三种SQL分页查询的存储过程

 

--根据MAX(MIN)ID
CREATE PROC [dbo].[proc_select_id]
@pageindex int =1, --当前页数
@pagesize int =10, --每页大小
@tablename VARCHAR (50)= '' , --表名
@fields VARCHAR (1000)= '' , --查询的字段集合
@keyid VARCHAR (50)= '' , --主键
@condition NVARCHAR(1000)= '' , --查询条件
@orderstr VARCHAR (500), --排序条件
@totalRecord BIGINT OUTPUT --总记录数
AS
    IF ISNULL (@orderstr,N '' )=N '' SET @orderstr=N ' ORDER BY ' +@keyid+N ' DESC '
    IF ISNULL (@fields,N '' )=N '' SET @fields=N '*'
    IF ISNULL (@condition,N '' )=N '' SET @condition=N '1=1'
    DECLARE @sql NVARCHAR(4000)
    --IF(@totalRecord IS NULL)
    --BEGIN
        SET @sql=N 'SELECT @totalRecord=COUNT(*)'
            +N ' FROM ' +@tablename
            +N ' WHERE ' +@condition
        EXEC sp_executesql @sql,N '@totalRecord INT OUTPUT' ,@totalRecord OUTPUT
    --END
    IF(@pageindex=1)
    BEGIN
        SET @sql=N 'SELECT TOP ' +STR(@pagesize)+N ' ' +@fields+N ' FROM ' +@tablename+N ' WHERE ' +@condition+N ' ' +@orderstr
        EXEC (@sql)
    END
    ELSE
    BEGIN
        DECLARE @operatestr CHAR (3),@comparestr CHAR (1)
        SET @operatestr= 'MAX'
        SET @comparestr= '>'
        IF(@orderstr<> '' )
        BEGIN
            IF(CHARINDEX( 'desc' , LOWER (@orderstr))<>0)
            BEGIN
                SET @operatestr= 'MIN'
                SET @comparestr= '<'
            END
        END
        SET @sql=N 'SELECT top ' +STR(@pagesize)+N ' ' +@fields+N ' FROM ' +@tablename+N ' WHERE ' +@keyid+@comparestr
            +N '(SELECT ' +@operatestr+N '(' +@keyid+N ') FROM ' +@tablename+N ' WHERE ' +@keyid
            +N ' IN (SELECT TOP ' +STR((@pageindex-1)*@pagesize)+N ' ' +@keyid+N ' FROM ' +@tablename+N ' WHERE '
            +@condition+N ' ' +@orderstr+N ')) AND ' +@condition+N ' ' +@orderstr
        EXEC (@sql)
    END
GO


--根据ROW_NUMBER() OVER
CREATE PROC [dbo].[proc_select_page_row]
@pageindex INT =1, --当前页数
@pagesize INT =10, --每页大小
@tablename VARCHAR (50)= '' , --表名
@fields VARCHAR (1000)= '*' , --查询的字段集合
@keyid VARCHAR (50)= '' , --主键
@condition NVARCHAR(1000)= '' , --查询条件
@orderstr VARCHAR (500), --排序条件
@totalRecord BIGINT  OUTPUT --总记录数
AS
    IF ISNULL (@orderstr,N '' )=N '' SET @orderstr=N ' ORDER BY ' +@keyid+N ' DESC '
    IF ISNULL (@fields,N '' )=N '' SET @fields=N '*'
    IF ISNULL (@condition,N '' )=N '' SET @condition=N '1=1'
    DECLARE @sql NVARCHAR(4000)
--  IF @totalRecord IS NULL
--  BEGIN
        SET @sql=N 'SELECT @totalRecord=COUNT(*)'
            +N ' FROM ' +@tablename
            +N ' WHERE ' +@condition
        EXEC sp_executesql @sql,N '@totalRecord bigint OUTPUT' ,@totalRecord OUTPUT
--END
    IF(@pageindex=1)
    BEGIN
        SET @sql=N 'SELECT TOP ' +STR(@pagesize)+N ' ' +@fields+N ' FROM ' +@tablename+N ' WHERE ' +@condition+N ' ' +@orderstr
        EXEC (@sql)
    END
    ELSE
    BEGIN
        DECLARE @StartRecord INT
        SET @StartRecord = (@pageindex-1)*@pagesize + 1
        SET @sql=N 'SELECT * FROM (SELECT ROW_NUMBER() OVER (' + @orderstr +N ') AS rowId,' +@fields+N ' FROM ' + @tablename+N ') AS T WHERE rowId>=' +STR(@StartRecord)+N ' and rowId<=' +STR(@StartRecord + @pagesize - 1)
        EXEC (@sql)
    END
GO


--根据TOP ID
CREATE PROC [dbo].[proc_select_page_top]
@pageindex INT =1, --当前页数
@pagesize INT =10, --每页大小
@tablename VARCHAR (50)= '' , --表名
@fields VARCHAR (1000)= '' , --查询的字段集合
@keyid VARCHAR (50)= '' , --主键
@condition NVARCHAR(1000)= '' , --查询条件
@orderstr VARCHAR (500), --排序条件
@totalRecord BIGINT OUTPUT --总记录数
AS
    IF ISNULL (@orderstr,N '' )=N '' SET @orderstr=N ' ORDER BY ' +@keyid+N ' DESC '
    IF ISNULL (@fields,N '' )=N '' SET @fields=N '*'
    IF ISNULL (@condition,N '' )=N '' SET @condition=N '1=1'
    DECLARE @sql NVARCHAR(4000)
    --IF(@totalRecord IS NULL)
    --BEGIN
        SET @sql=N 'SELECT @totalRecord=COUNT(*)'
            +N ' FROM ' +@tablename
            +N ' WHERE ' +@condition
        EXEC sp_executesql @sql,N '@totalRecord INT OUTPUT' ,@totalRecord OUTPUT
    --END
    IF(@pageindex=1)
    BEGIN
        SET @sql=N 'SELECT TOP ' +STR(@pagesize)+N ' ' +@fields+N ' FROM ' +@tablename+N ' WHERE ' +@condition+N ' ' +@orderstr
        EXEC (@sql)
    END
    ELSE
    BEGIN
        SET @sql=N 'SELECT TOP ' +STR(@pagesize)+N ' ' +@fields+N ' FROM ' +@tablename+N ' WHERE  ' +@keyid
        +N ' NOT IN(SELECT TOP ' +STR((@pageindex-1)*@pagesize)+N ' ' +@keyid+N ' FROM '
        +@tablename+N ' WHERE ' +@condition+N ' ' +@orderstr+N ') AND ' +@condition+N ' ' +@orderstr
        EXEC (@sql)
    END
GO