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

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

The SELECT statement with a simple CASE expression. In this type of CASE statement, we use equality check expressions. The following query ...

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

THEN logic in SQL Server, which allows users to execute programmatic logic on ... SELECT CASE WHEN books.title = 'The Hobbit' THEN 'Middle-earth' WHEN ...

#13. SQL CASE Expression - TIBCO 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 ...

#14. CASE Expressions

ELSE logic in SQL statements without having to invoke procedures. ... SELECT cust_last_name, CASE credit_limit WHEN 100 THEN 'Low' WHEN 5000 THEN 'High' ...

#15. Using CASE to Add Logic to a SELECT | LearnSQL.com

As you write an SQL query, you may need to get values from multiple columns and change values from one form to another. The simple way to ...

#16. CASE expression - IBM

CASE expressions allow an expression to be selected based on the evaluation of one or more conditions. case-expression. Read syntax diagram Skip visual ...

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

Query 2: SIMPLE CASE with the ELSE option. SELECT Tutorial_ID, Tutorial_name, CASE Tutorial_name WHEN 'SQL' THEN 'SQL is developed by IBM' WHEN ...

#18. select case when sql Code Example

NOTE: this is for SQL-Oracle specifically /* NB: Please like Mingles444 post, I derived this from him/her ... SQL answers related to “select case when sql”.

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

Then we'll give to the column the name grade using the AS keyword: SELECT *, CASE WHEN score >= 94 THEN " ...

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

SQL CASE changes the result based on conditions. CASE works in MySQL, PostgreSQL, Oracle, ... SELECT CASE WHEN id = 0 THEN 1/0 ELSE 1 END AS hit FROM demo ...

#21. Using Case With Select and Update Statement in SQL Server ...

Case Expression with Select Statement · Select Stu_Id,Stu_Name,Marks, · Case When Marks > 32 Then 'Pass' Else 'Fail' · End as Remarks, · Case When ...

#22. SQL CASE Statement - TutorialsCampus

Requirement – Getting rows from employee_details table by using CASE statement. The query was as follows – SELECT emp_name, salary, CASE WHEN salary > ...

#23. Using Oracle CASE Expression By Practical Examples

Oracle CASE expression allows you to add if-else logic to SQL statements ... For example, you can use the CASE expression in statements such as SELECT ...

#24. case when pl sql select CASE - Mutfxo

case when pl sql select CASE · PL/pgSQL SELECT INTO Statement Explained By Examples · Oracle CASE When, Select and Other Statements — …

#25. SQL Expressions, Complex CASE - ABAP Keyword ...

SQL Expressions, Complex CASE. ... This example demonstrates complex case distinctions in SQL expressions. Source Code ... SELECT num1, num2, CASE WHEN num1 ...

#26. 9.18. 條件表示式 - PostgreSQL 正體中文使用手冊

本節介紹PostgreSQL 中符合SQL 標準可用的條件表示式。 ... 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 ... SELECT * FROM test;.

#27. Pragmatic Guide to SQL Server CASE Expression

B) Using simple CASE expression in aggregate function example. See the following query: SELECT SUM(CASE WHEN order_status = 1 THEN ...

#28. Documentation: 7.4: Conditional Expressions - PostgreSQL

The SQL CASE expression is a generic conditional expression, ... SELECT * FROM test; a --- 1 2 3 SELECT a, CASE WHEN a=1 THEN 'one' WHEN a=2 THEN 'two' ELSE ...

#29. PostgreSQL CASE

In this tutorial, we will show you how to use the PostgreSQL CASE ... To apply this logic, you can use the CASE expression in the SELECT statement as ...

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

You can use CASE expressions in the SELECT, UPDATE, and INSERT statements. Example. The following two PROC SQL steps show two equivalent CASE expressions that ...

#31. 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. · For example, let us assume we ...

#32. 使用SQL CASE 陳述式

它是一個功能強大的資料庫開發和管理工具，可以同時連線到大部分受歡迎的資料庫，包括MySQL、MariaDB、MongoDB、SQL Server、Oracle、PostgreSQL 和SQLite ...

