statements of case

IntroductionAs developers creating data-driven Web applications, we 've all written more than our fair share of SQL statements. if I had a nickel for every SELECT statement or UPDATE statement I 've written in my six years as a Web developer, I 'd

Use case statements in Shell programming, and use case statements in shell programming Hello everyone, today we bring you the use of Shell programming case statements! In fact, the case statement is quite understandable. In shell programming, the if

How to use case in SQL Case has two formats. Simple case function and case search function. Copy Code code as follows: --Simple Case function Case Sex When ' 1 ' THEN ' male ' When ' 2 ' THEN ' woman ' Else ' other '

Find slow SQL statements in MySQL and mysqlsql statements How can I find slow SQL statements in mysql? This may be a problem for many people. MySQL uses slow query logs to locate SQL statements with low execution efficiency. When the --

Program Flow At its simplest level, the Python interpreter operates in a similar manner, starting at the top of the program, and then executing the program statement sequentially, line by line. For example, listing 1 shows a few simple statements.

In the C ++ programming language, some judgment statements exist, such as the if and C ++ switch-case statements. In this article, we will introduce the basic usage of the C ++ switch-case statement in detail, hoping to help you. Detailed

　　 　　 Case has two formats. Simple Case functions and Case search functions.-- Simple Case FunctionCASE sexWHEN '1' THEN 'male'WHEN '2' THEN 'female'ELSE 'others' END-- Case search functionCase when sex = '1' THEN 'male'WHEN sex = '2' THEN

The IF statement has the following basic forms: I. If-then statement IfConditionThenStatement 1;...Statement N;End if; II. If-then-else statement IfConditionThenStatement 1;ElseStatement 2;End if; Iii. elslf statements IfCondition 1ThenStatement

ArticleDirectory Preface I. Four Basic SQL statements Ii. statement execution sequence 4. dynamic SQL statements Conclusion Preface I. Four Basic SQL statements Ii. statement execution sequence 4. dynamic SQL

---- Start You may be familiar with the if else statement, which is used to control the process. In the world of SQL, case statements have similar effects. The following describes the usage of the case statement. Consider the following situation.