数据库通用分页存储过程

SqlServer通用存储过程

CREATE PROCEDURE pagination
@tblName   varchar(255),            -- 表名
@strGetFields varchar(1000) = '*',  -- 需要返回的列
@fldName varchar(255)='',          -- 排序的字段名
@PageSize   int = 10,               -- 页尺寸
@PageIndex  int = 1,                -- 页码
@doCount  bit = 0,                  -- 返回记录总数, 非 0 值则返回
@OrderType bit = 0,                 -- 设置排序类型, 非 0 值则降序
@strWhere  varchar(1500) = ''       -- 查询条件 (注意: 不要加 where)
AS
declare @strSQL   varchar(5000)     -- 主语句
declare @strTmp   varchar(110)      -- 临时变量
declare @strOrder varchar(400)      -- 排序类型
if @doCount != 0
begin
    if @strWhere !=''
    set @strSQL = 'select count(*) as Total from [' + @tblName + '] where '+@strWhere
    else
    set @strSQL = 'select count(*) as Total from [' + @tblName + ']'
end
--以上代码的意思是如果@doCount传递过来的不是0，就执行总数统计。以下的所有代码都是@doCount为0的情况
else
begin
if @OrderType != 0
begin
    set @strTmp = '<(select min'
set @strOrder = ' order by [' + @fldName +'] desc'
--如果@OrderType不是0，就执行降序，这句很重要！
end
else
begin
    set @strTmp = '>(select max'
    set @strOrder = ' order by [' + @fldName +'] asc'
end

if @PageIndex = 1
begin
    if @strWhere != ''  
    set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ '  from [' + @tblName + '] where ' + @strWhere + ' ' + @strOrder
     else
     set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ '  from ['+ @tblName + '] '+ @strOrder
--如果是第一页就执行以上代码，这样会加快执行速度
end
else
begin

--以下代码赋予了@strSQL以真正执行的SQL代码

set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ '  from ['
    + @tblName + '] where [' + @fldName + ']' + @strTmp + '(['+ @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['+ @fldName + '] from [' + @tblName + ']' + @strOrder + ') as tblTmp)'+ @strOrder
if @strWhere != ''
    set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ '  from ['
        + @tblName + '] where [' + @fldName + ']' + @strTmp + '(['
        + @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['
        + @fldName + '] from [' + @tblName + '] where ' + @strWhere + ' '
        + @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder
end
end  
exec (@strSQL)
GO






mysql通用存储过程

use guestbook;
delimiter $$
drop procedure if exists prc_page_result $$
create procedure prc_page_result (
in currpage      int,
in columns       varchar(500),
in tablename     varchar(500),
in sCondition    varchar(500),
in order_field   varchar(100),
in asc_field     int,
in primary_field varchar(100),
in pagesize      int
)
begin
    declare sTemp  varchar(1000);
    declare sSql   varchar(4000);
    declare sOrder varchar(1000);
    
    if asc_field = 1 then
        set sOrder = concat(' order by ', order_field, ' desc ');
        set sTemp  = '<(select min';
    else
        set sOrder = concat(' order by ', order_field, ' asc ');
        set sTemp  = '>(select max';
    end if;
    
    if currpage = 1 then
        if sCondition <> '' then
            set sSql = concat('select ', columns, ' from ', tablename, ' where ');
            set sSql = concat(sSql, sCondition, sOrder, ' limit ?');
        else
            set sSql = concat('select ', columns, ' from ', tablename, sOrder, ' limit ?');
        end if;
    else
        if sCondition <> '' then
            set sSql = concat('select ', columns, ' from ', tablename);
            set sSql = concat(sSql, ' where ', sCondition, ' and ', primary_field, sTemp);
            set sSql = concat(sSql, '(', primary_field, ')', ' from (select ');
            set sSql = concat(sSql, ' ', primary_field, ' from ', tablename, sOrder);
            set sSql = concat(sSql, ' limit ', (currpage-1)*pagesize, ') as tabtemp)', sOrder);
            set sSql = concat(sSql, ' limit ?');
        else
            set sSql = concat('select ', columns, ' from ', tablename);
            set sSql = concat(sSql, ' where ', primary_field, sTemp);
            set sSql = concat(sSql, '(', primary_field, ')', ' from (select ');
            set sSql = concat(sSql, ' ', primary_field, ' from ', tablename, sOrder);
            set sSql = concat(sSql, ' limit ', (currpage-1)*pagesize, ') as tabtemp)', sOrder);
            set sSql = concat(sSql, ' limit ?');
        end if;
    end if;
    set @iPageSize = pagesize;
    set @sQuery = sSql;
    prepare stmt from @sQuery;
    execute stmt using @iPageSize;
end;
$$
delimiter;

可以存储为数据库脚本，然后用命令导入：

mysql -u root -p < pageResult.sql;

调用：call prc_page_result(1, "*", "Tablename", "", "columnname", 1, "PKID", 25);