/1.1Accept: */*referer:http://localhost/Accept-language:zh-cnAccept-encoding:gzip, deflateuser-agent:mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon;. NET CLR 1.1.4322)Host:localhostConnection:keep-aliveReference: The original post is published by "Server First return":http/1.1 OKDate:fri, 2005 07:44:22 GMTserver:apache/2.0.54 (Win32) svn/1.2.1 php/5.0.4 DAV/2x-powered-by:php/5.0.4SET-COOKIE:PHPSESSID=BMMC3MFC94NCDR15UJITJOGMA3; path=/Expires:thu,
. Thereafter, NN researches would is dormant up until 1980sXOR problem which is nor linearly seperable data orientationThere had been not to much effort until the intuition of multi-layer Perceptron (MLP) is suggested byWerbos [6] in 1981 with NN specific backpropagation (BP) algorithm, albeit BP idea had been proposed before by Linnainmaa [5] in 1970 in the name "reverse mode of automatic differentiation". Still BP is the key ingredient of today ' s
Cacheheader ("Cache-control:no-store"); No Cacheheader ("cache-control:private"); No Cacheheader ("cache-control:max-age=10"); Cache 10ssetcookie (' Hello ', "testaaaa"); No cacheNote that there is a pit when using the session, you can use the following to setSession_cache_limiter ("none"); Session_Start (); Echo Date ("Y-m-d h:i:s", Time ());Can look at the PHP source code header information expires, etc.EXT/SESSION/SESSION.C line:1190//... Cache_limiter_func (Private)/* {{{*/{add_header ("
:25 gmtcontent-type:text/htmlconnection:keep-alivevary: accept-encodingx-powered-by:php/5.3.29p3p:cp= "CURa ADMa DEVa Psao psdo our BUS UNI PUR INT DEM STA PRE COM NAV OTC NOI D SP COR "SET-COOKIE:APE__SESSION=K44G3EKLSERT1FGBJHL061L4F4; path=/; Domain=.apelearn.comexpires:thu, 1981 08:52:00 Gmtcache-control:no-store, No-cache, Must-revalidate, Post-check =0, Pre-check=0pragma:no-cache [[email protected] vhost]# Curl Ask.apelearn.com-i//Direct Connect
#) from SC Group by C #;
27. Query the student number and name of all the students who took only one course
Select SC. S#,student.sname,count (C #) as selected number of courses
From SC, Student
where SC. s#=student.s# GROUP by SC. s#, Student.sname having Count (C #) = 1;
28, inquires the number of boys and girls
Select count (ssex) as the number of boys from the Student group by the ssex having ssex= ' male ';
Select count (ssex) as the number of girls from the Student group by the Ssex having
and Machi Ne Intelligence, 3 (1): 20-29, 1981.[One] K.J Overton and T.E Weymouth, "A Noise reducing Preprocessing algorithm", Proceedings of the IEEE Computer science C Onference on recognition and Image processing, pages 498-507, Chicago, IL, 1979.[P. Perona and J. Malik, "scale-space and edge detection using anisotropic diffusion", IEEE transactions on Alysis and Machine Intelligence, 12 (7): 629-639, 1990.[G] G. Ramponi, "A rational edge-preservin
Language master Anders Hejlsberg Introduction
1.Anders picture
Anders Hejlsberg, a Danish who studied engineering at the Danish University of Science and Technology. 1981 years ago, Anders Hejlsberg A company in Denmark called Poly Data, he wrote the Pascal compiler core, originally called Compass Pascal, later called Poly Pascal. In
For example, the following ...1, For Date field fieldsAccess is represented as: #1981 -28-12#SQLSERVER2000 says: ' 1981-02-12 '2,sql statement Difference, select, update is similar to a single table operation,However, the difference between an UPDATE statement in a multiple-table operation and access is in contrast to the UPDATE statement in SQL Server:Update statements for multiple tables are updated in SQ
Show all employee names in lowercase to show the names of all employees in uppercase format. Displays the name of the employee who is exactly 5 characters. Displays the first three characters of all employee names. Displays the names of all employees in uppercase letters, followed by lowercase. Displays all employee names in uppercase after the first letter lowercase. Show the names of all employees, replace all "a" with "I am the tiger" Find the name and date of the employee who has been recrui
