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一个sql写法

kebo — Mon, 05 Jan 2009 13:55:00 GMT

有�h问这��L��sql该怎么实现�Q?br />表数据和�l�构
   CODE NAME    B01    S01    B02    S02
    1          张三       数学    80
    1          张三                            语文    75
    2          王五       数学    70
    2          王五
    3          李四       数学    50
    3          李四                           语文    88

希望查询出如下结果：
   CODE SUM_STR(NAME)    B01    SUM_STR(S01)    B02    SUM_STR(S02)
    1                张三                    数学                80           语文            75
    2                王五                    数学                70
    3                李四                    数学                50           语文             88
�q�个问题可以采用自定义的聚集函数来实玎ͼ�

create or replace type strcat_type as object (
    cat_string varchar2 ( 4000 ),
    static function ODCIAggregateInitialize(cs_ctx In Out strcat_type) return number ,
    member function ODCIAggregateIterate(self In Out strcat_type,value in varchar2 ) return

number ,
    member function ODCIAggregateMerge(self In Out strcat_type,ctx2 In Out strcat_type)

return number ,
    member function ODCIAggregateTerminate(self In Out strcat_type,returnValue Out

varchar2 ,flags in number ) return number
)
/

------------------------------------

create or replace type body strcat_type is
  static function ODCIAggregateInitialize(cs_ctx IN OUT strcat_type) return number
   is
   begin
      cs_ctx : = strcat_type( null );
       return ODCIConst.Success;
   end ;

  member function ODCIAggregateIterate(self IN OUT strcat_type,
                                       value IN varchar2 )
   return number
   is
   begin
       if self.cat_string is null then
         self.cat_string : = value;
       end if ;
       return ODCIConst.Success;
   end ;

  member function ODCIAggregateTerminate(self IN Out strcat_type,
                                         returnValue OUT varchar2 ,
                                         flags IN number )
   return number
   is
   begin
      returnValue : = self.cat_string;
       return ODCIConst.Success;
   end ;

  member function ODCIAggregateMerge(self IN OUT strcat_type,
                                     ctx2 IN Out strcat_type)
   return number
   is
   begin
       if self.cat_string is null then
                   self.cat_string := ctx2.cat_string;
          end if;
       return ODCIConst.Success;
   end ;

end ;
/

-------------------

CREATE OR REPLACE FUNCTION sum_str(input varchar2 )
RETURN varchar2
PARALLEL_ENABLE AGGREGATE USING strcat_type;
/

-------最后查询语句：

select code,sum_str(name), sum_str(b01) b01,sum_str(s01) ,sum_str(b02) b02,sum_str(s02)
from javaeye group by code order by code

kebo 2009-01-05 21:55 发表评论

openlayers如何利用vector和style作出marker

kebo — Thu, 04 Sep 2008 06:12:00 GMT

定义标注的样式，�q�个军_��标注昄��的方式，必须定义�?br /> 1 $package("com.bct.map");
2 com.bct.map.EncoderMarkerStyle = {
3     'bigEncoder':{
4         graphicWidth:24,
5         graphicHeight : 24,
6         graphicXOffset : -12,
7         graphicYOffset : -24,
8         externalGraphic : "scripts/map/img/channel2.png"
9     },
10     'smallEncoder':{
11         graphicWidth:16,
12         graphicHeight : 16,
13         graphicXOffset : -8,
14         graphicYOffset : -16,
15         externalGraphic : "scripts/map/img/channel.gif"
16     },
17     'selectStyle':{
18         pointerEvents: "visiblePainted",
19         border:"border:25 outset #ff88ff",
20         cursor: "pointer",
21         graphicWidth:24,
22         graphicHeight : 24,
23         graphicXOffset : -12,
24         graphicYOffset : -24,
25         externalGraphic : "scripts/map/img/channel2.png"
26     },
27     styleMap: new OpenLayers.StyleMap({
28                     "select": new OpenLayers.Style({pointRadius: 24})
29     })
30 }

