MySQL Trigger if then ElseIf else's useCREATE PROCEDURE DBName.Proc_getgrade(Stu_no varchar(20),Cour_no varchar(10)) BEGINDECLARE Stu_gradeFloat; SelectGradeIntoStu_gradeFromGradewhereStudent_no=Stu_noandCourse_no=Cour_no; IfStu_grade>=90 Then
From http://www.cnblogs.com/ggjucheng/archive/2012/12/16/2820834.html
English from http://docs.oracle.com/javase/tutorial/java/nutsandbolts/if.html
If-then statement
If-then statements are the most basic control flow statements. It
1, the input of the underlined "-" format is not correct, check whether it is full-width input, mistakenly entered the underscore "_", or there are spaces before and after;2. Do not refer to the EntityFramework command, please perform the following
Use of case, simple case functionA simple case expression that uses an expression to determine the return value.
Grammar:
Case Search_expression
When Expression1 THEN RESULT1
When Expression2 THEN result2
...
When Expressionn THEN Resultn
ELSE
Original source: http://zhuanlan.zhihu.com/wille/19763358Author: Han HaoKnow: HeinrichWeibo: @ Peanut oil workersA story that has nothing to do with timeI would like to dedicate this article to the Dalian Maritime University Wu Nan teacher, Liu
Principle AnalysisWhen a virtual function is called, the compiler-generated code calls a function such as the virtual table address [0] (param1, param2). The function name is not already being called.When we change the function implementation in the
What is traits? Why do people think of it as an important technology of C ++ generic programming?
In short, traits is so important because it allows the system to make decisions based on the Type during compilation,It is like making a decision based
The execution of the JavaScript scripting language needs to be triggered. The general practice is to write several functions directly in the Web page, some of which are processed by the browser when the code is loaded, or use code similar to the
Get permission $name can be a string or an array or a comma-delimited, UID is an authenticated user ID, $or is an or relationship, and true is, name is an array, as long as there is a condition passed through in the arrays, if false requires that
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