{"id":133,"date":"2005-07-12T19:49:25","date_gmt":"2005-07-12T11:49:25","guid":{"rendered":"http:\/\/www.2lin.net\/?p=44"},"modified":"2005-07-12T19:49:25","modified_gmt":"2005-07-12T11:49:25","slug":"44","status":"publish","type":"post","link":"https:\/\/www.2lin.top\/?p=133","title":{"rendered":"\u6548\u7387\u95ee\u9898"},"content":{"rendered":"

\u8fd9\u51e0\u5929\u4e00\u76f4\u5728\u5bfc\u6570\u636e\u3002\u7531\u4e8e\u6570\u636e\u91cf\u5b9e\u5728\u662f\u592a\u5927\u4e86\u3002
\u8868\u7a7a\u95f4\u88ab\u6491\u6ee1\u4e86\u3002 \u53ef\u4ee5\u4f7f\u7528
\u6dfb\u52a0\u8868\u7a7a\u95f4\u6587\u4ef6\u6765\u5b9e\u73b0\u8fd9\u4e00\u65b9\u6cd5~~ <\/p>\n

Oracle\u5220\u9664\u6216\u66f4\u65b0\u3001\u63d2\u5165\u6570\u636e\u65f6\u3002\u4f1a\u6267\u884c\u56de\u6eda\u6570\u636e\u64cd\u4f5c
\u5982\u679c\u6570\u636e\u91cf\u5927\u65f6\u3002\u53ef\u4ee5\u4f7f\u7528\u5b58\u50a8\u8fc7\u7a0b\u6765\u6267\u884c\u64cd\u4f5c\u3002
—————–\u4f8b\u5b50—————————— <\/p>\n

create or replace procedure del_hubei_SSF_forall                                                  
as
type ridArray is table of rowid index by binary_integer;
type dtArray is table of varchar2(50) index by binary_integer;
v_rowid ridArray;
v_mid_to_delete dtArray;
begin <\/div>\n

\u8fd9\u51e0\u5929\u4e00\u76f4\u5728\u5bfc\u6570\u636e\u3002\u7531\u4e8e\u6570\u636e\u91cf\u5b9e\u5728\u662f\u592a\u5927\u4e86\u3002
\u8868\u7a7a\u95f4\u88ab\u6491\u6ee1\u4e86\u3002 \u53ef\u4ee5\u4f7f\u7528
\u6dfb\u52a0\u8868\u7a7a\u95f4\u6587\u4ef6\u6765\u5b9e\u73b0\u8fd9\u4e00\u65b9\u6cd5~~ <\/p>\n

Oracle\u5220\u9664\u6216\u66f4\u65b0\u3001\u63d2\u5165\u6570\u636e\u65f6\u3002\u4f1a\u6267\u884c\u56de\u6eda\u6570\u636e\u64cd\u4f5c
\u5982\u679c\u6570\u636e\u91cf\u5927\u65f6\u3002\u53ef\u4ee5\u4f7f\u7528\u5b58\u50a8\u8fc7\u7a0b\u6765\u6267\u884c\u64cd\u4f5c\u3002
—————–\u4f8b\u5b50—————————— <\/p>\n

create or replace procedure del_hubei_SSF_forall                                                  
as
type ridArray is table of rowid index by binary_integer;
type dtArray is table of varchar2(50) index by binary_integer;
v_rowid ridArray;
v_mid_to_delete dtArray;
begin
     select mid,rowid bulk collect into v_mid_to_delete,v_rowid from temp_mid_hubei_bak where rownum<10001;
    forall i in 1 .. v_mid_to_delete.COUNT
    delete from SSF where mid = v_mid_to_delete(i);
—       DBMS_OUTPUT.PUT_LINE(to_char(v_mid_to_delete.COUNT)||’ records deleted from hubei_SSF   !!!’);                              
     forall i in 1 .. v_rowid.COUNT
         delete from temp_mid_hubei_bak where rowid = v_rowid(i);
—       DBMS_OUTPUT.PUT_LINE(to_char(v_rowid.COUNT)||’ records deleted from temp_mid_hubei_bak   !!!’);                              
end;
\/ <\/p>\n