marker层，扩展vector层，通过point和style辑ֈ�marker的效�?br />

  1 $package("com.bct.map");
  2 $import("com.bct.map.EncoderMarkerStyle");
  3 com.bct.map.MarkerVectorLayer = OpenLayers.Class(OpenLayers.Layer.Vector,{
  4     /**
  5      * parameters
  6      * attribute filer对象
  7      */
  8     getFeatureByAttribute :function(attributes){
  9         var feature = null;
10         for(var i=0;i<this.features.length; ++i){
11             var attri = this.features[i].attributes;
12             var find = false;
13             for(var j in attributes){
14                 if(attributes[j] == attri[j]){
15                     find = true;
16                 }
17             }
18             if(find){
19                 return this.features[i];
20             }
21         }
22
23     },
24     addEncorderFeature:function(encNode,location){
25         if(encNode&&this.repetitiveCheck(encNode.id)){
26             return;
27         }
28         var attributes = OpenLayers.Util.extend({}, encNode.attributes);
29         var enc_point = new OpenLayers.Geometry.Point(location.lon,location.lat);
30         var enc_Feature = new OpenLayers.Feature.Vector(enc_point,attributes,com.bct.map.EncoderMarkerStyle['smallEncoder']);
31         this.addFeatures([enc_Feature]);
32         if(encNode.attributes['lon']&&encNode.attributes['lat']&&encNode.attributes['lon'].length>0){
33             return;
34         }
35         this.updateChannel(encNode.id,location.lon,location.lat);
36     },
37     addDeptFeature:function(deptNode,location){
38         if(deptNode&&this.repetitiveCheck(deptNode.id)){
39             return;
40         }
41         var attributes = OpenLayers.Util.extend({}, deptNode.attributes);
42         var enc_point = new OpenLayers.Geometry.Point(location.lon,location.lat);
43         var enc_Feature = new OpenLayers.Feature.Vector(enc_point,attributes,com.bct.map.EncoderMarkerStyle['smallEncoder']);
44
45         this.addFeatures([enc_Feature]);
46
47     },
48     repetitiveCheck:function(entity_id){
49         if(this.getFeatureByAttribute({id:entity_id})){
50             return true;
51         }
52         return false;
53     },
54     updateChannel:function(channel_id,lon,lat){
55         Ext.Ajax.request({
56                url: 'deviceVideoEncoder.do?method=updateLonlat&id='+channel_id+"&lon="+lon+"&lat="+lat
57         });
58     },
59     channelMarkerClick:function() {
60         var features = this.selectedFeatures;
61         if(features.length >=0&&features[0]) {
62             feature = features[0];
63             var treeNodeAttribute = feature.attributes;
64             var vedioPopForm = new Ext.FormPanel({
65                                    frame:true,
66                                 labelAlign: 'top',
67                                 bodyStyle:'padding:5px',
68                                 width: 400,
69                                 height:200,
70                                 layout: 'fit',
71                                 items:[{
72                                             xtype:'fieldset',
73                                             title: '摄像头信�?,
74                                             autoHeight:true,
75                                             autoWidth:true,
76                                             html:"

名称:"+treeNodeAttribute['text']
77 +"

通道�?"+treeNodeAttribute['channelNumber']
78 +"

讑֤�名称:"+treeNodeAttribute['deviceunitName']
79 +"

所属部�?"+treeNodeAttribute['deptName']
80 +"

�l�纬�?"+treeNodeAttribute['lon']+","+treeNodeAttribute['lat']
81                                     }]
82             });
83             var win = new Ext.Window({
84                 width : 420,
85                 height: 220,
86                 items : vedioPopForm
87             });
88             win.show();
89         }
90     },
91     cartoonFeature :function(feature){
92         this.drawFeature(feature,com.bct.map.EncoderMarkerStyle['bigEncoder']);
93         var runner = new Ext.util.TaskRunner(1000);
94         var task = {
95             run:this.drawFeature,
96             scope:this,
97             args:[feature,com.bct.map.EncoderMarkerStyle['smallEncoder']],
98             interval: 1000
99         }
100         runner.start(task);
101     },
102     removeSelectFeature:function(){
103         var features = this.selectedFeatures;
104         for(var i=features.length-1; i>=0; i--) {
105             feature = features[i];
106             this.updateChannel(feature.attributes['id'],"","");
107         }
108         this.destroyFeatures(this.selectedFeatures);
109     },
110     monitorSelectFeature:function(){
111         var features = this.selectedFeatures;
112         if(features.length >=0&&features[0]) {
113             feature = features[0];
114             var treeNodeAttribute = feature.attributes;
115             var objId="mapAVShow"+treeNodeAttribute['id'];
116             var win = new Ext.Window({
117                 width : 420,
118                 height: 420,
119                 html:""+objId+"' classid='clsid:574B47E8-A366-4AB9-B2EA-57F145CA3780'>

