case function

SelectCaseWhen a is isn't null then aWhen a B is isn't null then BWhen the c is isn't null then CWhen D was not null and then DElse 'END Column NameFrom Table Name Case has two formats. Simple case function and case search function.--Simple Case

Software Environment: Python 3.7.0B4I. Baseline conditions and recursive conditionsBecause the recursive function calls itself, writing such a function is prone to error, resulting in an infinite loop. For example:def Countdown (i): Print (i)

In JS, there are three main types of detection objects, typeof,instanceof,constructor, which can detect the type of objects, but there are some differences.1 use typeof to detect object types.Typeo, as the most commonly used method of detecting

CaseCalculates a list of conditions and returns one of several possible result expressions. Case has two formats: The simple case function compares an expression to a simple set of expressions to determine the result. The case search function

First, mathematical functionsABS (x)Returns the absolute value of XBIN (x) returns the binary of X (Oct returns octal, HEX returns hex)CEILING (x) returns the smallest integer value greater than x exp (x) return value E (base of natural logarithm) x

First, mathematical functionsABS (x) returns the absolute value of XBIN (x) returns the binary of X (Oct returns octal, HEX returns hex)CEILING (x) returns the smallest integer value greater than XEXP (x) return value E (base of natural logarithm) x

First, mathematical functionsABS (x) returns the absolute value of XBIN (x) returns the binary of X (Oct returns octal, HEX returns hex)CEILING (x) returns the smallest integer value greater than XEXP (x) return value E (base of natural logarithm) x

MySQL has 4 functions for conditional operation, which can implement the conditional logic of SQL, allowing the developer to transform some application business logic into the database background.MySQL Control flow function:Case When[test1] then

First, mathematical functionsABS (x) returns the absolute value of XBIN (x) returns the binary of X (Oct returns octal, HEX returns hex)CEILING (x) returns the smallest integer value greater than XEXP (x) return value E (base of natural logarithm) x

first, mathematical functionsABS (x) returns the absolute value of XBIN (x) returns the binary of X (Oct returns octal, HEX returns hex)CEILING (x)Returns the smallest integer value greater than XEXP (x) return value E (base of natural logarithm) x

First, mathematical functionsABS (x) returns the absolute value of XBIN (x) returns the binary of X (Oct returns octal, HEX returns hex)CEILING (x) returns the smallest integer value greater than XEXP (x) return value E (base of natural logarithm) x

In js, the function is capitalized as follows: {code ...} it can be called "Constructor". In a class, for example, (php) {code ...} __construct () is also called "constructor". What is the difference between the two types of construct () and

Cppunit is an open-source lgpl-based project. It was originally transplanted from JUnit and is an excellent open-source testing framework. Cppunit is the same as JUnit. Its main idea comes from xprogramming ). The main function is to manage unit

Use webbrowser to completely solve web printing problems (including background printing) How do we solve the problem of printing under the BS architecture? I recently worked on a project to take charge of this part, not only requiring printing

August 03, 2003 This article introduces the cppunit framework from the perspective of developers, hoping that developers can grasp this technology at the minimum cost as soon as possible. The following describes the basic principle, cppunit

ArticleDirectory Basic syntax Examples Coalesce and nullif Functions Conclusion The difference between the expression and the as expression after the case and the end is the most obvious -- Oracle Select

1. First introduce a WebBrowser on the page to be printed, you can directly add: Copy codeThe Code is as follows: To the page, or use JavaScript to temporarily add it as needed:Copy codeThe Code is as follows: document. body. insertAdjacentHTML ("

php7.1 new Features 1. Nullable (Nullable) type The type declaration of the parameter and the return value can be ? marked as empty (null) by adding a question mark () before the type name. Indicates that the type of the function parameter or return

Overview:The case statement in the SQL statement and the switch statement in the high-level language are standard SQL syntax, and are suitable for a condition that has multiple values to perform different operations, respectively.First, let's look

Sass BASICS (5)-Mr. Lemon @ If @ If is a SassScript that can process style Blocks Based on conditions. if the condition is true, a style block is returned. Otherwise False returns another style block. In Sass, in addition to @ if, @ else if and eles