\u7136\u540e\u6784\u9020\u59cb\u7ec8\u6309\u716710000\u6761\u5faa\u73af\u6279\u91cf\u5220\u9664\u7684\u8fc7\u7a0b\uff1a <\/p>\n

create or replace procedure exec_forall
(
  p_RowCount in number,            — Total need to delete rows count
  p_ExeCount in number      — Every times need to delete rows count
)
as
    n_RowCount number:=0;          — Yet needed to delete rows count
    n_ExeTimes number:=0;    — execute times(loop times)
    n_delete number:=0;                    — really delete rows count
begin
 n_RowCount := p_RowCount;
while n_RowCount >0 loop <\/p>\n

    EXECUTE IMMEDIATE ‘begin del_hubei_SUBSREGINFO_forall; end;’;
   commit;
   if n_RowCount>p_ExeCount then
       n_RowCount:= n_RowCount-p_ExeCount;
       n_ExeTimes := n_ExeTimes + 1;
    else
      n_ExeTimes := n_ExeTimes + 1;
      n_delete := n_RowCount;
      n_RowCount:= n_RowCount-p_ExeCount;
   end if;
   DBMS_OUTPUT.PUT_LINE(‘———‘||to_char(n_ExeTimes)||’———–‘); <\/p>\n

   n_delete := n_delete+p_ExeCount*(n_ExeTimes-1);
end loop;
DBMS_OUTPUT.PUT_LINE(‘Full Finished!!!’);
DBMS_OUTPUT.PUT_LINE(‘Totally ‘||to_char(n_delete)||’ records deleted.  !!!’);
end; <\/p>\n

\/ <\/p>\n

<\/div>\n

——–\u56db\u79cd\u5206\u9875\u67e5\u8be2\u65b9\u6cd5—————————- <\/p>\n

1.
select top m * into \u4e34\u65f6\u8868(\u6216\u8868\u53d8\u91cf) from tablename order by columnname — \u5c06top m\u7b14\u63d2\u5165
set rowcount n
select * from \u8868\u53d8\u91cf order by columnname desc <\/p>\n

2.
select top n * from 
(select top m * from tablename order by columnname) a
order by columnname desc <\/p>\n

3.\u5982\u679ctablename\u91cc\u6ca1\u6709\u5176\u4ed6identity\u5217\uff0c\u90a3\u4e48\uff1a
select identity(int) id0,* into #temp from tablename <\/p>\n

\u53d6n\u5230m\u6761\u7684\u8bed\u53e5\u4e3a\uff1a
select * from #temp where id0 >=n and id0 <= m <\/p>\n

\u5982\u679c\u4f60\u5728\u6267\u884cselect identity(int) id0,* into #temp from tablename\u8fd9\u6761\u8bed\u53e5\u7684\u65f6\u5019\u62a5\u9519,\u90a3\u662f\u56e0\u4e3a\u4f60\u7684DB\u4e2d\u95f4\u7684select into\/bulkcopy\u5c5e\u6027\u6ca1\u6709\u6253\u5f00\u8981\u5148\u6267\u884c\uff1a
exec sp_dboption \u4f60\u7684DB\u540d\u5b57,’select into\/bulkcopy’,true <\/p>\n

4.\u5982\u679c\u8868\u91cc\u6709identity\u5c5e\u6027\uff0c\u90a3\u4e48\u7b80\u5355\uff1a
select * from tablename where identitycol between n and m<\/p>\n","protected":false},"excerpt":{"rendered":"

\u8fd9\u51e0\u5929\u4e00\u76f4\u5728\u5bfc\u6570\u636e\u3002\u7531\u4e8e\u6570\u636e\u91cf\u5b9e\u5728\u662f\u592a\u5927\u4e86\u3002 \u8868\u7a7a\u95f4\u88ab\u6491\u6ee1\u4e86\u3002 \u53ef\u4ee5\u4f7f\u7528 \u6dfb\u52a0\u8868\u7a7a\u95f4\u6587\u4ef6\u6765\u5b9e\u73b0\u8fd9\u4e00\u65b9\u6cd5~~ Oracle\u5220\u9664\u6216\u66f4\u65b0\u3001\u63d2\u5165\u6570\u636e\u65f6\u3002\u4f1a\u6267\u884c\u56de\u6eda\u6570\u636e\u64cd\u4f5c \u5982...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[],"_links":{"self":[{"href":"https:\/\/www.2lin.top\/index.php?rest_route=\/wp\/v2\/posts\/133"}],"collection":[{"href":"https:\/\/www.2lin.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.2lin.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.2lin.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.2lin.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=133"}],"version-history":[{"count":0,"href":"https:\/\/www.2lin.top\/index.php?rest_route=\/wp\/v2\/posts\/133\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.2lin.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=133"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.2lin.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=133"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.2lin.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=133"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}