SQL SET Statement Purpose Explained

The SET statement in SQL is used to assign a value to a variable. It can be used for storing and manipulating data, as well as using it in queries. The main purposes of SET can be summarized as follows:

1. Assigning a value to a variable: Using SET to assign a value to a variable makes it easier to use in subsequent queries or calculations.
2. Store intermediate results: In a query, you can store intermediate results in variables using SET for later use in subsequent queries.
3. Perform calculations and operations: SET can be used to perform a variety of calculations and operations such as addition, subtraction, multiplication, division, string concatenation, etc.
4. Control flow: SET can be used to control the flow, such as for conditional statements and loops.

In general, the purpose of SET in SQL is to define and manipulate variables for use in queries and calculations, allowing for more flexibility and dynamism in handling data.