Title:Check out the name of each employee, salary, department name, salary at the company level and the name of the leader, the salary of the leader, and the corresponding rank of the leaderThis is the EMP below the default Scott user of Oracle. A study questions between the Dept and the Salgrade table.Employee table (
Reading guide:
The software industry is in extreme shortage of talents, and the company is eager for help. The data shows that the average cycle of 1000 graduates from submitting resumes to obtaining offer is only 10 days, with an average of 5 companies interviewed per person.
The software industry salary is very attractive to college graduates. Data shows that of the 1000 graduates, the annual salary
There are a lot of places where python can be used. From entry-level white to professional-grade big guy, data mining, scientific computing, image processing, artificial intelligence, Python can do it.Perhaps because of this universal attribute, there are now many small partners who are starting to learn Python.Now the popularity of Python has come to the programmer's circle, entered the xxx "new generation
All say that programmers pay a high salary, as a Java developer programmer, get 20,000 of the salary, what technology needs, the new programmer how to achieve a monthly salary of 20,000.
In general, Java programmers with a monthly salary of 20,000 belong to intermediate pro
even call the interface, pointing out the problem with XXX data and asking when it will be repaired.The leader asked, from a mouth can only get not his pot, and B can clearly reply, the cause of the problem, who is responsible for the problem and when to repair. Although this matter is not directly related to B, the practice of B is "reliable" and gives a good impression. Someone summed up the people are all things have an account, pieces of the landing, everything has an echo. The premise of b
The following is the technical grade manual of the company version 1.3. Share it with you. At the same time, the company has long-term recruitment of L3 and L4. Interested please Email: zhonghua.li@qq.com
Hangzhou sky blue software Co., Ltd.
Developer technical level manual V1.3
Li Zhonghua2011/8/23
DirectoryLevel 1 and junior programmers (L1)
Level 2, Progr
: Tname is changedCreate or Replace Trigger TEA_TNAME_UPAfter--event is triggered beforeUpdate of Tname on teacher--action on the Tname column of the teacher table, or directly on the table, remove the row on the row directly on table--Do not write is statement-level, write for each row is row-levelBegin-what is triggered and doneSYS. Dbms_output. Put_Line (' tname is changed ');EndWhen updated: Update teacher Set tname = ' Pure rookie ' where tid=1;
return_expr2 whencomparison_exprn Then return_exprnELSE else_expr]
END
--Query the employee information for the department number 10,20,30, and if the department number is 10, print -1.1 times times its work, department 20th, 1.2 times times, 30th department, 1.3 times Times Select employee_id,last_name,department_id, case department_id when ten then salary*1.1 When salary*1.2 Else
then return_expr2When comparison_exprn then return_exprnELSE else_expr]
END
--Query the employee information for department number 10,20,30, and if the department number is 10, print--1.1 times times its work, department number 20th, 1.2 times times, 30th department, 1.3 times TimesSelect employee_id,last_name,department_id,Case DEPARTMENT_ID when ten then salary*1.1When salary*1.2else
how to use resources
When you are learning code or debugging code, you can consult a lot of materials: books, courses, tutorials, mentors, developer communities, etc.
The most common problem when you are learning these resources is that you do not fully understand what is happening behind the scenes or how the concept is integrated into a larger blueprint.
For example, if you spend 10 hours on a problem and someone finally provides a solution, you wi
As a programmer, do you know these top-level development communities ?, Top developer community
Summary: A good programmer has always chosen a good one instead of training the code with a strong head.Development CommunityShare experiences and promote each other with a group of like-minded people. Today, DevStore is planning to share 13 excellent development communities with you.
As a programmer, we need to
This article introduces the code-tuning method commonly used in the Java Web entry-level development; (Only for entry-level child boots Reference);Tools: Chrome Browser (the higher the version the better);Java Web Entry-level deve
Common page debugging methods for java web entry-level development, javaweb
Here we will introduce the common code adjustment methods in Java web entry-level development (for reference only );
Tool: chrome (the higher the version, the better );
Java web entry-
in the requirements will be GA,PU,UV analysis of the operations department! All data mining positions are written in the requirements only hadoop,spark,etl of the work of the Data Warehouse! Other self-view, data mining has several kinds of positions: Advertising CTR estimate, machine learning, referral system, natural language processing and so on. Choose it yourself. Anyway, getting started can be a try. In short, the entry is easy to go into diff
Java entry-level books
After the project has been completed in the past few days, I have been idle. I want to write code and entertain myself. By the way, I want to study the background.Java Definition
① Object: an object is an instance of a class and has statuses and behaviors. For example, a dog is an object in the following states: color, name, breed, and behavior: tail shaking, calling, and eating.Class
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