How do you write a subquery in a case statement?

How do you write a subquery in a case statement?

Subqueries in BETWEEN and CASE Statements

1. |–Nested Loops(Inner Join, OUTER REFERENCES:([T2].[A], [Expr1004]))
2. |–Nested Loops(Inner Join, OUTER REFERENCES:([T2].[A], [Expr1008]))
3. |–Compute Scalar(DEFINE:([Expr1007]=If ([Expr1004]=[T1].[B1]) then ‘B1’ else If ([Expr1004]=[T1].[B2]) then ‘B2’ else NULL))

Can you put a select statement in a case statement?

CASE can be used in any statement or clause that allows a valid expression. For example, you can use CASE in statements such as SELECT, UPDATE, DELETE and SET, and in clauses such as select_list, IN, WHERE, ORDER BY, and HAVING.

How do you write a Select Case statement?

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….Insert statement with CASE statement.

Can we write CASE statement in where clause in SQL Server?

According to MS SQL Docs, a CASE statement can be used throughout the SELECT statement. CASE can be used in any statement or clause that allows a valid expression. For example, you can use CASE in statements such as SELECT, UPDATE, DELETE and SET, and in clauses such as select_list, IN, WHERE, ORDER BY, and HAVING.

How do you write multiple conditions in a CASE statement in SQL?

Here are 3 different ways to apply a case statement using SQL:

1. (1) For a single condition: CASE WHEN condition_1 THEN result_1 ELSE result_2 END AS new_field_name.
2. (2) For multiple conditions using AND: CASE WHEN condition_1 AND condition_2 THEN result_1 ELSE result_2 END AS new_field_name.

What is a SELECT CASE statement?

A Select Case statement allows a variable to be tested for equality against a list of values. Each value is called a case, and the variable being switched on is checked for each select case.

What is a case statement in SQL Server?

Understanding the SQL Server CASE statement Creating dummy data. The script above has created a dummy database called ShowRoom with one Table in it called Cars. SQL Server CASE statement syntax. CASE statement examples. Multiple conditions in CASE statement. Using GROUP BY with SQL Server CASE statement. Conclusion. Other great articles from Ben.

What is a case function in SQL?

Case Function. Case function execute a sequence of statement depending upon condition. CASE function in SQL operates by comparing the first expression to the expression in each WHEN clause for equivalency. Expressions which are equivalent in Case function, expression in the THEN clause will be executed.