"
120             });
121             win.show();
122             Ext.lib.Ajax.request('GET','channel.do?method=getSiteId&accept=json&id='+treeNodeAttribute['id'],
123                               {success: function(o){
124                                         var encoderObj;
125                                         encoderObj=Ext.util.JSON.decode(o.responseText);
126                                         $import("com.bct.monitor.mapAVShow");
127                                         var avshowObj=document.getElementById(objId);
128                                         var avshow=new com.bct.monitor.mapAVShow(avshowObj,
129                                         encoderObj[0].siteId,encoderObj[0].enCoderId,encoderObj[0].diveceUnitTypeId,'');
130                                         avshow.startVideo();
131                                         win.on("destroy",function del(){
132                                                          avshow.stopVideo();
133                                         });
134                                 }
135                               });
136         }
137     }
138 });

kebo 2008-09-04 14:12 发表评论

一�ơsql调优历程

kebo — Mon, 10 Sep 2007 11:35:00 GMT

在项目进入性能��试阶段�Q�终于爆发了sql�q�行�~�慢�Q�系�l�吞吐量下降�Q�甚至一度出现oracle服务器cpu100%的情��c��具体开发和��试人员报告情况�Q�开始介入处理�?br />
具体查找性能�~�慢的过�E�略除�?br />发现一条sql�q�行�~�慢。通过跟踪发现一下信�?br />select alias_p2.pendingid, alias_p2.workitemid, alias_p2.operationid, alias_p2.operationkey,

2 alias_p2.title, alias_p2.sendercn, alias_p2.operatedes, alias_p2.pendingstate,

3 alias_p2.parameter, alias_p2.createdate, alias_p2.deptname, alias_p2.completeddate ,

4 alias_p2.openstate , alias_p2.name, alias_p2.processinstanceid, alias_p2.asset

5 from ( select alias_p1.pendingid, alias_p1.workitemid, alias_p1.operationid,

6 alias_p1.operationkey, alias_p1.title, alias_p1.sendercn, alias_p1.operatedes,

7 alias_p1.pendingstate, alias_p1.parameter, alias_p1.createdate, alias_p1.deptname,

8 alias_p1.completeddate , alias_p1.openstate , alias_p1.name, alias_p1.processinstanceid ,

9 alias_p1.asset , rownum rn from(select alias_p.pendingid, alias_p.workitemid, alias_p.operationid,

10 alias_p.operationkey, alias_p.title, alias_p.sendercn, alias_p.operatedes, alias_p.pendingstate,

11 alias_p.parameter, alias_p.createdate, alias_p.deptname, alias_p.completeddate , alias_p.openstate ,

12 pd.name, w.processinstanceid , eam_db.concatassetname( alias_p.operationkey, alias_p.operationid )

13 asset from WF_Pending alias_p, WF_WorkItem w, WF_ProcessDefinition pd, WF_ProcessInstance pi

14 where alias_p.ownerid='qinxue' and alias_p.pendingstate in(0,3,5,7,9,10,11,12)

15 and (alias_p.deptname=' 审控部信息处 ' or alias_p.deptname='' or alias_p.deptname is null)

16 and w.workitemid = alias_p.workitemid and pi.processinstanceid = w.processinstanceid

17 and pi.completeddate is null and pd.processdefinitionid = w.processdefinitionid order by alias_p.createdate desc) alias_p1 where rownum <=10)

alias_p2 where rn>=1;

已选择 10 行�?/span>

执行计划

----------------------------------------------------------

0 SELECT STATEMENT Optimizer=CHOOSE (Cost=10 Card=1 Bytes=2507

)

1 0 VIEW (Cost=10 Card=1 Bytes=2507)

2 1 COUNT (STOPKEY)

3 2 VIEW (Cost=10 Card=1 Bytes=2494)

4 3 SORT (ORDER BY STOPKEY) (Cost=10 Card=1 Bytes=167)

5 4 NESTED LOOPS (Cost=8 Card=1 Bytes=167)

6 5 NESTED LOOPS (Cost=7 Card=1 Bytes=162)

