In PostgreSQL’s PL/pgSQL language, you can create constants using the CONSTANT keyword. Constants are values that don’t change during the execution of a PL/pgSQL block and are typically used for storing values that you want to use without modification throughout your code. Constants can be of various data types, including numeric, text, or custom types….

In PostgreSQL’s PL/pgSQL language, you can declare and use variables for storing and manipulating data within stored procedures, functions, and triggers. PL/pgSQL supports various data types for variables, including the standard SQL data types and custom types defined in your database. Here’s how you can declare and use variables in PL/pgSQL: Declaration: You can declare…

In PostgreSQL, you can write stored procedures, functions, and triggers using various programming languages. PostgreSQL supports multiple procedural languages, including: When you create a function or procedure in PostgreSQL, you can specify the language you want to use, and then write the code accordingly. Here’s a basic example of creating a function using PL/pgSQL: sqlCopy…