![]() ![]() 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 statements that we want to execute on a repetitive basis are included in the section, and END LOOP marks the ending of the for loop working. And the LOOP keyword marks the beginning of the for loop’s body that will be executed each time the loop will be iterated. The step value is the stepping amount that specifies how much value is to be skipped from the start value till the end value while iterating. This counting variable has START VALUE and an END VALUE as its range for which it will iterate. ![]() It can be declared in the for loop statement itself. įor loop contains a counting variable which is not necessary to declare outside the for a loop. Other than this, you should be aware of the arrays in PostgreSQL.įOR IN. To understand the examples, you need to have basic knowledge of PostgreSQL functions and CRUD operation statements like SELECT, UPDATE, INSERT and DELETE. Another type of looping statement is the loop, and the last one is the while loop. ![]() We can use a plain loop with the EXIT WHEN statement to stop looping. In PostgreSQL, we have various types of looping facilities. Hadoop, Data Science, Statistics & others Types of Loops ![]()
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