7 6 NESTED LOOPS (Cost=6 Card=1 Bytes=134)

8 7 TABLE ACCESS (FULL) OF 'WF_PENDING' (Cost=5

Card=1 Bytes=111)

9 7 TABLE ACCESS (BY INDEX ROWID) OF 'WF_WORKITE

M' (Cost=1 Card=3 Bytes=69)

10 9 INDEX (UNIQUE SCAN) OF 'SYS_C003694' (UNIQ

UE)

11 6 TABLE ACCESS (BY INDEX ROWID) OF 'WF_PROCESSDE

FINITION' (Cost=1 Card=1 Bytes=28)

12 11 INDEX (UNIQUE SCAN) OF 'SYS_C003684' (UNIQUE

)

13 5 TABLE ACCESS (BY INDEX ROWID) OF 'WF_PROCESSINST

ANCE' (Cost=1 Card=1 Bytes=5)

14 13 INDEX (UNIQUE SCAN) OF 'SYS_C003662' (UNIQUE)

�l�计信息

----------------------------------------------------------

314 recursive calls

0 db block gets

29433 consistent gets

0 physical reads

0 redo size

2153 bytes sent via SQL*Net to client

372 bytes received via SQL*Net from client

2 SQL*Net roundtrips to/from client

101 sorts (memory)

0 sorts (disk)

10 rows processed

其中一致读辑ֈ��q?万次�Q�关联调用出�?14�ơ。排序数��g��非常多，昄��W�一目标是把�q�两个数据降下来�?br />通过�q�一步的分析。发现出现这些问题的主要原因是调�?font size="3">eam_db.concatassetname( alias_p.operationkey, alias_p.operationid )�q�个包�?br />开始考虑直接在sql外层做关联，不用function来实现。利用聚集函数来合�ƈ数据�?br />着手徏立：

聚集函数�Q� CREATE OR REPLACE FUNCTION F_ASSETLINK(P_STR VARCHAR2) RETURN VARCHAR2
AGGREGATE USING asset_link;

----------------------
创徏type�Q�CREATE OR REPLACE TYPE ASSET_LINK AS OBJECT (
STR VARCHAR2(30000),
STATIC FUNCTION ODCIAGGREGATEINITIALIZE(SCTX IN OUT ASSET_LINK) RETURN NUMBER,
MEMBER FUNCTION ODCIAGGREGATEITERATE(SELF IN OUT ASSET_LINK, VALUE IN VARCHAR2) RETURN NUMBER,
MEMBER FUNCTION ODCIAGGREGATETERMINATE(SELF IN ASSET_LINK, RETURNVALUE OUT VARCHAR2, FLAGS IN NUMBER) RETURN NUMBER,
MEMBER FUNCTION ODCIAGGREGATEMERGE(SELF IN OUT ASSET_LINK, CTX2 IN ASSET_LINK) RETURN NUMBER
)
------------------------------------------------------

