mysql分页查询

MySql分页存储过程
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

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:

第几页,显示的字段(如name,id),表名,Where后面的条件,排序的字段,1表示降序,id主键,25每页显示条数

//PHP调用

<?php
$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"]."<br>";
   echo $row["time"]."<br>";

}
mysql_close();
?>

来自: http://hi.baidu.com/abcfxr/blog/item/7479930194e1c88be950cd05.html