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Label:1. Row to column: First, the initial data: Data after conversion: Second, the conversion of the statement: --statistics on the number of staff in various positions in various departments:SELECT T.job, SUM (DECODE (t.job, ' clerk ', 1, NULL)) as COUNT1, SUM (DECODE (T.job, ' salesman ', 1, NULL)) as COUNT2, SUM (DECODE (t.job, ' president ', 1, NULL)) as COUNT3, SUM (DECODE (t.job, ' MANAGER ', 1, NULL)) as COUNT4, SUM (DECODE (t.job, ' ANALYST ', 1, NULL)) as COUNT5From EMP TGROUP by T.j

select * FROM Dbo.pvtcustorders 3 Select Custid,years,qty 4 from Dbo.pvtcustorders 5 Unpivot (Qty for years in ([2002],[2003],[2004])) as up 6 GO 7--A dynamic scenario for a career change: Unpivot, Sql2005 and later version 8-because the line is dynamic so here is the information_schema. The columns view gets the columns to construct the rows, and the XML processing is also used. 9 DECLARE @SQL NVARCHAR (4000) =n "; The SET @SQL =stuff ((SELECT N ', ' +quotename (column_name) from INFORM

ORDER BY User_name,courseYou can also make use of the insert all into ... Select to first build a table test_tb_grade3:SQL code:1 CREATE TABLE Test_tb_grade32 (3 user_name VARCHAR2 (CHAR),4 COURSE VARCHAR2 (CHAR),5 Score FLOAT6)Then execute the following sql:SQL code:1 Insert All2 into Test_tb_grade3 (User_name,course,score) VALUES (user_name, ' languages ', Cn_score)3 into Test_tb_grade3 (User_name,course,score) VALUES (user_name, ' math ', Math_score)4 into Test_tb_grade3 (User_name,course,sc

The main idea, give the N nodes, M-edge, each edge of the weight of the line from the edge of the police are not caught by the probability, asked from Node A to Node B is not caught the maximum probability. Floyd deformation, simply change the

People of different ages may have different feelings and ideas. Some people suddenly find themselves confused about their future and do not know what to do in the future. Some people want to go abroad with gold plating, improve their own quality,

1, I am 23 years old this year. 2, just engaged in PHP, know the work experience of predecessors can let me go a lot less detours, sincere advice. Reply content:Don't quite agree upstairs to answer anonymously. The improvement of technology is the

A prestigious international ComputerWorld (Domestic " The American original of Computer World) was written by a woman journalist two days ago. "Thetop10dead (ordying) Computerskills" (Ten dead and dying it technologies and occupations) a

I have entered the programming industry for more than 2 years. Sometimes I feel like I'm not very good at being a programmer. 1, find yourself learning new things a little passive 2, learn new things when they feel a little slow, not quickly start

September 8, Tuesday, on a day class, there are four days class, not counted overtime, think about the heart tired, you oscer you okay?@ Bear two : One day a programmer saw God. God: Lad, I can satisfy you with a wish. Programmer: I hope the Chinese

Relative to the elementary level that is constantly on the road of developmentCIO (Chief Information Officer)Or quasiCIOThose who have passed the initial career period and entered the career PeriodCIO --Let's call it the postCIOPerson. AfterCIOMost

"At the age of 35, your technical career is over ." This statement has been recognized by many people in the IT industry, and many IT people worry about their future. In fact, from another perspective, the end of a technical career means the

In recent years, the talent market in China has been oversupply, and the employment of college students has become a common concern in the society. Some people joked that "Graduation is equal to unemployment ". For this phenomenon, the most

Question: At present many young people are under the pressure of life, feel that their wages to make ends meet, looking at the side to do it's friends income all over million, even if the programmer is to eat "youth rice", but also want to go to do

Dallas 7521 ward salesman 1250.00 30 sales Chicago 7844 Turner salesman 1500.00 30 sales Chicago 7499 Allen salesman 1600.00 30 sales Chicago 7900 James Clerk 950.00 30 sales Chicago 7698 Blake manager 2850.00 30 sales Chicago 7654 Martin salesman 1250.00 30 sale

want to explore and discover high-paying financial technology careers, and they don't even have to leave their homes or offices. The summit is expected to see a large number of job seekers looking for jobs in the changing financial technology sector. In addition to potential job seekers, the summit will also attract a large number of hiring managers, influential celebrities, corporate executives and others in the block-chain service sector. Parti

db_recovery_file_dest= '/oracle/app/oracle/oradata/'#SET sga_max_size 200M#SET Sga_target 185MNofilenamecheck;}These storage directories: Flash back directory, ADR directory, audit log directory, oracle-managed data file directory and so on, must pay attention to AH------------here to explain the principle of initializing the repository with the above command, using the date output of the class above command execution:$rman target Sys/[email protected] auxiliary sys/[email protected]Connected t

/oradata /'SET LOG_FILE_NAME_CONVERT '/u01/app/ora11/oradata/ORA11G/onlinelog/', '/oracle/app/oracle/oradata /'Set db_create_file_dest = '/oracle/app/oracle/oradata /'Set db_recovery_file_dest = '/oracle/app/oracle/oradata /'# SET SGA_MAX_SIZE 200 M# SET SGA_TARGET 185 MNOFILENAMECHECK;} Note the following storage directories: the flashback directory, the adr Directory, the audit log directory, and the Oracle-managed data file directory. ------------ Here I will explain the daily output after t

Problem: Merging many small strings into one large stringSolution:1, for a small number of strings: +2. A more efficient way to connect to a large number of String objects: Join ()3. More complex Strings: Format ()>>> parts=[' is','Chicago',' not','Chicago?']>>>','. Join (Parts)'Is,chicago,not,chicago?'>>> a='is

The Business social Networking LinkedIn (linkedin.com) may be a bit tedious compared to Facebook and Twitter, but the site has been extremely successful in providing information to employers and finding better jobs for their employees. However, it has also been noted that LinkedIn is indifferent and unresponsive to the trend of the Internet. The following is the full text of the article: Boring but practical. For some, LinkedIn is the dullest Web site since watching-grass-grow.com (meaning: Watc

Hint related to the table connection method1, Use_mergeUse_merge is a hint for multiple target tables, and it means that the optimizer will concatenate multiple tables that we specify as the driven table with other tables or result sets. The target table specified in Use_merge hint should be the driven table of the sort merge connection, and if the specified table is not a driven table for the sort merge connection, then Oracle either ignores the hint or ignores the table.The format is as follow