创徏type body�Q�CREATE OR REPLACE TYPE BODY ASSET_LINK IS
STATIC FUNCTION ODCIAGGREGATEINITIALIZE(SCTX IN OUT ASSET_LINK) RETURN NUMBER IS
BEGIN
SCTX := ASSET_LINK(NULL);
RETURN ODCICONST.SUCCESS;
END;
MEMBER FUNCTION ODCIAGGREGATEITERATE(SELF IN OUT ASSET_LINK, VALUE IN VARCHAR2) RETURN NUMBER IS
BEGIN
SELF.STR := SELF.STR ||','|| VALUE;
RETURN ODCICONST.SUCCESS;
END;
MEMBER FUNCTION ODCIAGGREGATETERMINATE(SELF IN ASSET_LINK, RETURNVALUE OUT VARCHAR2, FLAGS IN NUMBER) RETURN NUMBER IS
BEGIN
RETURNVALUE := SELF.STR;
RETURN ODCICONST.SUCCESS;
END;
MEMBER FUNCTION ODCIAGGREGATEMERGE(SELF IN OUT ASSET_LINK, CTX2 IN ASSET_LINK) RETURN NUMBER IS
BEGIN
NULL;
RETURN ODCICONST.SUCCESS;
END;
END;
调整sql如下�Q?br />select alias_p.pendingid, alias_p.workitemid, alias_p.operationid,
   alias_p.operationkey, alias_p.title, alias_p.sendercn, alias_p.operatedes, alias_p.pendingstate,
   alias_p.parameter, alias_p.createdate, alias_p.deptname, alias_p.completeddate , alias_p.openstate ,
   pd.name, w.processinstanceid
   --,T.ASSETCLASS3 ASSET
   ,f_assetlink(d3.typename) ASSET
   --,eam_db.concatassetname( alias_p.operationkey, alias_p.operationid ) asset
   from WF_Pending alias_p, WF_WorkItem w,
   WF_ProcessDefinition pd, WF_ProcessInstance pi
   , tb_asset_dizhiyihao T,dic_app_wfconfig wfc,dic_app_assettype3 d3
   where alias_p.ownerid='qinxue'
   and alias_p.pendingstate in(0,3,5,7,9,10,11,12)
   and (alias_p.deptname='审控部信息处' or alias_p.deptname='' or alias_p.deptname is null)
   and w.workitemid = alias_p.workitemid
   and pi.processinstanceid = w.processinstanceid
   and pi.completeddate is null
   and pd.processdefinitionid = w.processdefinitionid
   AND    t.pk_businessid = alias_p.operationid
          and alias_p.operationkey = wfc.memo_1
          and wfc.wfconfig_code = t.wfconfig_code
   and t.assetclass3 = d3.assettype3_id
   group by alias_p.pendingid, alias_p.workitemid, alias_p.operationid,
   alias_p.operationkey, alias_p.title, alias_p.sendercn, alias_p.operatedes, alias_p.pendingstate,
   alias_p.parameter, alias_p.createdate, alias_p.deptname, alias_p.completeddate , alias_p.openstate ,
   pd.name, w.processinstanceid
   order by alias_p.createdate desc
得到�l�计数据如下�Q?br />C:\Documents and Settings\ibm>sqlplus /nolog

SQL*Plus: Release 10.2.0.1.0 - Production on 星期一 9�?10 19:27:33 2007

SQL> conn jic/jic@name
已连接�?br />SQL> set autotrace traceonly
SQL> select alias_p.pendingid, alias_p.workitemid, alias_p.operationid,
2     alias_p.operationkey, alias_p.title, alias_p.sendercn, alias_p.operatedes, alias_p.pendingstate,
3     alias_p.parameter, alias_p.createdate, alias_p.deptname, alias_p.completeddate , alias_p.openstate ,
4     pd.name, w.processinstanceid
5     --,T.ASSETCLASS3 ASSET
6     ,f_assetlink(d3.typename) ASSET
7     --,eam_db.concatassetname( alias_p.operationkey, alias_p.operationid ) asset
8     from WF_Pending alias_p, WF_WorkItem w,
9     WF_ProcessDefinition pd, WF_ProcessInstance pi
10     , tb_asset_dizhiyihao T,dic_app_wfconfig wfc,dic_app_assettype3 d3
11     where alias_p.ownerid='qinxue'
12     and alias_p.pendingstate in(0,3,5,7,9,10,11,12)
13     and (alias_p.deptname='审控部信息处' or alias_p.deptname='' or alias_p.deptname is null)
14     and w.workitemid = alias_p.workitemid
15     and pi.processinstanceid = w.processinstanceid
16     and pi.completeddate is null
17     and pd.processdefinitionid = w.processdefinitionid
18     AND    t.pk_businessid = alias_p.operationid
19            and alias_p.operationkey = wfc.memo_1
20            and wfc.wfconfig_code = t.wfconfig_code
21     and t.assetclass3 = d3.assettype3_id
22     group by alias_p.pendingid, alias_p.workitemid, alias_p.operationid,
23     alias_p.operationkey, alias_p.title, alias_p.sendercn, alias_p.operatedes, alias_p.pendingstate,
24     alias_p.parameter, alias_p.createdate, alias_p.deptname, alias_p.completeddate , alias_p.openstate ,
25     pd.name, w.processinstanceid
26     order by alias_p.createdate desc;