#33. CASE - Snowflake Documentation

The value returned from the function has the highest-precedence collation of the THEN / ELSE arguments. Examples¶. This shows a typical use of CASE : SELECT ...

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

The CASE function allows you to perform conditional statements in SQL. ... SELECT colour, CASE WHEN colour IN ('blue', 'red', 'yellow') THEN true ELSE false ...

#35. SQL Tutorial => Shorthand CASE in SELECT

CASE 's shorthand variant evaluates an expression (usually a column) against a series of values. This variant is a bit shorter, and saves repeating the ...

#36. SQL Code – CASE in select with WHEN (1=1)? | Toolbox Tech

SQL Code – CASE in select with WHEN (1=1)? ... Hi all, Can someone provide a little education please? ... that have just been in the WHERE clause?

#37. Dirty Secrets of the CASE Expression - SQLPerformance.com

Detailed guide with T-SQL CASE expression explanation, examples, ... SELECT StatusLabel = CASE [status] WHEN 'A' THEN 'Authorized' WHEN 'C' ...

#38. How CASE WHEN Works - The Data School

If you try to compare incompatible types SQL will return an “Invalid Input Syntax” error. Same Data Type. SELECT Track.Name, Track.

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

... SQL CASE expression if you're comparing a test value for equality with a series of other values. This form is useful within a SELECT or UPDATE statement ...

#40. CASE expression - Amazon Redshift

CASE is a conditional expression similar to if/then/else statements found in ... select venuecity, case venuecity when 'New York City' then 'Big Apple' else ...

#41. Practical SQL: Select Case When. Hands-on tutorial with MySQL

SQL is used by most relational database management systems (RDBMS) to manage data stored in tabular form (i.e. tables).

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

In this table in gender column the data is 'f' for female and 'm' for male. If we run normal select query it will show data in same format but I want that it ...

#43. SQL CASE SELECT statement with conditions - Caspio: Forums

Hi, I am trying to get data from a table to a datapage calculated field based on conditions that are chosen in the data page.

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

CASE WHERE ELSE Sql There are two different types of CASE quires. One is matching value and other one is matching condition.

#45. 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 ...

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

It's good for displaying a value in the SELECT query based on logic that you have defined. As the data for columns can vary from row to row, using a CASE SQL ...

#47. [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.

#48. SQL CASE

Le CASE peut être utilisé dans n'importe quelle instruction ou clause, telle que SELECT, UPDATE, DELETE, WHERE, ORDER BY ou HAVING.

#49. If Statement In Sql Select Query - Leander Band

Sql if queries with sqlskills and return a subquery case is selected. This calculated column list to sql if! Parentheses if you group conditional SQL statements ...

#50. CASE Expressions - Vertica

The CASE expression is a generic conditional expression that can be used ... SELECT a, CASE WHEN a=1 THEN 'one' WHEN a=2 THEN 'two' ELSE 'other' END FROM ...

#51. How do I use a case statement in the where clause in SQL ...

CASE STATEMENT IN WHERE CLAUSE:. “How do I use a case statement in the where clause in SQL Server?” is published by Vaishali Goilkar.

#52. SQL Server CASE - javatpoint

The CASE expression can be used anywhere a valid program or query is used like SELECT, WHERE, and ORDER BY clause. Its main function is to manage multiple IF ...

#53. SQL - Add subqueries inside case statement - gists · GitHub

SELECT dbo.tPerson.pNameLast, CASE WHEN tApplication.aDeptChair IS NOT NULL THEN CASE WHEN tApplication.aDeptChair <> 0 THEN. ''subquery 1.

#54. CASE OPERATOR - MariaDB Knowledge Base

There is also a CASE statement, which differs from the CASE operator described here. Examples. SELECT CASE 1 WHEN 1 THEN 'one' WHEN ...

