create
procedure `p_viewpage`(
$tablename varchar(200), --表名稱
$fieldlist varchar(2000), --顯示列名
$primarykey varchar(100), --主鍵
$where
varchar(1000), --查詢條件 不含'where'字元
$order
varchar(1000), --排序 不含'order by'字元，如id asc,userid desc，當@sorttype=3時生效
$sorttype int, --排序規則 1:正序asc 2:倒序desc 3:多列排序
$recordercount int, --記錄總數 0:會返回總記錄
$pagesize int, --分頁大小
$pageindex int, --頁索引
out $totalcount integer, --總記錄數
out $totalpagecount integer --總分頁數
) begin
if !(($tablename is
null
or $tablename='') or ($fieldlist is
null
or $fieldlist='') or ($primarykey is
null
or $primarykey='') or $sorttype < 1 or $sorttype >3 or $recordercount < 0 or $pagesize < 0 or $pageindex < 0) then
if ($where
isnull
or $where='') then
set @new_where1 = ' ' ;
set @new_where2 = ' where ' ;
else
set @new_where1 =concat(' where ',$where);
set @new_where2 =concat(' where ',$where,' and ');
endif;
if $order=''
or $sorttype = 1 or $sorttype = 2 then
if $sorttype = 1 then
set @new_order =concat(' order by ',$primarykey,' asc' );
endif;
if $sorttype = 2 then
set @new_order =concat(' order by ',$primarykey,' desc');
endif;
else
set @new_order =concat(' order by ',$order);
endif;
set @sqlcount = concat('select count(*) into @totalcount from ',$tablename,@new_where1);
set @sqlcount1 = concat('select ceiling((count(*)+0.0)/',$pagesize,') into @totalpagecount from ',$tablename,@new_where1);
if $recordercount = 0 then
prepare stmt1 from @sqlcount;
execute stmt1;
set $totalcount=@totalcount;
prepare stmt1 from @sqlcount1;
execute stmt1;
set $totalpagecount=@totalpagecount;
else
set $totalcount = $recordercount;
endif;
if $pageindex > ceiling(($totalcount+0.0)/$pagesize) then
set $pageindex = ceiling(($totalcount+0.0)/$pagesize);
endif;
if $pageindex = 0 or $pageindex = 1 then
set @sql=concat('select ',$fieldlist,' from ',$tablename,@new_where1,@new_order,' limit ',$pagesize);
else
if $sorttype = 1 then
set @sql=concat('select ',$fieldlist,' from ',$tablename,@new_where2,$primarykey,' > (select max(',$primarykey,') from (select ',$primarykey,' from ',$tablename,@new_where1,@new_order,' limit ',$pagesize*($pageindex-1),' ) as tmp) ',@new_order,' limit ',$pagesize);
endif;
if $sorttype = 2 then
set @sql=concat('select ',$fieldlist,' from ',$tablename,@new_where2,$primarykey,' < (select min(',$primarykey,') from (select ',$primarykey,' from ',$tablename,@new_where1,@new_order,' limit ',$pagesize*($pageindex-1),' ) as tmp) ',@new_order,' limit ',$pagesize);
endif;
if $sorttype = 3 then
if instr($order,',') > 0 then
set @sql=concat('select ',$fieldlist,' from ',$tablename,@new_where2,$primarykey,' not in (select ',$primarykey,' from (select ',$primarykey,' from ',$tablename,@new_where1,@new_order,' limit ',$pagesize*($pageindex-1),' ) a)',@new_order,' limit ',$pagesize);
else
set @new_order =concat(' order by ',$primarykey,' asc' );
set @sql=concat('select ',$fieldlist,' from ',$tablename,@new_where2,$primarykey,' > (select max(',$primarykey,') from (select ',$primarykey,' from ',$tablename,@new_where1,@new_order,' limit ',$pagesize*($pageindex-1),' ) as tmp) ',@new_order,' limit ',$pagesize);
endif;
endif;
endif;
prepare stmt2 from @sql;
execute stmt2;
endif;
end ;
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