關於 sql case else when ，我們在網路上蒐集到這些相關的討論、資訊與評價

#11. How to return alternate column value in SQL - YouTube

The SQL CASE StatementThe CASE statement goes through conditions and returns a value when the first condition is met (like an IF-THEN- ELSE ...

#12. SQL Server: CASE Statement - TechOnTheNet

Note · If no value/condition is found to be TRUE, then the CASE statement will return the value in the ELSE clause. · If the ELSE clause is omitted and no ...

#13. SQL CASE Statement: When and How To Use It - Devart

CASE must be followed by at least one WHEN... THEN expression · Every CASE statement must end with the END keyword · The ELSE argument is optional · CASE can be ...

#14. How to Use IF...THEN Logic in SQL Server | Tutorial by Chartio

This is most easily accomplished in all versions of SQL Server using the CASE statement, which acts as a logical IF...THEN...ELSE expression and returns ...

#15. SQL CASE - javatpoint

The CASE is a statement that operates if-then-else type of logical queries. This statement returns the value when the specified condition evaluates to True.

#16. The SQL Procedure : CASE expression - SAS OnlineDoc, V8

If every when-condition is false, PROC SQL executes the ELSE expression, and its result becomes the CASE expression's result. If no ELSE expression is ...

#17. CASE expression - IBM

If no case evaluates to true and the ELSE keyword is not present then the result is NULL. Note that when a case evaluates to unknown (because of NULLs), the ...

#18. How to Use the SQL CASE Statement – with Example Challenge

Writing SQL with multiple conditions can be an arduous task, especially if you need to make numerous checks. For example, an if () else if ...

#19. 15.10 - Simple CASE Statement - Teradata Database

In this form of the conditional statement, you can execute a list of SQL statements, including control statements, associated with at most one WHEN clause ...

#20. CASE Expressions - Vertica

If the ELSE clause is omitted and no condition matches, the result is NULL. Syntax (form 2). CASE expression WHEN value THEN result [ WHEN value ...

#21. ms sql case when 運算問題 - iT 邦幫忙

我用MS SQL 語法如下. 得到結果成功率是0. 想請問有何解決辦法呢? 謝謝 select 生產線,case when text=OK then 1 else 0 end OK數量,case when text=NG then 1 else 0 ...

#22. How to Use CASE in ORDER BY in SQL - LearnSQL.com

This article will show you how and when to use CASE in an ORDER BY clause. Have you ever used a CASE statement? I'm sure you have, ...

#23. SQL CASE works in practically all SQL-Databases

SQL offers two case abbreviations to cope with null : coalesce and nullif . Both are used like functions and do not use the keywords case , when , then , else ...

#24. How To Use CASE Expressions in SQL - DigitalOcean

In this tutorial, you'll learn how to use the CASE expression to set conditions on your data using WHEN , THEN , ELSE , and END keywords.

#25. 9.18. 條件表示式 - PostgreSQL 正體中文使用手冊

9.18.1. CASE. SQL 中的CASE 表示式是一種通用的條件表示式，類似於其他程序語言中的if / else 語句：. CASE WHEN condition THEN result. [WHEN ...] [ELSE result].

#26. SQL CASE Expression - TIBCO Product Documentation

You can use CASE expressions in the select list of SELECT statements. A CASE expression is used like an if-then-else construct to conditionally return a ...

#27. Sql Case Statement With Code Examples

Hello everyone, in this post we will look at how to solve the Sql Case Statement problem in the programming language. SELECT customer_id, first_name, CASE WHEN ...

#28. CASE expression - Amazon Redshift - AWS Documentation

Specifies a result when there are multiple conditions. CASE is a conditional expression similar to if/then/else statements found in other languages.

#29. CASE Clause - Spark 3.3.1 Documentation

CASE clause uses a rule to return a specific result based on the specified condition, similar to if/else statements in other programming languages.

#30. SQL CASE Statement (With Examples) - Programiz

In this tutorial, we'll learn about the CASE statement in SQL and how to use them with ... The ELSE clause is executed if none of the conditions in the CASE ...

#31. How CASE WHEN Works - The Data School

CASE WHEN takes in values, checks them against a condition and THEN outputs values into a new column based on if it satisfies the condition. CASE WHEN in SQL ...

#32. Understanding the SQL CASE Statement and its many uses

If none of the conditions are satisfied, we can use an optional ELSE statement to return the default value. For example, if we have a value ...