已选择30行�?/p>

执行计划
----------------------------------------------------------
   0      SELECT STATEMENT Optimizer=CHOOSE (Cost=19 Card=1 Bytes=205)
   1    0   SORT (GROUP BY) (Cost=19 Card=1 Bytes=205)
   2    1     NESTED LOOPS (Cost=17 Card=1 Bytes=205)
   3    2       HASH JOIN (Cost=16 Card=1 Bytes=191)
   4    3         HASH JOIN (Cost=11 Card=1 Bytes=183)
   5    4           NESTED LOOPS (Cost=8 Card=1 Bytes=167)
   6    5             NESTED LOOPS (Cost=7 Card=1 Bytes=139)
   7    6               NESTED LOOPS (Cost=6 Card=1 Bytes=134)
   8    7                 TABLE ACCESS (FULL) OF 'WF_PENDING' (Cost=5
          Card=1 Bytes=111)

9 7 TABLE ACCESS (BY INDEX ROWID) OF 'WF_WORKITE
M' (Cost=1 Card=1 Bytes=23)

10 9 INDEX (UNIQUE SCAN) OF 'SYS_C004347' (UNIQ
UE)

11 6 TABLE ACCESS (BY INDEX ROWID) OF 'WF_PROCESSIN
STANCE' (Cost=1 Card=1 Bytes=5)

12 11 INDEX (UNIQUE SCAN) OF 'SYS_C004334' (UNIQUE
)

13 5 TABLE ACCESS (BY INDEX ROWID) OF 'WF_PROCESSDEFI
NITION' (Cost=1 Card=1 Bytes=28)

14   13               INDEX (UNIQUE SCAN) OF 'SYS_C004329' (UNIQUE)
15    4           TABLE ACCESS (FULL) OF 'DIC_APP_WFCONFIG' (Cost=2
          Card=24 Bytes=384)

16 3 TABLE ACCESS (FULL) OF 'TB_ASSET_DIZHIYIHAO' (Cost=4
Card=310 Bytes=2480)

17 2 TABLE ACCESS (BY INDEX ROWID) OF 'DIC_APP_ASSETTYPE3'
(Cost=1 Card=1 Bytes=14)

18 17 INDEX (UNIQUE SCAN) OF 'PK_DIC_APP_ASSETTYPE3' (UNIQ
UE)

�l�计信息
----------------------------------------------------------
          6 recursive calls
          0 db block gets
        847 consistent gets
          0 physical reads
          0 redo size
       4102 bytes sent via SQL*Net to client
        383 bytes received via SQL*Net from client
          3 SQL*Net roundtrips to/from client
          1 sorts (memory)
          0 sorts (disk)

其中排序�?01变�ؓ1��?br />一致读降�ؓ847。下降非常客�?br />兌��调用仅有6�ơ�?br />此sql性能优化非常可观。至此优化结束：)

kebo 2007-09-10 19:35 发表评论

利用mv做跨

kebo — Tue, 14 Aug 2007 07:32:00 GMT

数据库迁�U�过�E�中需要目标数据库和原数据库结构相同和数据是最新�?br />��Z��保持最新数据和快速切换就不可以利用exp/imp的方式，利用data guard则有�q�_��的问题�?br />在这�U�情况下�Q�可以利用on prebuilt table选项创徏mv。然后同步运行一�D�|��间。一�ơ切换，删除
mv�Q�这�U�情况下可以保持同名的表。mv删除。达到数据同步，切换的目标�?br />

kebo 2007-08-14 15:32 发表评论

kebo — Tue, 17 Jul 2007 08:55:00 GMT

select z.a,z.b,z.c from (select lag(t.a,2)over(order by t.a) pp_val, lag(t.a,1)over(order by t.a) p_val, t.a, lead(t.a,1)over(order by t.a) n_val, lead(t.a,2)over(order by t.a) nn_val, t.b,t.c from test2 t) z where z.a = '1' and ((z.p_val = '1' and z.pp_val = '1') or (z.p_val = '1' and z.n_val = '1') or (z.n_val = '1' and z.nn_val = '1'));

kebo 2007-07-17 16:55 发表评论

夜读tom感悟

kebo — Tue, 10 Jul 2007 16:15:00 GMT

查询�l�果xml化： select dbms_xmlquery.getXML(' select * from test')from dual; 表的历史记录�Q�执行：begin dbms_wm.enableversioning('tablename','VIEW_WO_OVERWRITE') 则对�q�个表的cud操作都会记录历史�Q�这个在�pȝ��中做历史再好不过了�? �q�有�l�于被tom说明�Q�分析函数原来就是矩阵运��，呵呵�Q�终于知道这�c�d��数的数学原理了，呵呵�Q�真爽，�ȝ��知道怎么理解了�? �q�有宝贝儉K��到新��目�Q�需要很��q��会计知识了，�q�被老板��p��Q�导致不好工作，希望她不要烦��|��开心工�?img src ="http://www.tkk7.com/kebo/aggbug/129475.html" width = "1" height = "1" />

