博客园_费费笔记

Oracle trigger Demo

2011-08-05T02:55:00Z

CREATE TABLE "QTJSB"."AAA_LOG"
( "AAA_NO" NUMBER(*,0),
"LOGS" VARCHAR2(4000 BYTE),
"LOG_DT" DATE
) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
TABLESPACE "USERS" ;

CREATE TABLE "QTJSB"."AAA"
   ( "AAA_NO" NUMBER(*,0),
"COMMENTS" VARCHAR2(400 BYTE)
   ) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
TABLESPACE "USERS" ;

   COMMENT ON COLUMN "QTJSB"."AAA"."AAA_NO" IS 'AAA_NO just for trigger test';

   COMMENT ON TABLE "QTJSB"."AAA" IS 'just for trigger test';

CREATE OR REPLACE TRIGGER "QTJSB"."FF_TRIGGER_AAA"
before INSERT ON AAA
referencing old as old_value
new as new_value
for each row
WHEN (new_value.AAA_no>100) DECLARE v_comment VARCHAR2(4000 BYTE);v_no number;
BEGIN
       v_comment := 'AAA_no is big, comment as:' || :new_value.comments;
       v_no := :new_value.AAA_NO + 1000;
       insert into AAA_log(AAA_NO,LOGS,LOG_DT) VALUES(v_no,v_comment,sysdate);
END;

/
ALTER TRIGGER "QTJSB"."FF_TRIGGER_AAA" ENABLE;

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Oracle sql trace

2011-07-12T08:12:00Z

http://orafaq.com/wiki/SQL_Trace

Tracing an entire database

To enable SQL tracing for the entire database, execute:

ALTER SYSTEM SET sql_trace = true SCOPE=MEMORY;

To stop, execute:

ALTER SYSTEM SET sql_trace = false SCOPE=MEMORY;

Identifying trace files

Trace output is written to the database's UDUMP directory.

The default name for a trace files is INSTANCE_PID_ora_TRACEID.trc where:

INSTANCE is the name of the Oracle instance,
PID is the operating system process ID (V$PROCESS.OSPID); and
TRACEID is a character string of your choosing.

For me the path locates at \app\Figo.Fei\diag\rdbms\orcl\orcl\trace

when search in Windows, pls notice that some folders are inaccessible, which need to be set by manual.

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Webservice

2011-07-12T08:06:00Z

WSDL的详解笔记

http://blog.csdn.net/guolimin1118/archive/2010/04/24/5522122.aspx

如果看懂一个WSDL文档
http://blog.csdn.net/gangbo_5958196/archive/2010/04/10/5466482.aspx

利用wsdl.exe生成webservice代理类

http://apple8160.blog.163.com/blog/static/79581470201042494554755/

Developing a REST Web Service using C# - A walkthrough

http://www.codeproject.com/KB/webservices/RestWebService.aspx

Creating and consuming Web services using the SOAP Proxy Client Object

http://www.codeproject.com/KB/XML/SOAPWSDL.aspx

C#访问带有安全协议的Webservice（https、生成wsdl代理类）

http://www.cnblogs.com/angleSJW/archive/2010/03/16/1687442.html

常用Web Service汇总（天气预报、时刻表等）
http://developer.51cto.com/art/200908/147125.htm

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System.Transactions

2011-04-25T07:34:00Z

There are times you want to bring transactions in your programs, especially you're doing finicial stuff.

I found two good articles tell about the old story of transaction models and the new Transaction Management in .NET 2.0(System.Transactions), hope helpful to you as well:

http://www.simple-talk.com/dotnet/.net-framework/.net-2.0-transaction-model/

http://msdn.microsoft.com/en-us/library/ms973865.aspx

Relevant links:

http://msdn.microsoft.com/en-us/library/system.transactions.transactionscope.aspx

http://msdn.microsoft.com/en-us/library/system.transactions

http://msdn.microsoft.com/en-us/library/system.transactions.transactionoptions.aspx

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Debugging tips in VS

2011-04-20T07:51:00Z

1. Sometimes you may need to tell debugger to break when some variable equals to a value as follows

if (MyStringVariable == "LKOH")
Debugger.Break();

