How do you write a while loop in SQL?

The while loop in SQL begins with the WHILE keyword followed by the condition which returns a Boolean value i.e. True or False. The body of the while loop keeps executing unless the condition returns false. The body of a while loop in SQL starts with a BEGIN block and ends with an END block.

How do you write a loop in SQL?

The Basic Syntax of a WHILE Loop

  1. –This variable keeps track of how many times the loop has run.
  2. DECLARE @Counter INT.
  3. SET @Counter = 0.
  4. –The loop begins by checking a condition is met.
  5. –Here we check that the counter has not exceeded 10.
  6. WHILE @Counter <= 10.
  7. –When the condition is met, the loop is entered.

Is there a for loop in SQL?

In SQL Server, there is no FOR LOOP. However, you simulate the FOR LOOP using the WHILE LOOP.

How do you write conditions in a while loop?

The condition check can be moved below the loop body using the do.. while syntax: do { // loop body } while (condition); The loop will first execute the body, then check the condition, and, while it’s truthy, execute it again and again.

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How is a while loop written?

Start the while loop by writing a do while command.



The syntax is different in various computer languages. The while command usually includes the words “do while,” along with other minimal code.

What are 3 types of loops in SQL?

Explain Different Types of Loops in PL/SQL

  • The simple or infinite loop.
  • The FOR loop.
  • The WHILE loop.

How do you break a while loop in SQL?

To exit the current iteration of a loop, you use the BREAK statement. In this syntax, the BREAK statement exit the WHILE loop immediately once the condition specified in the IF statement is met. All the statements between the BREAK and END keywords are skipped.

What is loop in PL SQL?

The PL/SQL loops are used to repeat the execution of one or more statements for specified number of times. These are also known as iterative control statements. Syntax for a basic loop: LOOP.

How do I do a WHILE loop in SQL Server?

SQL While loop syntax



The while loop in SQL begins with the WHILE keyword followed by the condition which returns a Boolean value i.e. True or False. The body of the while loop keeps executing unless the condition returns false. The body of a while loop in SQL starts with a BEGIN block and ends with an END block.

Which is better cursor or WHILE loop in SQL Server?

While SQL While loop is quicker than a cursor, reason found that cursor is defined by DECLARE CURSOR. Every emphasis of the loop will be executed inside system memory and consuming required server assets.

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What is while loop example?

A “While” Loop is used to repeat a specific block of code an unknown number of times, until a condition is met. For example, if we want to ask a user for a number between 1 and 10, we don’t know how many times the user may enter a larger number, so we keep asking “while the number is not between 1 and 10”.

What is loop example?

A loop is used for executing a block of statements repeatedly until a particular condition is satisfied. For example, when you are displaying number from 1 to 100 you may want set the value of a variable to 1 and display it 100 times, increasing its value by 1 on each loop iteration.

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