What is chaining in SQL?

In SQL chaining refers to the process of linking multiple SQL statements together into a single string, separated by semicolons. This allows you to execute multiple SQL statements at once, without having to execute them individually. 

For example, you might chain together a SELECT statement to retrieve data from a table, followed by an UPDATE statement to modify the data, and then a DELETE statement to remove it. When using chaining, it is important to note that each statement will be executed in the order they appear in the chain and that the results of one statement can be used in the next one. Additionally, when chaining SQL statements, if any statement in the chain fails, the entire chain will fail and none of the statements will be executed. It is important to use it carefully because if any statement in the chain fails, the entire chain will fail and none of the statements will be executed.

In this tutorial, we will see how to chain multiple statements with psycopg2 which is a PostgreSQL database adapter for Python. Chaining is supported by most SQL databases and can be used in various types of SQL clients, such as command-line interfaces, web-based management interfaces, and programming language libraries like psycopg2. let’s understand chaining in SQL chaining.