best old rpgs

Trigger is an action triggered by an event. These events include INSERT statements, UPDATE statements, and DELETE statements. When the database executes these events, the trigger is activated to perform the appropriate action."1" has only one execution statementCreate trigger Trig_booksum after Inserton T_book for each rowupdate t_booktype set booksum=booksum+1 where New.booktypeid =t_booktype.id;When inserted, the number of books in the book category plus 1"2" Multiple execution statementsDelim

-29_11- -- --am.log forMore details.The 1-6 records indicated above indicate the method of error resolution to be reported separately:1. Check if the port number inside the $oracle_home/network/admin/listener.ora is correctly set to 1521;2. Check the status of the listener: LSNRCTL status See if it starts normally3. If the listener does not have a service to register ORCL this instance, you need to register it.Sqlplus/as SYSDBAAlter SYSTEM Register5. That is, the listener only launches on the vi

;+------------------+------------ ---------+--------------------------+| Sort_buffer_size | Read_rnd_buffer_zie | Max_length_for_sort_data |+------------------+---------------------+--------------------------+| 2.00MB | 2.00MB | 1024x768 |+------------------+---------------------+--------------------------+1 row in Set (0.00 sec)Related data for the demo table:Mysql> Select Table_name,table_rows,concat (Truncate (data_length/1024/1024,2), ' MB ') as ' t

17.85437188 34.47632703] 测试集中实际房价前5条数据: 14.3 22.3 22.6 20.6 34.9] Taking the first data in this result set as an example, we predict that the price of a house is 174,000, while the actual price is 143,000. But to be honest, the above price data can only be used for testing algorithms, we really want to predict the price, the original data is not so full and regular, so in machine learning, data collection and cleaning is also a very important work, dirty live dirty also have to dry, the

If the DHCP server operating system is WINODWS Server 2003, you can use method one. If the DHCP server operating system is WINODWS Server 2000, you can use method two. Method One 1. Run the command at a command prompt at the original DHCP server: netsh dhcp server export :\dhcp.txt all 2. Stop the original DHCP Server service when the prompts are shown in Figure 1. Figure 1 Prompt after completion of command 3. After you copy the files to the new DHCP server C disk, at the command prompt

server--initialize or--initialize-insecure, the server that normally starts (that is, none of these options), and specifies a new password for ' root ' @ ' localhost ':---start the server.---linked to the server:If you use--initialize but do not use--initialize-insecure to initialize the data directory, connect to the root directory of the server using random passwords that are generated during server initialization:12Shell> Mysql-u Root-pEnter Password: (enter the random root password here)If

Tags: mysql updateScene:There are two of the following tablesTableA Id ROW1 ROW2 ROW3 ROW4 1 2 3 4 5 TableB Id rowa_id Rowa_row4 1 2 At the beginning of the table B only ID, rowa_id two fields, for some convenience reasons, and so on, now to add a field "Rowa_row4", now to the previous records to supplement the corresponding ROWA_ROW4 data;Analysis:My f

Tags: style blog color for SP file Data div logBetween my ability is limitedThis method is only suitable for small data volumesA huge amount of data, another way to find him.Step One: Write the bat batch fileEcho is removing the spare files and logs from 7 days ago ... forfiles/P"D:\Backup\OracleAutoBackup"/M ZYWL_*.DMP/D-7/C"cmd/c del @path"forfiles/P"D:\Backup\OracleAutoBackup"/M ZYWL_*.LOG/D-7/C"cmd/c del @path"echo Delete Complete ... echo is backing up the Oracle database ...ExpZywl/[email

Tag: Register BRE router exists reload conf device star RAMClear the password for the Cisco 1841 router:(1) The console line connects the computer and the router console port, through the terminal client connection, the router is powered on (if the device is started, press the power button, restart the router, wait for the router to start when the [Ctrl+break] key interrupts the normal boot process, into the ROM state.(2) Modify the value of the configuration register and restartThe value of the