Refer to System.Diagnostics namespace

http://msdn.microsoft.com/en-us/library/system.diagnostics.debugger.break.aspx

2. Remember VS debugger shortcuts helps:

Shortcut	Description
Ctrl-Alt-V, A	Displays the Auto window to view the values of variables currently in the scope of the current line of execution within the current procedure
Ctrl-Alt-Break	Temporarily stops execution of all processes in a debugging session. Available only in run mode
Ctrl-Shift-F9	Clears all of the breakpoints in the project
Ctrl-Alt-Q	Displays the Quick Watch dialog with the current value of the selected expression. Available only in break mode. Use this command to check the current value of a variable, property, or other expression for which you have not defined a watch expression
Ctrl-Shift-F5	Terminates the current debugging session, rebuilds if necessary, and then starts a new debugging session. Available in break and run modes
F5	If not currently debugging, this runs the startup project or projects and attaches the debugger. If in break mode, this allows execution to continue (i.e., it returns to run mode).
Ctrl-F5	Runs the code without invoking the debugger. For console applications, this also arranges for the console window to stay open with a "Press any key to continue" prompt when the program finishes
F11	Executes code one statement at a time, tracing execution into function calls
Shift-F11	Executes the remaining lines of a function in which the current execution point lies
F10	Executes the next line of code but does not step into any function calls
Shift-F5	Available in break and run modes, this terminates the debugging session
F9	Sets or removes a breakpoint at the current line

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VS shortcuts

2011-04-20T07:27:00Z

link1: http://www.codinghorror.com/blog/files/Visual%20Studio%20.NET%202005%20Keyboard%20Shortcuts.htm
link2: http://www.dofactory.com/ShortCutKeys/ShortCutKeys.aspx

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VS中的build events

2011-03-09T09:32:00Z

执行多行命令,只能把命令写在一个批处理文件中,然后通过调用批处理来执行.

1.在Solution explorer中用context meun查看project的property.

2.选择Build Events,可以看到Pre-build 和Post-build event command line,以及运行Post-build event 的条件

//——————————————————

用法收集

1.build完后修改build产物的名字(后缀),并覆盖已有的同名文件.

copy $(TargetFileName) $(TargetName).XXX y

2. 调用外部命令或批处理:

call "C:\Program Files\XXX.exe"

3. 条件判断:

IF NOT $(ConfigurationName) == Release GOTO end

call "C:\Program Files\XXX.exe" $(ProjectDir)$(TargetName).cvp

:end

4.web project 自动部署

copy $(TargetDir)*.* \\MyServer\MyService\bin
copy $(ProjectDir)*.ascx http://www.cnblogs.com/feishunji/admin/file:///MyService

5. copy from one path to the other path

Copy "$(ProjectDir)pri.bin" "$(SolutionDir)$(SolutionName)\$(OutDir)"

copy pri.bin(file name) from $(ProjectDir) to $(SolutionDir)$(SolutionName)\$(OutDir)

引用自：http://hi.baidu.com/isafesoft/blog/item/e6be622531bf8109908f9d4d.html

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bat中的注释符

2011-03-09T04:05:00Z

批处理的注释是什么,是:

rem

对了,是这个了,在这个后面跟的就不会给批,使用方法:

rem 打开程式循环开始

在批处理中，段注释有一种比较常用的方法：

goto start
      = 可以是多行文本，可以是命令
      = 可以包含重定向符号和其他特殊字符
      = 只要不包含 :start 这一行，就都是注释
     :start

另外，还有其他各种注释形式，比如：
     1、:: 注释内容（第一个冒号后也可以跟任何一个非字母数字的字符）
     2、rem 注释内容（不能出现重定向符号和管道符号）
     3、echo 注释内容（不能出现重定向符号和管道符号）〉nul
     4、if not exist nul 注释内容（不能出现重定向符号和管道符号）
     5、:注释内容（注释文本不能与已有标签重名）
     6、%注释内容%（可以用作行间注释，不能出现重定向符号和管道符号）
     7、goto 标签注释内容（可以用作说明goto的条件和执行内容）
     8、:标签注释内容（可以用作标签下方段的执行内容）

引用自：http://blog.sina.com.cn/s/blog_605f5b4f0100okdq.html

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DataTable 那些事（二）

2010-12-31T08:23:00Z

来不及写，这里有好文：http://msdn.microsoft.com/en-us/library/ch2aw0w6.aspx

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DataTable 那些事（一）

2010-12-31T08:12:00Z

I don't think many of u have experience with DataTable.Load or DataTable.Merge, so here I take time to write it down for future check and records.

The MSDN document has a good sample and explanation about Load method: http://msdn.microsoft.com/en-us/library/4e06d41f.aspx

Too long for a lazy man to read, hum? Here is the sample running result, which I think can clarify the things up:

One item has a historical original value and a current value.

LoadOption.OverwriteChanges option means to overwrite both//全部覆盖
LoadOption.PreserveChanges option means to overwrite unchanged current value and original value//覆盖未改变的最新值和所有原始值
LoadOption.Upsert option means to overwrite undeleted current value and keep original value//覆盖未删除的最新值，保留原始值

I guess Load method internally calls Merge method.

If you want to append a DataTable to another, you'd use DataTable.Rows.Add method, instead.

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