Set up an Environment
-- Products Table
CREATE TABLE Products (
ProductID INT,
ProductName VARCHAR(50),
CategoryID INT
);
-- Sample Data for Products Table
INSERT INTO Products (ProductID, ProductName, CategoryID)
VALUES (1, 'Laptop', 1),
(2, 'Mouse', 2),
(3, 'Keyboard', 2),
(4, 'Monitor', 1);
-- Orders Table
CREATE TABLE Orders (
OrderID INT,
ProductID INT,
Quantity INT
);
-- Sample Data for Orders Table
INSERT INTO Orders (OrderID, ProductID, Quantity)
VALUES (1001, 1, 2),
(1002, 3, 1),
(1003, 2, 3),
(1004, 4, 2);
order table:
product table:
Difference Between EXISTS and IN in SQL Server?
The SQL Server database developer is quite familiar with the filtering and retrieving operators which enable the developer to execute the query rapidly. When it comes to these operators namely IN and EXISTS, they share almost similar purposes but work differently at the same level.
Understanding the variations between the two operators is very important for better tuning of query performance and the desired outcomes.