In PostgreSQL’s PL/pgSQL, you can use the WHILE statement to create a loop that continues executing a block of code as long as a specified condition remains true. The WHILE loop is a conditional loop that evaluates the condition at the beginning of each iteration, and if the condition is true, it continues looping; otherwise,…

In PostgreSQL’s PL/pgSQL, you can use loop statements to create loops and iterate over a sequence of statements. PL/pgSQL provides several types of loop statements, including LOOP, WHILE, and FOR, each with its own use cases. Here, we’ll focus on the LOOP statement, which creates an unconditional loop that continues until explicitly terminated using the…

In PostgreSQL’s PL/pgSQL, you can use the CASE statement to perform conditional branching based on specific conditions. The CASE statement allows you to evaluate different conditions and execute different code blocks depending on the outcome of those conditions. It’s similar to the IF statement but provides more flexibility when you need to test multiple conditions….

In PostgreSQL’s PL/pgSQL, you can use the IF statement to conditionally execute a block of code based on a specified condition. The IF statement allows you to branch your code flow, executing different code blocks depending on whether the condition is true or false. Here’s the basic syntax of the IF statement: IF condition THEN…

A PL/pgSQL trigger is a block of PL/pgSQL code that is executed automatically in response to specific events on a table, such as INSERT, UPDATE, or DELETE operations. Triggers are often used to enforce data integrity, perform auditing, or automate complex data manipulation tasks. Here’s the basic structure of a PL/pgSQL trigger: CREATE TRIGGER trigger_name…

PL/pgSQL supports the use of cursors to retrieve and manipulate result sets from SQL queries in PostgreSQL database. Cursors are particularly useful when you need to work with large result sets or when you want to process rows one by one within a PL/pgSQL function or procedure. Here’s a basic overview of cursors in PL/pgSQL:…

PL/pgSQL functions are named blocks of code written in the PL/pgSQL procedural language in PostgreSQL database. These functions can accept parameters, perform calculations, execute database queries, and return values. PL/pgSQL is a powerful and flexible language for writing complex database logic and stored procedures. Here’s the basic structure of a PL/pgSQL function: CREATE OR REPLACE…

In PostgreSQL, a PL/pgSQL procedure is a named block of code written in the PL/pgSQL language that performs a specific task or set of tasks. Procedures are similar to functions, but they do not return values like functions do. Instead, they may perform operations within the database or manipulate data in some way. PL/pgSQL is…

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…