關於 sql case ，我們在網路上蒐集到這些相關的討論、資訊與評價

#11. SQL CASE | Intermediate SQL - Mode Analytics

The CASE statement is SQL's way of handling if/then logic. The CASE statement is followed by at least one pair of WHEN and THEN statements—SQL's equivalent ...

#12. PL/SQL CASE語句 - 極客書

像IF語句中，CASE語句選擇要執行的語句一個序列。但是選擇順序，CASE語句使用一個選擇而不是多個布爾表達式。 ... 流程圖：. case statement in PL/SQL ...

#13. [T-SQL] CASE語法| Dorlis's 技術記錄 - 點部落

摘要:[T-SQL] CASE語法. 1. 單一值的比對. 在case中的p.counter_name會與when裡的值作比對，若相同則將then之後的值傳回；.

#14. CASE語法介紹 - Oracle SQL學習筆記本

CASE 語法等同於在SQL語法加上if子句,寫入你想要的判斷轉換資料數值,功能跟DECODE一樣,在閱讀上,CASE語法可讀性較高,建議使用CASE語法. CASE格式. CASE [expr].

#15. OR is not supported with CASE Statement in SQL Server

That format requires you to use either: CASE ebv.db_no WHEN 22978 THEN 'WECS 9500' WHEN 23218 THEN 'WECS 9500' WHEN 23219 THEN 'WECS 9500' ELSE 'WECS 9520' ...

#16. CASE statement in SQL procedures - IBM

CASE statement in SQL procedures. CASE statements can be used to conditionally enter into some logic based on the status of a condition being satisfied.

#17. SQL CASE works in practically all SQL-Databases - Modern ...

SQL CASE changes the result based on conditions. CASE works in MySQL, PostgreSQL, Oracle, SQL Server, DB2…

#18. SQL高級知識——CASE的用法 - 每日頭條

ELSE value END示例CASE sex WHEN '1' THEN '男' WHEN '2' THEN '女' ELSE '其他' END CASE搜索函數語法CASE WHEN [, ] THEN value WHEN <c.

#19. Oracle SQL CASE COMPLEX複雜用法教學 - 程式開發學習之路

Oracle SQL CASE COMPLEX複雜用法教學使用工具sqldeveloper 請先參考sqldeveloper下載及安裝及連線測試資料來源請先參考Oracle DB 目錄.

#20. CASE - Snowflake Documentation

In the second, “shorthand” form, the expression after CASE is compared to each of the WHEN expressions in sequence, until one matches; then the associated ...

#21. Conditional expressions in Standard SQL | BigQuery - Google ...

CASE expr. WHEN expr_to_match THEN result [ ... ] [ ELSE else_result ] END. Description. Compares expr to expr_to_match of each successive ...

#22. 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：. 1. CASE WHEN condition THEN result.

#23. SQL Server T-SQL CASE Statement Examples - MS SQL Tips

This tip will teach you when and how you can use CASE in T-SQL statements with several code examples to give you a better understanding.

#24. [SQL Server] 條件判斷式Case When Then 的用法 - 黑白倫的日誌

Case When Then 可以說是SQL的 IF 判斷式. 大致上語法如下. Select Case (要判斷的欄位) ... Select 水果, (Case 水果 When '香蕉' Then 價格+10

#25. CASE statement in SQL - SQLShack

The case statement in SQL returns a value on a specified condition. We can use a Case statement in select queries along with Where, Order By ...

#26. SQL Case when 的使用方法 - 简书

SQL Case when 的使用方法 ... 简单Case函数的写法相对比较简洁，但是和Case搜索函数相比，功能方面会有些限制，比如写 ... 二，用一个SQL语句完成不同条件的分组。

#27. SQL Server: CASE Statement - TechOnTheNet

In SQL Server (Transact-SQL), the CASE statement has the functionality of an IF-THEN-ELSE statement. You can use the CASE statement within a SQL statement.

#28. 【SQL學習筆記4】case when 和if的用法

【SQL學習筆記4】case when 和if的用法. ... 用法一： case when 條件1 then 欄位取值1 when 條件2 then 欄位取值2 when 條件3 then 欄位取值3 else ...

#29. SQL 查询：SELECT CASE 条件赋值 - 盖若

SQL 查询：SELECT CASE 条件赋值. 更新时间：2021-06-26 10:04:18 标签： sql case. 好消息！ 本教程作者所著新书《深入浅出Pandas：利用Python进行数据处理与 ...

