sql case statement
Here, theCASEstatement checks if theamountis greater than or equal to400. If this condition is satisfied, a new columnoffer_pricewill contain the values equal toamount - amount * 10/100. CASE With Multiple Conditions It is also possible to stack multiple conditions inside a singleCASEclause. ...
In the following query, we are using multiple WHEN and THEN conditions to the CASE statement along with the ELSE clause.If the AGE of the customer is greater than 30, it returns Gen X otherwise moves to the further WHEN and THEN conditions. If none of the conditions is matched with the...
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,
To finish up, let’s take a look at CASE functionality inside an UPDATE statement. The employees deserve a bonus in the form of extra vacation days. If you don’t have many left, you get 3 extra days. If you have between 10 and 20 hours left, you get 2 extra days, otherwise you...
Explanation: The UPDATE statement updates the status of employees with IDs 2,4, and 5 to INACTIVE. Difference Between Updating Multiple Records with and Without CASE WHEN Parameter With CASE WHEN Without CASE WHEN Use Case It can be used when different rows have to be updated with different va...
Let’s consider an example where we want to count the number of students enrolled each year. To achieve this, we can use a CASE statement within the COUNT aggregate function: SELECTCASEWHENenrollment_dateBETWEEN'2020-01-01'AND'2020-12-31'THEN'2020'WHENenrollment_dateBETWEEN'2021-01-01'AND'...
The SQL CASE Expression 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 theELSE...
Posted Procedure : CASE statement using SQL 4231 Tarun Bajaj September 04, 2012 02:28PM Re: Procedure : CASE statement using SQL 1269 Rick James September 05, 2012 09:16PM Sorry, you can't reply to this topic. It has been closed....
I have a stored procedure that uses case statement. Each When clause has an update statement. I am trying to call this stored procedure multiple times and based on the pass parameter, I run an update statement. Unfortunately, the update statement does not execute correctly. There are no chang...