数据库系列之T-SQL（存储过程实现分页查询）

浏览数：26 / 时间：2015年06月12日

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)
    --表的总记录数
    --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

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)
    --表的总记录数
    --  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MAX(MIN)ID

--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)
    --表的总记录数
    --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)