createprocedure`mysqltestuser_select_pageable`(
_whereclausevarchar(2000),--查詢條件
_orderbyvarchar(2000),--排序條件
_pagesizeint,--每頁記錄數
_pageindexint,--當前頁碼
_docountbit--標誌:統計資料/輸出資料
)notdeterministic
sqlsecuritydefiner
comment''
begin
--定義key欄位臨時表
droptableifexists_temptable_keyid;--刪除臨時表,如果存在
createtemporarytable_temptable_keyid
(useridint
)type=heap;
--構建動態的sql，輸出關鍵字key的id集合
--查詢條件
set@sql='selectuseridfrommysqltestuser';
if(_whereclauseisnotnull)and(_whereclause<>'')then
set@sql=concat(@sql,'where',_whereclause);
endif;
if(_orderbyisnotnull)and(_orderby<>'')then
set@sql=concat(@sql,'orderby',_orderby);
endif;
--準備id記錄插入到臨時表
set@sql=concat('insertinto_temptable_keyid(userid)',@sql);
preparestmtfrom@sql;
executestmt;
deallocatepreparestmt;
--key的id集合[end]
--下面是輸出
if(_docount=1)then--統計
begin
selectcount(*)asrecordcountfrom_temptable_keyid;
end;
else--輸出記錄集
begin
--計算記錄的起點位置
set@startpoint=ifnull((_pageindex-1)*_pagesize,0);
set@sql='selecta.*
frommysqltestusera
innerjoin_temptable_keyidb
ona.userid=b.userid';
set@sql=concat(@sql,"limit",@startpoint,",",_pagesize);
preparestmtfrom@sql;
executestmt;
deallocatepreparestmt;
end;
endif;
droptable_temptable_keyid;
end;
drop procedure if exists pr_pager;
create procedure pr_pager(
in p_table_name varchar(1024), /*表名*/
in p_fields varchar(1024), /*查詢字段*/
in p_page_size int, /*每頁記錄數*/
in p_page_now int, /*當前頁*/
in p_order_string varchar(128), /*排序條件(包含order關鍵字,可為空)*/
in p_where_string varchar(1024), /*where條件(包含where關鍵字,可為空)*/
out p_out_rows int /*輸出記錄總數*/
)not deterministic
sql security definer
comment '分頁儲存過程'
begin
/*定義變數*/
declare m_begin_row int default0;
declare m_limit_string char(64);
/*構造語句*/
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);
/*預處理*/
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;
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