to avoid the use of reserved words", because the existence of illegal identities should not be facilitated:
First of all, there is a technology-independent aspect: At some point, "actually use the reserved word" will become gossip, right? I've seen a lot of this kind of situation. Since we all know not to use reserved words, why bother?
DBAs or other people who are accustomed to command line, write large amounts of SQL, and occasionally have to pay attention to the field escape, very a
inti,j; - for(i=0; i)Wuyi { the for(j=0;j4; j + +) - { Wu if(s[i].score[j] -) - { Aboutprintf"\n%s failed:", s[i].name); $printf"\nscores:"); - for(j=0;j4; j + +) -printf"%d\t", S[i].score[j]); - Break; A } + } the } -}struct type and Int,char, array and other basic types, is also a C language data type, but this is a custom data type, we can be based on the requirements of various ba
One, configuring DNS and search DomainsSpecially configured DNS The file is/etc/resolv.conf, and we can ifcfg-eth0 the NIC configuration and other configuration files specified in the.Demo Sample:[Email protected] desktop]# cat/etc/resolv.confSearch example.comNameServer 192.168.0.254[Email protected] desktop]#Second, configure host name[Email protected] desktop]# cat/etc/sysconfig/networkNetworking=yesHostname=instructor.example.comNisdomain=notexample[Email protected] desktop]#Third, configure
2.1 obtain the names of all tables in the database.
Sample Data:
Statement:
Select T. Name 'table name' from sysobjects t where objectproperty (T. ID,N 'isusertable') = 1
Or use select name from sysobjects where type = 'U'
Execution result:
2.2 obtain the names of all fields in all tables
Statement:
Select distinct C. Name 'field name'From sysobjectsT, syscolumns CWhere T. ID = C. IDAndObjectproperty (T. I
addition, someone may be looking for a shared Application List. Let's talk about it here.
Obtain the code of the shared application:
/**
Because of this method, the returned packageinfo object is not. But resolveinfo. Therefore, the methods for obtaining images, application names, and package names are different:
Packagemanager pmanager = messagesendactivity. this. getpackagemanager ();
Summary:
How to
The naming rules for files in Unix are not as strict as those in Windows. In other words, the characters that cannot be contained in file names in many Windows operating systems can be used in Unix operating systems. Therefore, some administrators who transfer data from the Windows operating system will feel particularly uncomfortable. Today, I will summarize the differences between the naming rules of the two operating systems to help the Windows Sys
The story about the conflict between function names and library function names.
Try the C ++ template and start a function with a relatively large size, called max.
Then I found a lot of errors.
# Include
Then Error
Think of it as a naming conflict, Orz ....
The second time
Get all parameters and parameter names in the request (parameter names are automatically obtained)-[Java]
There are two ways in the request.Request.getparametermap ();Request.getparameternames ();I want to get it in both ways.1. With Request.getparameternames ();Enumeration Enu=request.getparameternames ();while (Enu.hasmoreelements ()) {String Paraname= (String) enu.nextelement ();System.out.println (paran
In the previous blog post
"Ant's Download and installation--mybatis" Preparation of learning notes (i), the author introduces the download and installation of Ant. This article will show you how to use ant to create a simple project as an example of getting started with Ant.
Here first to share with you the author of the new technology to learn a little. Each tec
This article was completed by socks. Blog Address: http://blog.csdn.net/zhaokaiqiang1992Reprint please explain.Tossing the whole afternoon. Baidu had an afternoon, and finally realized the use of ant for Android application of bulk packaging, but also a matter of my mind. Although this part of the online tutorial also has, but the sense of writing is not specific.What's more important is that. The differences between the various methods are relatively
Ant is a very good OpenSource sub-project of jakarta and a java-based compilation tool. The following describes how to install ant in linux: 1. DownloadSlaveHttp://ant.apache.org/bindownload.cgiYou can download the latest tar package: apache-ant-1.6.2.tar.gz, if it is a windows environment is a zip file, decompress, in the system environment variables set ANT_HO
Mybatis is another excellent ORM framework. Considering that it may be used in the future, I decided to learn it in advance for the emergency. In order to urge yourself to learn, and to summarize and share with you in a timely manner, I am preparing to write a series of blog posts on mybatis study notes recently. Please pay more attention to, urge, and criticize and correct those who are interested! Thank you!
I did not use any IDE tools in prepare for writing the first Hibernate program by hand
Ant (Another Neat Tool) is a mainstream build tool that is now used by almost all Java open source projects to build its own projects, and the mainstream IDE provides good support for Ant.
Ant is fully developed using the Java language, and open source, easy to use extensible, ant the most important task is to build t
purpose of the command is very extensive, above just the pointer file name and directory name of the naming characteristics to extract some special cases. ii. basename and DirName ${} is not a command specifically designed to extract filenames and directory names, so the basename and DirName commands are specifically prepared for this.1, basenameThe purpose of this command is to extract the file name from the path, using the basename name [SUFFIX].
Get table names and comments:Select Relname as Tabname,cast (obj_description (Relfilenode, ' pg_class ') as varchar) as comment from Pg_class Cwhere relkind = ' R ' and Relname not-like ' pg_% ' and relname not-like ' sql_% ' ORDER by RelnameFilter out the Sub-table:Conditional and relchecks=0 can beGets the field name, type, comment, whether it is empty:SELECT col_description (A.attrelid,a.attnum) as Comment,format_type (A.atttypid,a.atttypmod) as ty
--oracle See all the user's table names, table gaze, field name, field gaze, is empty, field type SELECT DISTINCT table_column.*, table_nallable. Data_type, table_nallable. NULLABLE from (SELECT DISTINCT Utc.table_name table_name, utc.comments table_comments, Ucc.column_name column_name, ucc.comments column_comments from User_tab _comments UTC, User_col_comments UCC where utc.table_name = Ucc.table_name and utc.table_name not li
Ant Introduction Ant is a Java-based build tool. It is theoretically similar to the make tool, but overcomes some of the inherent flaws of make.Traditional make is a build tool based on the operating system shell, although it is also possible to extend the make tool based on the working OS, but it is difficult to build across platforms. Ant is based on Java exten
Five
.
Use
Ant
running local Programs
1. use ant to run Windows in a batch file to run an external program within ant, use the
Here's an example: Batch file: Test.bat
@echo offecho Hello > Test.txt
Posted in @ November 16, 2005 14:44:00 | Comments (6)
The omnipotent "Ant"--
Tags: Apache combined with NmonNmon and Apache for specific monitoringDemand:Company business requirements Performance testing, need to monitor 20 nodes simultaneously, record cup, memory, IO and other indicators;Through the network data trial open source software nmon can monitor;Thinking:If you need to monitor 20 machines at the same time, it is difficult to run the Nmon estimate by the full-beat command, and I think how to run the script in this machine to implement the remote command operati
Using Xmlbean to read and write XML files is very convenient, mainly through XML files generated XSD is called the Schema file, and then use Scomp (is the Xmlbean provided a compilation tool, it in the bin directory), through this tool, we can Schema file to generate Java Classes. This step to be implemented through ANT, it is very convenient and simple, as follows: (Be sure to add Jsr173_1.0_api.jar to the Ant
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