column when select Patron 98 set @PatronTableSql = REPLACE(@PatronTableSql,'{0}',concat(',',@RowNumberSQL)); 99 -- set final patron table search sql 100 set @FinalPatronTableSql = concat('Select PatronID,PatronNo,PNFirstName,PNMiddleName,PNLastName,PreferredName,EXFirstName, 101 EXLastName,BirthDate,IsActive,IsMerged,Gender,MembershipClass,eMail,MobileCountryCode,MobileNo,DocID 102 From (',@PatronTableSql,') P WHERE ',@BetweenSQL); 103 set @FinalPatronTableSql = concat('(',@FinalPatronTableSql,') A '); 104 105 106 set @IdentificationTableSql = '(SELECT ID_Type as IDType,ID_No as IDNo,Patron_ID, 107 Country_ID AS CountryID,City_Name as CityName,ISNULL(Modified_Date,Created_Date) as SortDate FROM GSMA_Patron_Identification WHERE IsActive = 1) B'; 108 109 110 declare @PISql nvarchar(max) 111 set @PISql = concat('(Select PatronID,PatronNo,PNFirstName,PNMiddleName,PNLastName,PreferredName,EXFirstName, 112 EXLastName,BirthDate,IsActive,IsMerged,Gender,MembershipClass,eMail,MobileCountryCode,MobileNo,DocID, 113 IDType,IDNo,CountryID,CityName From 114 (Select A.*,B.IDType,B.IDNo,B.CountryID,B.CityName, 115 ROW_NUMBER() OVER(PARTITION BY PatronID ORDER BY SortDate DESC) AS RK from ' 116 ,char(10),@FinalPatronTableSql,char(10),' Left join ',char(10),@IdentificationTableSql,' 117 ON A.PatronID = B.Patron_ID) PLI WHERE RK=1 ) PI') 118 119 declare @pageSql nvarchar(max) = concat('SELECT PI.PatronID,PI.PatronNo,PI.PNFirstName,PI.PNMiddleName,PI.PNLastName,PI.PreferredName,PI.EXFirstName, 120 PI.EXLastName,PI.BirthDate,G.Lkp_Value as GenderName,PI.MembershipClass,M.Lkp_Value as MembershipClassName, 121 PI.MobileCountryCode,PI.MobileNo,PI.eMail,PI.IsActive,PI.IsMerged,I.Lkp_Value as IDTypeName,PI.IDNo, C.Country_Name as CountryName, 122 PI.CityName, D.[FileName],T.Tier_ID as TierID, T.Security_level as Securitylevel,PC.Club_Name as ClubName FROM ',@PISql,char(10), 123 'left join (SELECT [File_Name] as [FileName],Doc_ID FROM GSAL_Document_Detail WHERE IsActive = 1 AND Doc_Type = ''DOCPH'') D 124 on PI.DocID = D.Doc_ID 125 left join (Select Lkp_Value,Lookup_Cd FROM GSRE_GenLKP) G on PI.Gender =G.Lookup_Cd 126 left join (Select Lkp_Value,Lookup_Cd FROM GSRE_GenLKP) M on PI.MembershipClass =M.Lookup_Cd 127 left join (Select Lkp_Value,Lookup_Cd FROM GSRE_GenLKP) I on PI.IDType =I.Lookup_Cd 128 left join (Select Country_ID,Country_Name FROM GSRE_Country) C on PI.CountryID =C.Country_ID 129 left join (Select Patron_ID,Tier_ID FROM GSPM_Patron_Tier WHERE IsActive=1) PT on PI.PatronID = PT.Patron_ID 130 join (Select Tier_ID,Club_ID,Security_level FROM GSRE_Tier) T on PT.Tier_ID=T.Tier_ID 131 left join (Select Club_Name,Club_ID FROM GSRE_Club where IsActive=1) PC on T.Club_ID = PC.Club_ID ') 132 133 Execute sp_executesql @rowCountSql, N'@rowCount int output', @TotalRow output; 134 135 if((@TotalRow/(@PageSize * 2)) >= @Page) 136 begin 137 set @pageSql = REPLACE(@pageSql,'{0}',' asc '); 138 set @pageSql = REPLACE(@pageSql,'{Start}',@Start); 139 set @pageSql = REPLACE(@pageSql,'{End}',@End); 140 end 141 else 142 begin 143 set @pageSql = REPLACE(@pageSql,'{0}',' desc '); 144 set @pageSql = REPLACE(@pageSql,'{Start}',@TotalRow - @End + 1); 145 set @pageSql = REPLACE(@pageSql,'{End}',@TotalRow - @Start + 1); 146 set @pageSql = concat(' select * from (',@pageSql,') DE order by PatronNo asc'); 147 end 148 exec (@pageSql) 149 END
顺带最后一提：动态SQL的性能和普通SQL没区别