#30. MS SQL Server CASE 運算式example - 推理文by阿誠

下列範例利用CASE 運算式來變更產品線類別目錄的顯示方式，使它們更容易了解。 SQL USE AdventureWorks2008R2; GO SELECT ProductNumber, Category =

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

A CASE statement in SQL Server evaluates an expression and returns a value based on the defined conditions. Therefore, in the earlier example, ...

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

這是關於SQL 中的CASE 敘述的另一篇應用文章。前一篇為「SQL::使用CASE 修飾資料內容，以便進行group 操作」。 重點為：一、處理無意義的NULL ；二、 ...

#33. Oracle基本修練: PL/SQL if-else, case statements - Medium

本篇記錄PL/SQL條件控制的主要寫法，並以範例練習。. “Oracle基本修練: PL/SQL if-else, case statements” is published by ChunJen Wang in ...

#34. [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 。

#35. SQL CASE的使用方法- 誰說烏龜不會飛

CASE 陳述式或許是SQL-92最為有用的功能之一 · CASE · WHEN condition THEN result · [WHEN···] · [ELSE result] · END · CASE expression · WHEN value THEN ...

#36. [SQL] SQL 語法-- CASE WHEN [Update: 2008.04.20]

EXAMPLE 01. 字串形態CASE std_final_result WHEN "1" THEN "正取" ... [SQL] SQL 語法-- CASE WHEN [Update: 2008.04.20] ...

#37. CASE Statement & Nested Case in SQL Server: T-SQL Example

CASE Statement in SQL Server is the extension of IF…ELSE statement. Unlike IF…ELSE, where only the maximum of one condition is allowed, ...

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

CASE function. Definition, syntax, examples and common errors using BigQuery Standard SQL. The CASE function allows you to perform conditional statements in ...

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

Based on those logical evaluations, you can generate various values as part of the returned data set. Using the CASE Statement. This is most easily accomplished ...

#40. [SQL] CASE…WHEN 進行排序和分組 - 程式前沿

SQL CASE …WHEN 進行排序和分組基本排序置頂單行資料並將其他資料排序select * from tb_schedule_zy order by (case schedule_id when '1' then 0 else ...

#41. CASE Expressions

ELSE logic in SQL statements without having to invoke procedures. ... In a simple CASE expression, Oracle Database searches for the first WHEN .

#42. Use Cases for SQL's CASE statement | TechChannel

In an SQL procedure, you can also use IF. But in a SELECT statement, the way to conditionally test and perform options, is the CASE statement.

#43. SQL CASE 关键字| 新手教程

SQL CASE 关键字. CASE. CASE 命令用于根据条件创建不同的输出。 以下SQL经历了几个条件，并在满足指定条件时返回一个值：. 实例. SELECT OrderID, Quantity, CASE ...

#44. SQL之CASE WHEN用法详解 - 知乎专栏

SQL 之CASE WHEN用法详解 ... 简单CASE WHEN函数只能应对一些简单的业务场景，而CASE WHEN条件表达式的写法则更加灵活。 CASE WHEN条件表达式函数：类似JAVA ...

#45. SQL CASE Statement | Quick Tips Ep61 - YouTube

In this video I show you 3 different ways to use the SQL Case Statement. I demonstrate the Simple CASE ...

#46. 用CASE WHEN轉換欄位的值

usr/lib/php:/usr/local/lib/php') in /home/yehyeh/public_html/sql/content/CaseWhen.php on line 34. SELECT NO, SCORE, CASE WHEN SCORE >= 90 THEN 'A'

#47. SQL 中case when ...then...else ...end用法 - CSDN博客

根据这个国家人口数据，统计亚洲和北美洲的人口数量。使用如下SQL： SELECT CASE country WHEN '中国' THEN '亚洲' ...

#48. PL/SQL CASE语句 - 易百教程

PL/SQL CASE语句. 像 IF 语句一样， CASE 语句选择要执行的一个语句序列。 但是，要选择序列， CASE 语句使用选择器而不是多个布尔表达式。选择器是一个表达式，其值用 ...

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

case -operand, when-condition, and result-expression must be valid sql-expressions. See sql-expression . Details. The CASE expression selects values if certain ...

#50. Optimize SQL Queries with CASE Expressions in Unexpected ...

It is time to take your SQL skills from average to extraordinary ... The Case Expression should be part of the SQL coders treasure chest.