There are often problems with database upsizing during software development, such as acsess access is slower than SQL Server, Access leaves space after data logging is deleted, files become larger (and can be reduced in a compact fix, but too cumbersome), and access is slower and faster. Even the database is damaged, the lighter damage can be found by Third-party tools to repair, it will cause the database can not be repaired, or after the repair of data records will be damaged. So it's importan
--Query the top three of the highest salary (the feeling of paging)SELECT * FROM(SELECT * from emp ORDER BY sal Desc) twhere RowNum --Query for 4 to 6 of the highest wages (page-by-row number selection three steps)SELECT *From (select T.*,rownum rn from (SELECT * from emp ORDER BY sal Desc) t) m where M.rn >= 4 and M.rnSELECT *From (select T.*,rownum rn from (SELECT * from emp ORDER BY sal Desc) t) m where m.rn between 4 and 6 Select * from (select E.*,row_number () over (order by e.sal DESC)
: Notfound2, Variable: (*) initial value (*) how the final The number of people who get into the year count80 numbers: = 0;count81 #: = 0;count82 #: = 0;count87 #: = 0;*/declare--Define cursor cursors Cemp is select To_char (hiredate, ' yyyy ') from EMP; Phiredate VARCHAR2 (4); --Number of count80 numbers per year: = 0; Count81 number: = 0; count82 number: = 0; count87 Number: = 0;begin--Opens the cursor open cemp; Loop-Take the entry year of an employee fetch cemp into phiredate;
' 4 Else '' End asSal_level5, Case whenT.sal>= the Then '[' 6 whenT.sal>=2500 Then '[2500-3000' 7 whenT.sal>= the Then '[1500-2500' 8 Else '' End assal_level_test9 fromEMP T; EMPNO ename JOB MGR hiredate SAL COMM DEPTNO sal_level sal_level_test----- ---------- --------- ----- ----------- --------- --------- ------ ---------- -------------- 7369SMITH Clerk7902 1980/ A/ - 800.00 - the the
3000 20
Sql> SELECT * from emp where hiredate= ' 1981-12-03 ';
SELECT * from emp where hiredate= ' 1981-12-03 ' * 1th line error: ORA-01861: text does not match format stringIv. use of escape charactersFor example: Want to blur query name with _ in the pe
tracked table with a "CT" suffix. After executing the above section of T-SQL, one of the following system tables is created, and we find that the three fields of the users table are also in the table. In addition The table also has 5 additional fields: __$start_lsn, __$end_lsn, __$seqval, __$operation, and __$update_mask, which represent the Log series number (log Sequence numbers), OPERATIONS (delete, INSERT, Pre-and post-modification) information.Iv. Record data changes for added recordsNow w
departmentCopy the average salary from the last sentence of the query Department to the main query column. It's all right.Sql> SelectEmpno,ename, Sal, (Select avg(SAL) fromEmpwhereDeptno=e.deptno) Avgsal fromEMP EwhereE.sal>(Select avg(SAL) fromEmpwhereDeptno=E.deptno); EMPNO ename SAL avgsal---------- ---------- ---------- ---------- 7499ALLEN the 1566.66667 7566JONES2975 2175 7698BLAKE2850 1566.66667 7788SCOTT the 2175 7839KING the 2916.66667 7902FORD
' | |
PSAL);
End Loop;
Close Cemp;
End /
--Query the employee name of a department
set serveroutput on
declare
cursor Cemp (DNO number) was select ename from EMP where deptno=dno; /* SQL statement Select TO_CHAR (hiredate, ' YYYY ') from EMP-------------Exit condition Variable: count80 number: = 0;
Count81 number: = 0;
count82 number: = 0;
count87 number: = 0;
*/SET SERVEROUTPUT on DECLARE cursor cemp are select To_char (hiredate, ' YYYY ') from EMP;
Phiredate VARCHAR2 (4)
session has changed.Sql> select Sysdate from dual;Sysdate------------------May 30, 2001 CE2. Display of date typesSelect Sysdate,to_char (sysdate, ' yyyy.mm.dd hh24:mi;ss ') from dual;Sql> Connect Scott/tigeris connected.Sql> alter session Set Nls_date_format = ' yyyy ' year "MM" month "DD" "Day";The session has changed.Sql> Col hiredate heading BirthdaySql> Col sal heading Wagessql> Col Sal ename NameSql> select Ename,sal,hiredate from emp;Name Salary Birthday---------- ---------- ------------
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