How do you write a case in a query?

How do you write a case in a query?

Case Statement with Order by clause

1. Select EmployeeName,Gender,Salary.
2. from Employee.
3. ORDER BY CASE Gender.
4. WHEN ‘F’ THEN Salary End DESC,
5. Case WHEN Gender=’M’ THEN Salary.
6. END.

Can we use CASE statement in where clause in Oracle SQL?

Introduction to Oracle CASE expression You can use a CASE expression in any statement or clause that accepts a valid expression. For example, you can use the CASE expression in statements such as SELECT , UPDATE , or DELETE , and in clauses like SELECT , WHERE , HAVING , and ORDDER BY .

Can case statement return multiple values in Oracle?

4 Answers. A CASE statement cannot return more than one value, it is a function working on one value.

HOW DO CASE statements work?

The CASE statement chooses from a sequence of conditions, and executes a corresponding statement. The CASE statement evaluates a single expression and compares it against several potential values, or evaluates multiple Boolean expressions and chooses the first one that is TRUE .

Can we use CASE statement without else in SQL?

The SQL CASE Statement If there is no ELSE part and no conditions are true, it returns NULL.

How to write case statement in where clause?

We can use a case statement in Where, Order by and Group by clause. In the Customer table, I have displayed the First Name is Ram or the Last Name is Sharma’s salary. So, by using a CASE statement with the where condition displays the result.

What is a case statement?

The case statement is usually a public-facing document tied to a particular fundraising appeal.

A case statement can take many forms,from a glossy brochure to a brief statement of need to a presentation or letter.

A case statement should be written for your donors and supporters,not your internal audience.

What is a SELECT CASE statement?

The Select Case statement is another way to test what is inside of a variable. You can use it when you know there is only a limited number of things that could be in the variable. For example, suppose we add another choice for that cream cake.

What does case mean in SQL?

SQL CASE. CASE is used to provide if-then-else type of logic to SQL. There are two formats: The first is a Simple CASE expression, where we compare an expression to static values. The second is a Searched CASE expression, where we compare an expression to one or more logical conditions.