How do you run a loop in PostgreSQL?

How do you run a loop in PostgreSQL?

The syntax of the for loop statement to iterate over a result set of a dynamic query: [ <> ] for row in execute query_expression [ using query_param [, ] ] loop statements end loop [ label ];

How do you declare a loop in PL SQL?

Syntax

1. The initial step is executed first, and only once. This step allows you to declare and initialize any loop control variables.
2. Next, the condition, i.e., initial_value ..
3. After the body of the for loop executes, the value of the counter variable is increased or decreased.
4. The condition is now evaluated again.

How to write a loop statement in PostgreSQL?

Introduction to PL/pgSQL Loop statement. The loop defines an unconditional loop that executes a block of code repeatedly until terminated by an exit or return statement. The following illustrates the syntax of the loop statement: < > loop statements; end loop;

How are loop statements defined in PL / pgSQL?

Introduction to PL/pgSQL Loop statement The loop defines an unconditional loop that executes a block of code repeatedly until terminated by an exit or return statement. The following illustrates the syntax of the loop statement: < > loop statements; end loop;

Which is the termination condition in the PostgreSQL loop?

The condition defined in the LOOP is termed as the termination condition, which the PostgreSQL evaluates after the first execution of the condition defined. And then, depending upon the condition’s evaluation result, it executes the block of the LOOP body.

When to use reverse in PostgreSQL for loop?

REVERSE is the optional parameter which, when specified, the counting variable will be decremented while iterating instead of incrementing each time the iteration is done. The for loop can be placed inside a certain function’s body, and this function can be called whenever we have to execute the for loop defined by us.