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三款 mysql 分页存储过程实例
时间:2010-10-23 编辑:简简单单 来源:一聚教程网
如果你正在mysql教程 5以上版本,我要告诉你这里有三款 mysql 分页存储过程实例哦,存储过程是mysql 5.0以后才支持的,现在看看这款存储过程吧,看一款简单存储过程
*mssql存储过程
*/
create definer=`root`@`localhost` procedure `getrecordasp教程age`(
in tbname varchar(100),
fldname varchar(100),
pagesize int,
pageindex int,
ordertype int,
strwhere varchar(2000)
)
begin
declare beginrow int;
declare sqlstr varchar(1000);
declare limittemp varchar(1000);
declare ordertemp varchar(1000);
set beginrow = (pageindex-1)*pagesize;
set sqlstr = concat('select * from ',tbname);
set limittemp = concat(' limit ',beginrow,',',pagesize);
set ordertemp = concat(' order by ',fldname);
if ordertype = 0 then
set ordertemp = concat(ordertemp,' asc ');
else
set ordertemp = concat(ordertemp,' desc ');
end if;set @sqlstring = concat(sqlstr,' ',strwhere,ordertemp,limittemp);
prepare sqlstmt from @sqlstring;
execute sqlstmt;
deallocate prepare sqlstmt;end
create definer=`root`@`localhost` procedure `getrecordcount`(
in tbname varchar(20),
in strwhere varchar(20)
)
begin
if strwhere!="" then
set @strsql=concat('select count(*) from ',tbname,' where ',strwhere);
else
set @strsql=concat('select count(*) from ',tbname);
end if;
prepare sqlstmt from @strsql;
execute sqlstmt;
deallocate prepare sqlstmt;
end
这是一款高手分享的他的存储过程
create procedure `mysqltestuser_select_pageable`(
_whereclause varchar(2000), -- 查找条件
_orderby varchar(2000), -- 排序条件
_pagesize int , -- 每页记录数
_pageindex int , -- 当前页码
_docount bit -- 标志:统计数据/输出数据
)
not deterministic
sql security definer
comment ' '
begin
-- 定义key字段临时表
drop table if exists _temptable_keyid; -- 删除临时表,如果存在
create temporary table _temptable_keyid
(
userid int
)type=heap;
-- 构建动态的sql,输出关键字key的id集合
-- 查找条件
set @sql = 'select userid from mysqltestuser ';
if (_whereclause is not null) and (_whereclause <> ' ') then
set @sql= concat(@sql, ' where ' ,_whereclause);
end if;if (_orderby is not null) and (_orderby <> ' ') then
set @sql= concat( @sql , ' order by ' , _orderby);
end if;
-- 准备id记录插入到临时表
set @sql=concat( 'insert into _temptable_keyid(userid) ', @sql);
prepare stmt from @sql;
execute stmt ;
deallocate prepare stmt;
-- key的id集合 [end]
-- 下面是输出
if (_docount=1) then -- 统计
begin
select count(*) as recordcount from _temptable_keyid;
end;
else -- 输出记录集
begin
-- 计算记录的起点位置
set @startpoint = ifnull((_pageindex-1)*_pagesize,0);
set @sql= ' select a.*
from mysqltestuser a
inner join _temptable_keyid b
on a.userid =b.userid ';set @sql=concat(@sql, " limit ",@startpoint, " , ",_pagesize);
prepare stmt from @sql;
execute stmt ;
deallocate prepare stmt;
end;
end if;drop table _temptable_keyid;
end;
下面是mysqltestuser表的ddl:
create table `mysqltestuser` (
`userid` int(11) not null auto_increment,
`name` varchar(50) default null,
`chinesename` varchar(50) default null,
`registerdatetime` datetime default null,
`jf` decimal(20,2) default null,
`description` longtext,
primary key (`userid`)
) engine=innodb default charset=gb2312;
插入些数据:
insert into `mysqltestuser` (`userid`, `name`, `chinesename`, `registerdatetime`, `jf`, `description`) values
(1, 'xuu1 ', 'www.111com.net', '2007-03-29 12:54:41 ',1.5, 'description1 '),
存储过程调用测试:
-- 方法原型 `mysqltestuser_select_pageable`(条件,排列顺序,每页记录数,第几页,是否统计数据)
-- call `mysqltestuser_select_pageable`(_whereclause ,_orderby ,_pagesize ,_pageindex , _docount)-- 统计数据
call `mysqltestuser_select_pageable`(null, null, null, null, 1)
-- 输出数据,没条件限制,10条记录/页,第一页
call `mysqltestuser_select_pageable`(null, null, 10, 1,0)
-- 输出数据,条件限制,排列, 10条记录/页,第一页
call `mysqltestuser_select_pageable`( 'chinesename like ' '%飞3% ' ' ', 'userid asc ', 10, 1, 0)
mysql存储过程二
mysql测试版本:5.0.41-community-nt
/*****************************************************
mysql分页存储过程
吴剑 2009-07-02
*****************************************************/
drop procedure if exists pr_pager;
create procedure pr_pager(in p_table_name varchar(1024), /*表名*/
in p_fields varchar(1024), /*查询字段*/
in p_page_size int, /*每页记录数*/
in p_page_now int, /*当前页*/
in p_order_string varchar(128), /*排序条件(包含order关键字,可为空)*/
in p_where_string varchar(1024), /*where条件(包含where关键字,可为空)*/
out p_out_rows int /*输出记录总数*/
)
not deterministic
sql security definer
comment '分页存储过程'
begin/*定义变量*/
declare m_begin_row int default 0;
declare m_limit_string char(64);/*构造语句*/
set m_begin_row = (p_page_now - 1) * p_page_size;
set m_limit_string = concat(' limit ', m_begin_row, ', ', p_page_size);
set @count_string = concat('select count(*) into @rows_total from ', p_table_name, ' ', p_where_string);
set @main_string = concat('select ', p_fields, ' from ', p_table_name, ' ', p_where_string, ' ', p_order_string, m_limit_string);/*预处理*/
prepare count_stmt from @count_string;
execute count_stmt;
deallocate prepare count_stmt;
set p_out_rows = @rows_total;prepare main_stmt from @main_string;
execute main_stmt;
deallocate prepare main_stmt;
end;
第2个例子
php教程
$server="localhost";
$ua="root";
$pwd="123456";
$conn=mysql_connect($server,$ua,$pwd,1,131072); //后面比平时多了1,131072表示本地化,这样才能返回记录集
mysql_select_db("guestbook");
mysql_query("set names 'gbk'");
//$re=mysql_query("select * from guestbook order by id desc");
$re=mysql_query("call prc_page_result(1, 'name,time', 'guestbook', 'id<>0', 'id', 1, 'id', 2);");while($row=mysql_fetch_assoc($re)){
echo $row["name"]."
";
echo $row["time"]."
";}
mysql_close();
?>
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;
//调用
call prc_page_result(1, "字段列表", "表名", "条件", "排序字段", 1, "id", 25);
参数说明:
-
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