Oracle資料分頁，並傳出資料集

1、建立package

create

orreplace package forpaged is
type my_csr 
is ref cursor
;       
procedure getpaged(tablename in
varchar2,objectid in
number,fields in
varchar2,wherecase in
varchar2,orderfieldstr  varchar2,pagesize in
number,pageindex in
number,expression varchar2,totalcount out number
,csr out forpaged.my_csr);
end forpaged;

create

orreplace
procedure getpaged(tablename in
varchar2,objectid in
number,fields in
varchar2,wherecase in
varchar2,orderfieldstr in
varchar2,pagesize in
number,pageindex in
number,expression varchar2,totalcount out number,csr out forpaged.my_csr) is
v_sql 
varchar2(1000
);     v_begin 
number:=(pageindex-
1)*pagesize+
1; --
開始記錄
v_end number:=pageindex*pagesize;         --
結束記錄
begin
v_sql:='
select count(*) from (select entitycode from 
'|| tablename ||
'where 
'|| wherecase||
'and exists(select distinct companycode from company where 
'||tablename||
'.entitycode=company.companycode start with object_id=
'||objectid||
'connect by prior object_id=parent_id)) t';
execute immediate v_sql into
totalcount;
if expression is
notnull
then
v_sql:='
select 
'|| fields ||',
'||expression||
'heji from
(select t.* ,rownum rn from (select 
'|| fields ||
'from 
'|| tablename||
'where 
'|| wherecase ||
'and exists(select distinct companycode from company where 
'||tablename||
'.entitycode=company.companycode start with object_id=
'||objectid||
'connect by prior object_id=parent_id) order by 
'|| orderfieldstr ||
') t) 
where rn>=
'|| v_begin||
'and rn<='||
v_end;
else
v_sql:='
select 
'|| fields ||
'from
(select t.* ,rownum rn from (select 
'|| fields ||
'from 
'|| tablename||
'where 
'|| wherecase ||
'and exists(select distinct companycode from company where 
'||tablename||
'.entitycode=company.companycode start with object_id=
'||objectid||
'connect by prior object_id=parent_id) order by 
'|| orderfieldstr ||
') t) 
where rn>=
'|| v_begin||
'and rn<='||
v_end;
endif
;          
open csr for
v_sql;
--close csr;關閉後則不會傳出資料集
end getpaged;

1

///2
///使用儲存過程實現的分頁查詢
3///
4///
資料表5
///實體表主鍵
6///
表中字段拼接的字串
7///
查詢條件
8///
每頁顯示資料行數
9///
當前頁10
///排序字段拼接的字串
11///
符合條件總記錄數
12///
計算表示式
13///
14public datatable getreportdatabypage(m_selectdata model, out
inttotalcount)
15

1

///2
///分頁儲存過程
3///
4///
儲存過程名字
5///
tablename表名，fields查詢字段字串，wherecase查詢條件，orderfieldstr排序字段字串，pagesize每頁顯示資料行數，pageindex頁碼，totalcount總記錄數，傳出，csr游標，傳出
6///
7public
static datatable excuteprocedure(string
proname, oracleparameter parameters)
818                     comm.commandtype =commandtype.storedprocedure;
19conn.open();
20                     oracledataadapter oda = new
oracledataadapter(comm);
21                     dataset ds = new
dataset();
22oda.fill(ds);
23//
得到查詢結果表
24                     table = ds.tables[0
];25}26
}27return
table;
28         }

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