In the T-SQL scripting language, you can use the SQL CASE statement to evaluate a condition and return one or more result expressions. This SQL Tutorial will teach you when and how you can use CASE in T-SQL sta
-- CASE condition with ELSE clause in SQL SELECT customer_id, first_name, CASE WHEN country = 'USA' THEN 'United States of America' WHEN country = 'UK' THEN 'United Kingdom' ELSE 'Unknown Country' END AS country_name FROM Customers; Here, the result set contains a new column, country...
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, and Group By clause. It can be used in the Insert statement as well. In this article, we would explore the CASE statement and its various use...
'VARCHAR' is not a recognized built-in function name. 'WHEN MATCHED' cannot appear more than once in a 'UPDATE' clause of a MERGE statement. "EXECUTE AT" with Dynamic Linked Server Name "explicit value must be specified for identity column in table" error in SQL 2000 "FROM clause have ...
将URL添加到SQL Case语句中,可以通过以下步骤实现: 1. 首先,确保数据库中有一个包含URL的表,其中至少包含一个列用于存储URL。 2. 在SQL Case语句中,使用URL作为条件进...
TheCASEexpression goes through conditions and returns a value when the first condition is met (like an if-then-else statement). So, once a condition is true, it will stop reading and return the result. If no conditions are true, it returns the value in theELSEclause. ...
EN如何在jupyter中同时使用python2和3？ 由于我是通过anaconda来安装的Jupyter Notebook，所以首先需要解决...
I am trying to use a CASE statement in the WHERE clause, but I am receiving syntax errors and am not sure what I am doing wrong or if there is a better way to approach it. SELECT lr.* FROM lab_results lr ,patient pat WHERE lr.patient_id = pat.patient_id ...
SQL: CASE Statement 1.CASE 写法如下: CASE WHEN condition1 THEN result1 WHEN condition2 THEN result2 WHEN conditionN THEN resultN ELSE result END; 解释:1)先匹配第一条,不匹配的话继续第二条,如此循环,
SQL CASE Statement - Learn how to use the SQL CASE statement to perform conditional logic in your SQL queries effectively.