#33. SQLite CASE Expression: Simple CASE & Search CASE

The CASE expression is similar to the IF-THEN-ELSE statement in other ... learned about SQLite CASE expression to form conditional logic inside a SQL query.

#34. Case Statement using SQL (examples included) - Data to Fish

Here are 3 different ways to apply a case statement using SQL: (1) For a single condition: CASE WHEN condition_1 THEN result_1 ELSE result_2 ...

#35. Using Oracle CASE Expression By Practical Examples

Oracle CASE expression allows you to add if-else logic to SQL statements without having to call a procedure. The CASE expression evaluates a list of conditions ...

#36. CASE Statement in SQL Examples

The CASE expression is used to build IF … THEN … ELSE statements into your Microsoft SQL Server T-SQL code. CASE is used within a SQL statement, ...

#37. CASE WHEN (IF..ELSE) – Documentation and Support - Knowi

CASE WHEN (IF..ELSE) · CASE WHEN statements provide great flexibility when dealing with buckets of results or when you need to find a way to filter out certain ...

#38. PostgreSQL CASE

The PostgreSQL CASE expression is the same as IF/ELSE statement in other programming languages. It allows you to add if-else logic to the query to form a ...

#39. [SQL] CASE 條件式用法@ XiaoLian :: 隨意窩Xuite日誌

語法: Case when 欄位=值1 then 文字1 when 欄位=值2 then 文字2 else null End Ex:SELECT T0.[U_EmpID], T0.[firstName],Case when T0.Sex='F' then '女' when T0.

#40. CASE - Snowflake Documentation

Works like a cascading “if-then-else” statement. In the more general form, a series of conditions are evaluated in sequence. When a condition evaluates to TRUE, ...

#41. Oracle CASE statement - Oracle Help Center

沒有這個頁面的資訊。

#42. SQL CASE Statement Explained with Examples - Database Star

The CASE statement allows you to perform an IF-THEN-ELSE check within an SQL statement. It's good for displaying a value in the SELECT query ...

#43. SA0182 : The CASE expressions is missing ELSE clause

The rule does not need Analysis Context or SQL Connection. Effort To Fix. 5 minutes per issue. Categories. Design Rules, Code Smells.

#44. SQL Case Statement — Conditions in SQL | Code Storm

So, once a condition is true, it will stop reading and return the result. If no conditions are true, it returns the value in the ELSE clause ...

#45. CASE expressions - Sybase Infocenter

The CASE expression provides conditional SQL expressions. ... Otherwise, the expression following the ELSE statement is returned, if it exists.

#46. SQL CASE Function | BigQuery Syntax and Examples - Count

How to create multiple 'THEN' clauses for a case statement? To add multiple expression -> result pairings, simply add another WHEN ... THEN clause (without ...

#47. SAP Business One – Using CASE in SAP B1 SQL – Top Ten ...

I have a Word Document, about 8 pages long, with various CASEs used while writing SQL. Very handy when writing any kind of report for the End ...

#48. CASE construct - Firebird

If there is no match and no ELSE clause, NULL is returned. The match is determined with the “=” operator, so if <expression> is NULL , it won't ...

#49. CASE Statement - MariaDB Knowledge Base

If a search_condition evaluates to true, the corresponding SQL statement list is executed. If no search condition matches, the statement list in the ELSE clause ...

#50. CASE Statements and Expressions - Oracle PL/SQL ... - O'Reilly

The ELSE portion of the statement is optional. When evaluating such a CASE statement, PL/SQL first evaluates expression. It then compares the result of ...

#51. SQL语句case when中else的添加与否的区别 - CSDN博客

（1）如下SQL语句，有elseselect case satisfaction WHEN 1 THEN '满意' WHEN 2 THEN '不满意' ELSE '无' ENDas satisfaction_namefrom table查询 ...

#52. case expression | Databricks on AWS

Learn the syntax of the case function of the SQL language in ... WHEN 2 > 0 THEN 2.0 ELSE 1.2 END; 2.0 > SELECT CASE WHEN 1 < 0 THEN 1 WHEN ...

#53. SQL CASE

SQL CASE. Dans le langage SQL, la commande “CASE … WHEN …” permet d'utiliser des conditions de type “si / sinon” (cf. if / else) similaire à un langage de ...