#55. SQL利用Case When Then多條件- IT閱讀

ELSE '其他' END; 同樣的，我們也可以用這個方法來判斷工資的等級，並統計每一等級的人數。SQL代碼如下； SELECT CASE WHEN salary <= 500 THEN '1'

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

Simple CASE expression example. The following example returns the book title, the number of authors of each book, and a note: SELECT b.

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

new_field_name: discount. So the complete syntax would look like this: SELECT name, age, CASE WHEN age >= 60 THEN 'senior discount' ELSE ' ...

#58. How to Use SQL CASE for Conditional Logic in Your SQL ...

SQL CASE provides the author of the query with the ability to perform conditional logic in their SQL queries for SELECT, INSERT, UPDATE, ...

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

In this tutorial, you have learned about SQLite CASE expression to form conditional logic inside a SQL query. Was this tutorial helpful ?

#60. 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 ... select case salary when salary>1000 then 500.

#61. SQL Tutorial - CASE Statements - YouTube

#62. SQL CASE 藝誠網頁設計公司

CASE 是SQL用來做為if/then/else 語句，作為邏輯判斷。 CASE 子語句用法. SELECT CASE ("欄位名") WHEN "條件1" THEN "結果1" WHEN " ...

#63. Oracle – Usando a expressão Case - PL/SQL - MasterTraining

A expressão CASE executa a lógica if-then-else em SQL . ... SELECT product_id, product_type_id, CASE product_type_id WHEN 1 THEN 'Book' WHEN 2 THEN 'Video' ...

#64. SQL | Case Statement - GeeksforGeeks

In this post, we explore the Case-Switch statement in SQL. ... SELECT FacultyID, Name, Department, CASE Gender WHEN'M' THEN 'Male' WHEN'F' ...

#65. The CASE expression - jOOQ

The CASE expression is part of the standard SQL syntax. While some RDBMS also offer an IF expression, ... SELECT -- Searched case CASE WHEN AUTHOR.

#66. SQL CASE Statement with Multiple Conditions - CodingStatus

We can also use it in an insert, select, update or delete statement along with Where, Order By, Group By clause so on. As we know that we ...

#67. SQL refresher: How to use the CASE function in a select ...

Present it in a more understandable format with a CASE function. ... Let's look at using a CASE function in our SQL select statement.

#68. SQL Case Statement Explained [Practical Examples]

We can use SQL CASE Statement with Other SQL Statements such as SELECT, UPDATE, DELETE and SET, ...

#69. 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 ...

#70. CASE construct - Firebird

The results don't have to be literal values: they may also be field or variable names, compound expressions, or NULL literals. Example: select name, age, case ...

#71. Use CASE WHEN for string value - SQL / MySQL - Java2s.com

Use CASE WHEN for string value : CASE WHEN Select « Flow Control « SQL / MySQL.

#72. Filtering your CASE statement | SQL - DataCamp

SELECT * FROM table WHERE CASE WHEN a > 5 THEN 'Keep' WHEN a <= 5 THEN 'Exclude' END = 'Keep';. In essence, you can use the CASE statement as a filtering ...

#73. CASE clause | Databricks on AWS

Learn how to use the CASE syntax of the SQL language in Databricks. ... SELECT id, CASE id WHEN 100 then 'bigger' WHEN id > 300 THEN '300' ...

#74. T-SQL Programming Part 5 - Using the CASE Function

This article will discuss using the CASE function in a T-SQL SELECT statement. The CASE function allows you to evaluate a column value on a ...

#75. Examples to use CASE Expression in SELECT statement in ...

Description: CASE statement in SQL is used to provide if-then-else type of logic as in other programming languages like C, C++, C# etc.

#76. SQL中Case的使用方法

如果使用Case函數，SQL代碼如下: SELECT SUM(population), CASE country WHEN '中國' THEN '亞洲' ...

#77. The Ultimate Guide To SQL CASE Expression

This tutorial shows you how to use two forms of SQL CASE: simple CASE and ... For example, you can use the CASE expression in statements such as SELECT, ...

