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
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
If ... Then ... Else statementConditionally executes a set of statements based on the value of an expression.
If condition Then statements [Else elsestatements]
Or, use block-form syntax:
If condition Then[Statements][ElseIf condition-n
If statement a method that makes a variable or some other type of data to make a decision. For example, you may have a
Script to check if the Boolean value is True or FALSE, or the variable contains a number or string value.
Use the IF statement
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
(Hdu step 8.1.8) Team Queue (when a person queues, if there is a person he knows before, then he can directly rank behind the person he knows, or else he will be at the end of the Team. In this case), javaqueue
Question:
Team Queue
Tag: The code implementation has one fill highlight than the multi-label roundSometimes the programming for a long time, if you stop to think about it, even some of the most basic knowledge points, it may also make their own circle. In fact, at the
Case has two formats. Simple case function and case search function.--Simple Case functionCase SexWhen ' 1 ' Then ' men 'When ' 2 ' then ' women 'Else ' other ' END--case search functioncase If sex = ' 1 ' Then ' man 'When sex = ' 2 ' Then ' women
In the shell of Linux
The IF statement determines which branch to execute through the relational operator to determine the true or false of an expression. The Shell has three kinds of if ... else statements:
If ... fi statement;
if ... else .
Case has two formats. Simple case function and case search function.--Simple Case functionCase SexWhen ' 1 ' Then ' men 'When ' 2 ' then ' women 'Else ' other ' END--case search functioncase If sex = ' 1 ' Then ' man 'When sex = ' 2 ' Then ' women
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