order by case

Address: http://www.ibm.com/developerworks/cn/rational/r-usecase-atm/index.html Level: elementary Fu chunyi, technical sales manager of Rational China, software department of IBM China Co., Ltd. November 01, 2004 Use Case is a method used to

Case modeling GuideFu chunyi, technical sales manager of rational China, software department of IBM China Co., Ltd.November 01, 2004Original URL: http://www-128.ibm.com/developerworks/cn/rational/r-usecase-atm/@

Use case is a method used to describe system requirements. The process of describing system requirements using use cases is case modeling. The use case method was first proposed by Dr. IVA jackboson and was later integrated into the UML

Order-oriented production, production mode features, order-oriented Order-oriented MTO (Make-to-Order) refers to Order-oriented production. In order-oriented production, the product design has been completed, and the materials used for production

In some cases, MySQL can use an index to satisfy the order by clause without additional sorting. The where condition and order by condition use the same index, and the order by order is the same as the index order, and the order by field is both

Desc SELECT ActionId, UserID, CreateUser, ActionType, ActionName, Actioncomment, CreateDate, Pointsrulesid,reason, Objectid,byuserid,byusername,subjectid from Wikiuseractionlog Where createdate> ' 0001-01-01 00:00:00 ' and ActionType in (10,9,19,20)

byte order (byte order) and bit order (bit order)? In network programming, the network byte order and host order are often mentioned, that is, when an object consists of multiple bytes, it is necessary to pay attention to the order of the objects '

PrefaceIn addition to the regular join statements, there is a class of query statements that are also used more frequently, that is, orderby,group by and distinct. Considering that all three types of queries involve the sorting of data, I put them

/*Table Sysid Self-increment primary key SCRO score Oper operation time SCRO score > 5 According to the fractional descending, the score is less than or equal to 5 according to the operation time Ascending; >5 in front of the =5.*/select * FROM Test

There are two ways to solve this problem 1,where+group by (sort the group)2, the data returned from the form of the hands and feet (that is, subqueries)The solution by the Where+group byA function that sorts the groups in group by I only find Group_