#78. ORDER BY 高级用法之CASE WHEN - 178mz - 博客园

今天在公司查看一段sql SP代码，发现了一段比较奇怪的代码。 大概长这样子：. 复制代码. Select * from tableA ORDER ...

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

In a SELECT statement, the way to conditionally test and perform options is the CASE statement. Rick Flagler looks at use cases for SQL's ...

#80. sql server select case when的用法 - IT人

select case whenCASE WHEN condition THEN result[WHEN ...][ELSE result]ENDCASE 子句可以用於任何表示式可以有效存在的地方。 condition 是一個 ...

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

摘要:[T-SQL] CASE語法. ... select case when convert(sysname,serverproperty('Servername')) like '%\%' then 'MSSQL$' + @@servicename else ...

#82. Can I have a CASE Statement in the WHERE Clause?

There are a number of examples using the CASE WHEN construct in SQL, such as the SELECT columns or in ORDER BY clauses, but we tend to ...

#83. Оператор CASE - SQL-tutorial.ru

Чтобы заменить NULL-значения нужным текстом, можно воспользоваться оператором CASE: Консоль. Выполнить. SELECT DISTINCT product.model,. CASE.

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

-- aggregate function evaluated first and generated an error DECLARE @value INT = 0; SELECT CASE WHEN @value = 0 THEN 1 ELSE MAX(1/@value) END;.

#85. Examples to Implement SQL CASE Statement - eduCBA

CASE is an expression statement in Standard Query Language(SQL) used primarily for ... A CASE statement is generally used as a part of a SELECT clause, ...

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

select left_table.barcode, left_table.input_qty, case when right_table.output_qty is NULL then 0 else right_table.output_qty end as ...

#87. Understanding SQL server switch case (With Example)

You can use CASE expressions anywhere in the SQL Query like CASE expressions can be used within SELECT statement, WHERE clauses, ...

#88. CASE | Caché SQL Reference - InterSystems Documentation

The Simple CASE expression tests a series of value expressions (specified by a WHEN clause) to see if they are equal to a given value expression: SELECT ...

#89. PL/SQL - CASE Statement - Tutorialspoint

Like the IF statement, the CASE statement selects one sequence of statements to execute. However, to select the sequence, the CASE statement uses a selector ...

#90. SQL Language--SELECT CASE WHEN THEN - Programmer ...

Simple Case function: CASE sex WHEN '1' THEN 'male' WHEN '2' THEN 'female' ELSE 'Other' END Case ... SQL Language--SELECT CASE WHEN THEN.

#91. Conditional Expressions — Presto 0.265.1 Documentation

The standard SQL CASE expression has two forms. ... SELECT a, CASE a WHEN 1 THEN 'one' WHEN 2 THEN 'two' ELSE 'many' END Copy to clipboard.

#92. Oracle CASE SQL statement - Burleson Consulting

Oracle CASE SQL statement ... The CASE statement is like a series of IF statements, only using the key word WHEN. A CASE statement is evaluated from top to bottom ...

#93. MySQL CASE Expressions Explained By Practical Examples

In this tutorial, you will learn how to use the MySQL CASE expression to add if-else logic to SELECT, WHERE, and ORDER BY of a query.

#94. 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 ...

#95. 16. Learn Advanced CASE queries! - QueryPie

SELECT * FROM payment;. Here are the columns we can see in the Payment table: Payment ID number (payment_id); Customer ID number (customer_id) ...

#96. CASE & TOP 1 in a sub query - SQL Server Forums

WHERE ANTYPE IS NULL SELECT * FROM #ANTYPE I get an error Msg 156, Level 15, State 1, Line 142. Incorrect syntax near the keyword 'case'.

#97. How to Use OR Condition in CASE WHEN Statement? - SQL ...

If these expressions are equivalent, the expression in the THEN clause will be returned. DECLARE @TestVal INT SET @TestVal = 3 SELECT CASE @ ...

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

The following example shows a searched CASE expression and an equivalent simple CASE expression. - Searched case expression: SELECT tbl,. CASE.

#99. [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 ...