#54. CASE Statements in PostgreSQL - DataCamp

Expand your conditional queries in PostgreSQL using CASE statements and conditional expressions. Follow examples using WHEN-THEN, if-else, & switch today!

#55. CASE | Exasol DB Documentation

Learn about the CASE function provided by Exasol. ... With the help of the CASE function, an IF THEN ELSE logic can be expressed within the SQL language.

#56. What is a CASE Statement in the SQL? - JanBask Training

What is SQL Case Statement? SQL Server Case When Null & SQL Server Case Sensitive What is the SQL Case Statement?

#57. Db2 CASE Expressions: Adding If-Else Logic to Queries in Db2

A CASE expression allows you to select an expression based on evaluation of one or more conditions. In other words, it allows you to add the if-else logic to ...

#58. SQL Case Statement Explained [Practical Examples]

The CASE statement in SQL comes in handy when you want to implement IF-THEN logic in SQL Server. The CASE statement checks conditions and returns a value ...

#59. Oracle CASE SQL statement - Burleson Consulting

else v_status := 'very large' end case;. Oracle SQL allows you to add "Boolean logic" and branching using the decode and CASE clauses. The case statement is ...

#60. CASE - Dremio docs

CASE expression WHEN condition THEN result [ …n ] [ ELSE result ] END → same as input type. expression: A valid SQL expression, typically, a column name.

#61. Conditional Processing using the Case Expression in PROC ...

For many users already familiar with the DATA step, conditional logic scenarios are frequently implemented using IF-THEN / ELSE and SELECT statements. The SQL ...

#62. The SQL CASE WHEN Statement - Complete Guide

In this article, you will find various use cases of the SQL CASE expression statement and learn how to implement them with Multiple WHEN ...

#63. SQL Server CASE Expression - Database.Guide

In SQL Server, the T-SQL CASE expression is a scalar expression that ... ELSE is a control-of-flow language keyword, whereas CASE is not.

#64. Case Statement - DuckDB

The basic form is identical to the ternary condition used in many programming languages ( CASE WHEN cond THEN a ELSE b END is equivalent to cond ? a : b ). -- ...

#65. Documentation: 15: 9.18. Conditional Expressions - PostgreSQL

The SQL CASE expression is a generic conditional expression, similar to if/else statements in other programming languages: CASE WHEN condition THEN result ...

#66. CASE | Caché SQL Reference - InterSystems Documentation

[ ELSE value_expression ] END CASE value_expression WHEN value_expression ... value_expression, An SQL expression (such as a literal value or field name.) ...

#67. CASE condition & value matching in SELECT Query - Plus2net

CASE query with WHEN & THEN for execution of statement matching to data or condition. ... CASE WHERE ELSE Sql There are two different types of CASE quires.

#68. Case when and else : Case « Select Query « SQL Server / T ...

Case when and else : Case « Select Query « SQL Server / T-SQL.

#69. CASE - the Advantage Developer Zone

ELSE logic in SQL statements. CASE has two formats: The simple CASE function compares an expression to a set of simple expressions to determine the result.

#70. CASE (expression)

If a value expression evaluates to TRUE, CASE returns the value expression for the THEN clause. •Searched When/Then. This format evaluates a set of Boolean ...

#71. How to Write a Case Statement in SQL Server - PopSQL

Case statements are useful when you're reaching for an if statement in your selectclause. select.

#72. The Ultimate Guide To SQL CASE Expression - SQL Tutorial

This tutorial shows you how to use two forms of SQL CASE: simple CASE and searched CASE expressions to add the IF THEN ELSE logic to SQL statements.

#73. CASE Expressions And Statements in Oracle

The CASE expression was first added to SQL in Oracle 8i. ... The optional ELSE clause allows you to deal with situations where a match is not found.

#74. SQL CASE - Dofactory

SQL Server CASE -- the best examples. A CASE expression handles conditional logic inside a query. Comprehensive logic can be built with CASE, WHEN, THEN, ...

#75. CASE in SAP HANA - Control flow for SQLScript ...

Use CASE in SAP HANA to map the IF - THEN - ELSE logic in your SQL statements with CASE When statements.

#76. The CASE expression - jOOQ

The CASE expression is part of the standard SQL syntax. ... FIRST_NAME = 'George' THEN 'english' ELSE 'unknown' END, -- Simple case CASE AUTHOR.