#51. Pragmatic Guide to SQL Server CASE Expression

This tutorial shows you how to use the SQL Server CASE expression to add if-else logic to SQL queries with many practical examples.

#52. CASE Clause - Spark 3.2.0 Documentation

Spark SQL Guide · Getting Started · Data Sources · Performance Tuning · Distributed SQL Engine · PySpark Usage Guide for Pandas with Apache Arrow · Migration Guide ...

#53. SQL CASE Expression - TIBCO Documentation

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

#54. CASE: SQL Case Operator - WebFOCUS Release 8.2 ...

The CASE operator allows a value to be computed depending on the values of expressions or the truth or falsity of conditions. Syntax: How to Use the SQL Case ...

#55. case statement in sql | case in sql - Tech Altum Tutorial

Case statement in sql helps to display customize data in select statement. Sometimes we need to display data in different manner, in this situation we can ...

#56. SQL Case Statement in Oracle - DBA Genesis Support

Oracle SQL CASE statement gives you the flexibility to use sql IF ELSE logic in a SELECT, WHERE and JOIN clause. Note: same CASE statement ...

#57. Case Statement in SQL – Example Query - freeCodeCamp

If you need to add a value to a cell conditionally based on other cells, SQL's case statement is what you'll use.

#58. CASE | SQL Tutorial Documentation on data.world

An introduction to the CASE expression. CASE is a general conditional expression that allows you to test data for equality with a specified value, partition ...

#59. A Simple Use of Case Statement in SQL Server 2012 - C# ...

A Case expression is mostly used in SQL stored procedures or as a formula for a particular column, which optimizes the SQL statements. So let's ...

#60. SQL CASE Statement with Multiple Conditions - CodingStatus

SQL Case Statement -The case statement is the heart of SQL. Because It can control the execution of different sets of statements. It handles the ...

#61. 在SQL Server中执行嵌套case语句逻辑的最佳方法 - 码农家园

Best way to do nested case statement logic in SQL Server我正在写一个SQL查询，其中需要根据很多条件来计算返回的一些列。

#62. SQL CASE: Know and Avoid 3 Lesser-Known Hassles

Expressions in the Microsoft SQL CASE statement are mostly evaluated sequentially or from left to right. It's a different story, though, when ...

#63. SQL UPDATE CASE WHEN 的使用方法 - 青蛙跳跳

很不幸的所有的I跟O都對調了，不過還好的是一行SQL就可以解決。 UPDATE Transactions SET TransactionType = ( CASE TransactionType. WHEN 'I' THEN 'O'

#64. PL/SQL CASE敘述(轉) - oracle園地- 痞客邦

CASE WHEN condition1 THEN statements1 [WHEN condition2 THEN statements2] … [ELSE statements3] END CASE;. 2.CASE運算式. sex_name :=

#65. 简单CASE函数_数据湖探索DLI_Spark SQL语法参考 - 帮助中心

依据input_expression与when_expression的匹配结果跳转到相应的result_expression。CASE：简单CASE函数中支持子查询，但须注意input_expression ...

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

The CASE function in SQL is a great way to customize the output of your SQL to better suit the needs of your End Users.

#67. 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 ...

#68. CASE (SQL-92 Compatible) - FairCom

SQL Reference Guide ... The CASE scalar function is a type of conditional expression. (See Conditional Expressions for more details and a summary ...

#69. SQL 語法中CASE 的用法

CASE 是SQL用來做為if…then…else 之類的邏輯判斷的關鍵字。CASE的語法如下: 簡單的CASE函數: SELECT CASE “欄位名" WHEN “條件1″ THEN “結果1″

#70. SQL SELECT CASE - 老黃的電腦窩

Select Case Statement: Microsoft Access is a very versatile data-handling tool. There are numerous control statements that turn the program ...

#71. SQL中的case when then else end用法- SegmentFault 思否

类似于python中的if else判断, CASE一个字段, when这个字段的值是'1'的时候返回'男', '2'返回'女'. END结束as一个标题sex.

#72. Case - Learn SQL | Codecademy

A CASE statement allows us to create different outputs (usually in the SELECT statement). It is SQL's way of handling if-then logic.

#73. PL/SQL Case Tips - Burleson Consulting

PL/SQL Case Tips. Oracle Database Tips by Donald BurlesonAugust 29, 2015. Question: I have used the CASE statement in SQL, but ...

