Mysql分页查询通用存储过程

Mysql分页查询通用存储过程

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;