kebo 2007-07-11 00:15 发表评论

lighttped(window)+scgi+rails配置方式

kebo — Tue, 02 Jan 2007 13:08:00 GMT

配置:server.modules
server.modules              = (
                                "mod_rewrite",
                                "mod_redirect",
                                "mod_access",
                                "mod_status",
                                "mod_scgi",
                                "mod_accesslog" )
配置
index-file.names            = ( "index.php", "index.html",
                                            "index.htm", "default.htm" )
#### accesslog module
accesslog.filename          = "c:/depot/log/access.log"
static-file.exclude-extensions = ( ".php", ".pl", ".fcgi",".scgi" )       标红的需要加�?br />
## bind to port (default: 80)
server.port                = 8080------------------讉K��端口,我设�|?080

## error-handler for status 404
server.error-handler-404   = "/dispatch.scgi"
-----------------------------------------------
scgi.server = ("dispatch.scgi" => ((
"host" => "127.0.0.1",
"port" => 9999,
"check-local" => "disable"
)) )

scgi.debug=3

status.status-url = "/server-status"
status.config-url = "/server-config"

-------------------------------------
## server.virtual-* options
server.document-root = "c:/depot/public"
记得�q�个需要设�|�到public目录,不然按默认的rails生成的文档一些东西访问不来的
-----------------------------------------------------------------------------------------------------
需要注意的是你开发的�E�序需要放在c盘下,不然找不到config/scgi.yaml�q�个文�g
然后lighttpd必须装在c盘下(当前版本�?.4.11)

kebo 2007-01-02 21:08 发表评论

kebo — Wed, 27 Dec 2006 14:24:00 GMT

今天�l�数据库执行@spcreate.sql老是�?
SP2-0734:unknown command beginning "spcreate.s..." - rest of line ignored.
郁闷坏了。经�q�一番折腑֎�来是
solution Description:
=====================
You need to enter a valid SQL*Plus command.
In this case, you cannot start svrmgrl from within SQL*Plus,
you have to start svrmgrl from the command prompt.
This error will also occur when trying to execute a
the @ symbol is mapped to the key 'Kill' from the user's keyboard.
The way to find out the current keyboard mapping in a unix environment is using the command 'stty -a'.
The way to correct problem is to map 'Kill' to some other keyboard symbol.
The command example would be 'stty kill ^U'.
Having remapped the key you would then log into SQL*Plus and execute script.
-------------------------------�U�念一�?br />如果出现�I��报错的话记得执行:
SET SQLBLANKLINES ON

kebo 2006-12-27 22:24 发表评论

常看帖子的好处，特别是高手掐架的帖子

kebo — Tue, 31 Oct 2006 20:11:00 GMT

呵呵�Q�最�q�吵架比较多�Q�我们项目和另公司合作，�l�常出现两家吉|��的事�Ӟ��弟不信参与其中。通过具体实践�Q�发现我现在很容易发现别��话的漏洞。然后常常质问对方大哥无法可��_��呵呵�Q�痛快�? 我想�q�是我比较最�q�比较喜�Ƣ高手们争论话题的帖子，��x��高吵架水�q�的人多学学(别用在mm�w�上^^)

kebo 2006-11-01 04:11 发表评论

听oracle讲��感受

kebo — Mon, 02 Oct 2006 17:43:00 GMT

今天听了下oracle讲��,一个感受，以后不敢操作数据库了�Q�发现对大多数数据库命��o产生的后果和影响都不是很清楚。想起以前切换双�?br />
的时候也出现eygle说的问题�Q�然来真的对数据库基��知识预备不��啊。感觉以前真是可以称为“虎胆”哦。难怪老幕以前佩服我！�Q�！卡卡卡�?br />
恩，感觉oracle入门现在都够不上�Q�不敢再�l�别��决问�?)免得惹笑话。梳理了一下，估计也就对sql,集合的理解熟悉点�Q�有�Ҏ��我哦。低

调，低调......学习学习......

kebo 2006-10-03 01:43 发表评论