#74. SQL语句中CASE WHEN的使用实例 - 数据库

SQL 中的CASE WHEN语句是经常要用到的，下面将结合实例，为您详解CASE WHEN语句的使用，供您参考，希望对您学习SQL语句能有所帮助。 一张表数据如下 1900-1-1 胜

#75. Filtering your CASE statement | SQL - DataCamp

Here is an example of Filtering your CASE statement: Let's generate a list of matches won by Italy's Bologna team! There are quite a few additional teams in ...

#76. What Is CASE in SQL? | LearnSQL.com

SQL CASE is a very useful expression that provides if-else logic to your SQL queries. It's a slightly more advanced topic, but you'll need ...

#77. CASE expression - Amazon Redshift

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

#78. 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.

#79. SQL Server CASE的用法

在寫SQL語法的時候，偶爾需要簡單的判斷。 例如，欄位Sex的值可為數字0和1，分別代表女性和男性， 可以使用CASE關鍵字， ...

#80. SQL中Case的使用方法

SQL 中Case的使用方法. Case具有兩種格式。簡單Case函數和Case搜索函數。 --簡單Case函數 CASE sex WHEN '1' THEN '男' WHEN '2' THEN '女' ELSE ...

#81. SQL – Case Sensitive & Insensitive - Benjr.tw

SQL – Case Sensitive & Insensitive ... 請參考– http://benjr.tw/102156 ) ,只有Binary 的資料格式(Data Type) 才有區分大小寫( Case sensitive ).

#82. Using LookML CASE vs SQL CASE WHEN - Looker Help Center

Looker offers the ability to write a CASE statement in LookML using the case parameter. This leads to the question of why we should...

#83. Examples to Implement SQL CASE Statement - eduCBA

CASE is an expression statement in Standard Query Language(SQL) used primarily for handling conditional statements similar to IF-THEN-ELSE in other programming ...

#84. CASE | Exasol Documentation

CASE. Purpose. With the help of the CASE function, an IF THEN ELSE logic can be expressed within the SQL language. Syntax. case::= Case.

#85. How to Check Case-Sensitivity in SQL Server | Webucator

SQL Server is, by default, case insensitive; however, it is possible to create a case-sensitive SQL Server database and even to make specific table columns ...

#86. How to Use the SQL CASE Expression with Values - dummies

You can use a more compact form of the SQL CASE expression if you're comparing a test value for equality with a series of other values.

#87. Calculating results with CASE | More advanced SQL queries

Shouldn't the case be altered to show " WHEN number_grade >= 90 THEN 'A' " to also include Winston's 90 as an A result (and repeat for the consequent letter ...

#88. 【SQL】 Case When Then 和isNull的用法 - 程式隨筆

【SQL】 Case When Then 和isNull的用法. ISNULL: 第一個參數如果取得的值為Null時,則用第二個參數當作其值. Case When Then: 以這個例子為例, ...

#89. [SAS] SQL 基本指令介紹part2

CASE expression屬於條件式語法，而且記得要以END作結. 舉一個簡單的例子，看完後應該會感覺到有DATA STEP中IF THEN ELSE的味道。 proc sql;

#90. Documentation: 9.4: Conditional Expressions - PostgreSQL

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

#91. PostgreSQL CASE

In this tutorial, we will show you how to use the PostgreSQL CASE expression to form conditional query.

#92. SQL Server CASE - javatpoint

SQL Server CASE. The CASE expression is a part of the control flow function that evaluates a list of conditions and gives the output when the first ...

#93. SQL中的CASE WHEN使用- 云+社区 - 腾讯云

SQL 中的CASE WHEN使用Case具有两种格式。简单Case函数和Case搜索函数。 –简单Case函数CASE sex WHEN '1' THEN '男' WHEN '2' THEN '女' ELSE '其他' ...

#94. When to Use the SQL CASE Statement | 365 Data Science

Let's focus on the SQL CASE statement. It is used within a SELECT statement when we want to return a specific value, based on some ...

#95. Does SQL Server CASE statement evaluate all conditions or ...

This is standard SQL behaviour: A CASE expression evaluates to the first true condition. If there is no true condition, it evaluates to the ...

#96. 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 ...

#97. SQl語法疑問CASE WHEN用法- 藍色小舖BlueShop

如下,當我用case when 之後給別名Status 那我怎麼用這個Status呢因為我有另一個欄位,是當Status='XXX'時,要在比對另一個資料表但在下面直接Select ...

#98. CASE clause | Databricks on AWS

Learn how to use the CASE syntax of the SQL language in Databricks.