My name is Liuzanyuan, from Linqing, Liaocheng, Shandong province.Not yet graduated, it belongs to the internship. Prior to the Heze Vocational College of Information Engineering Computer application Technology of a junior student. Originally came to our school to do the training is the 17 March, at that time I was in the confusion after graduation period, to practice after the feeling of learning this is also very good, although I did not know how to learn this future of how, also do not know h

There are two statements, but the results of the two statements are the same, but what are the differences in other aspects?1.select count (Ts.tid), Ts.tid from t_s ts,(select Tid from teacher where agewhere Ts.tid=t.tidandTs.sid in (select SID from student where age>12 Group by SID)Group BY Ts.tid;2.Select Teacher.tid,total from Teacher,(Select T_s.tid,count (*) total from student,t_s where Student.sid=t_s.sid and student.age>12 Group by T_s.tid) as tea_s Tu2whereTeacher.tid=tea_stu2.tidand tea

The old lady woke up, and her heart jumped so slowly that she could not afford it.The old lady thought, "Hello, you have to leave. This is just a day or two.The old lady is 76 years old and is still in good health. This year, it is very cold and hot. It is a fatal injury to the elderly. This is not the case. I think th

PHP is also 20 years old, PHP is also 20 years old today many of the world's most famous programming languages are old enough.　　For example, PHP yesterday after the birthday is 20 years old, Python is also 24 years old, HTML has been serving 22 years, Ruby and JavaScript 20

o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f">height:100.5pt'>o:href="http://img.epaper.com.tw/img/mouseelephant/20051027/01.gif" /> Luke: Pack boss, hello. Laemai: Luke! Hello, Skywalker. Luke: If I have heard from you, get up early every day and exercise. Recently, I feel that my team is very good and I am losing weight. Two kilograms . Tom: Congratulations! Health is the most important thing. Luke: That's right. Everyone said that my colors have changed. I

An article Excerpted from Qiu suo GE has a thorough analysis, which is more in-depth than the extensive articles about "programmers are young, this article analyzes the situation of the IT industry in China, the reasons why the "programmer is not over 30 years old" viewpoint is generated, and the mistakes of this viewpoint. This is an article that is both positive and rational. I like it (I don't like the so-called spam-up articles or passive frustrat

I have been extensively contacted by our programmers because of the working relationship. For them, the author found that the "programmer 30-year-old topic" contains more than 30 years of age to do what? It requires programmers, software companies and even the entire software industry to answer: "What professional programmers do we need to develop our software industry ?" How do programmers in the software industry take the professional path? How to h

I really don't know how to explain my mood when I write a blog at the moment. Today, when Sohu Hu said that the layout of the people was maintained, he suddenly saw a 71-year-old man who committed suicide due to being cheated of 2000 yuan in donations, the heart is indeed deeply stabbed. My tears burst into tears with an unspeakable grief. So an old man left? A "hope

ideas.The mathematician Duca castelmonte in bed, looking at the ceiling of the gecko, dusk think instead focusing how to another mathematician to describe the position of the gecko, suddenly an epiphany, came up with a Cartesian coordinate system. All the points in the world of geometry can be represented by a pair of two-tuple (coordinates), converting all of the plane geometry off the system into algebraic relationships. This is the origin of algebraic geometry. Duca Castelmonte's great work

It critic Xingdong to describe geeks: those addicted to interacting with people on the internet, such as chatting on QQ or ICQ, posting on Usenet or BBS, writing on blog sites, playing mud games, and writing shared software. Geek are not necessarily computer masters, but computers are their favorites. Today, geeks have become synonymous with fashion. The Geek, taken from the English word geek, is also an amazing guest. The clown of strange performances in the carnival, in recent years, with the

Reprinted from: http://blog.ifeng.com/article/17590948.html With the popular idol drama "I may not love you", the word "Early Childhood" is gradually known. Lin yichen, a thirty-year-old white-collar engineer, is facing a dilemma where both the mind and the body seem to be older than the actual age. This situation is known as the first aging. In fact, the word "Early Childhood" is fictitious in the drama. However, the 50 initial and