Case has two formats. Simple case function and case search function.--Simple case function when ' 1 ' then ' Male ' when ' 2 ' then ' women ' else ' other ' end--case search function case when sex = ' 1 ' Then ' man ' when
In SQL, query conditions need to be divided into three types in the query optimization stage. The three types of conditions have different effects and can be converted to each other in some cases.First, describe the SQL statement execution steps,
Hello, C ++ (20). 4.2.2 represents the switch statement selected by the parallel condition: if ...... If ...... If ......,. 4.2.24.2.2 expression of the switch statement selected by the parallel condition: if ...... If ...... If ......
In the real
Introduction:
The related functions are as follows:1 int pthread_cond_init (pthread_cond_t * cond, pthread_condattr_t * cond_attr );2 int pthread_cond_wait (pthread_cond_t * cond, pthread_mutex_t * mutex );3 int pthread_cond_timewait (pthread_cond_t
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/@
SQL uses case when then multi-condition judgment
Case When condition 1 then result 1 When condition 2 then result 2 When Condition 3 then result 3 When condition 4 then result 4......... When condition n then result n Else result
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
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