#77. DB2 - SQL Case Statement - DB2 Tutorial - IBMMainframer

The CASE statement goes through conditions and returns a value when the first condition is met (like an COBOL Evaluate statement). So, If a condition is true, ...

#78. How to use a CASE statement in SQL - Naukri Learning

SQL CASE statement is similar to the IF-THEN-ELSE statement of any other programming language that returns the result after evaluating ...

#79. How to Use a CASE WHEN Statement in SAS (With Examples)

This statement uses the following basic syntax: proc sql; select var1, case when var2 = 'A' then 'North' ...

#80. MySQL CASE：SQL 語法的switch 和if-else - Tsung's Blog

MySQL CASE：SQL 語法的switch 和if-else. SQL 語法想要做switch / if-else 可以使用CASE 來達成. SWITCH 語法. CASE colname WHEN 'condition string' ...

#81. How to use CASE for flow control in SQL statements

The SQL CASE statement is used for flow control, much like an if, then, else statement. If the statement finds a match on the chosen ...

#82. Can you use the field value as the else in a CASE? (Community)

No, not in the Looker Case-When statement! However, you can accomplish this in the sql parameter with a CASE WHEN statement. Example: dimension: ...

#83. Understanding SQL Server Case Expression with Example

This expression allows comparison operators, and logical operators AND/OR with in each Boolean expression. Syntax. CASE WHEN Boolean_expression1 ...

#84. sql server - Case with multiple conditions

,CASE WHEN i.DocValue ='F2' AND c.CondCode IN ('ZPR0','ZT10','Z305') THEN c.CondVal ELSE 0 END as Value. There are two types of CASE ...

#85. [T-SQL] IIF 與CASE WHEN … THEN … ELSE … END - 鄭子璉

[T-SQL] IIF 與CASE WHEN … THEN … ELSE … END. 有個案子現場是前面的人做的，因為距離關係，分了三區設置4G 網路，把資料扔回Server 。

#86. What happens when you write a CASE statement without an ...

You won't regret explicitly returning NULL in your ELSE case. ... r/SQL - Looking for suggestions on how to write a query to get this.

#87. A Case Statement in a SQL Join. A Nifty Trick | by Joseph Burton

When joining two or more tables, sometimes you end up in a scenario where values you are joining on just don't quite match up. There are plenty ...

#88. 9. Learn SQL CASE - QueryPie

#Table of Contents. Query 1. #CASE. SELECT customer_id, active, CASE WHEN active= ...

#89. CASE - InterBase - Embarcadero DocWiki

The CASE function allows you to evaluate a column value on a row against ... upgrade' THEN 'Universal Language Translator' ELSE 'Other' END AS project FROM ...

#90. PL/SQL - CASE Statement - Tutorialspoint

PL/SQL - CASE Statement, Like the IF statement, the CASE statement selects one sequence of statements to execute. ... ELSE Sn; -- default case END CASE; ...

#91. SQL CASE Statement - Simple and Searched Forms

The ELSE statement is optional in a CASE expression. It returns “otherResult” when no matches are made and ELSE is present.

#92. How to Use SQL CASE for Conditional Logic in ... - DBA Diaries

SELECT ID, Breed, Value CASE WHEN ID <= 5 THEN 'Dog' ELSE 'Cat' END AS Animal FROM Breeds;. The test against the ID column produces a Boolean ...

#93. CASE - SingleStore Documentation

ELSE defaultval END) ... Arguments. Any SQL objects ... SELECT ( CASE WHEN 1=0 THEN 3 WHEN 0=1 THEN 5 ELSE 8 END) AS 'Choices';.

#94. CASE statement in SQL Queries with Examples - Tech Agilist

SQL CASE statement allows you to perform IF-THEN-ELSE functionality within an SQL statement. CASE SQL expression can help make your data ...

#95. SQL~~CASE, NULLIF() and ISNULL() - 石頭閒語

此時，我們需要先將outer join 後的結果，利用CASE 敘述加以修飾，將NULL 改為有意義的0 或空字串，以便後續運算。 case when 欄位is NULL then 設計人員 ...

#96. SQL CASE Statement - TutorialsCampus

CASE statement is used to check multiple conditions and returns corresponding values to that condition in result set when the condition became true.

#97. SQL msSQL Case When Then 函式- HackMD

SQL msSQL Case When Then 函式---- ###### tags: `SQL` [CASE 關鍵字(SQL CASE Keyword)](https://www.foo.