The SQL While Loop is used to repeat a block of statements for a given number of times until the given condition is False. SQL Server While loop starts with the condition, and if the condition result is True, then statements inside the BEGIN..END block will execute. Otherwise, it won’t execute.

Can you use 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 a loop in SQL?

DECLARE @cnt INT = 0; WHILE @cnt < 10 BEGIN PRINT ‘Inside FOR LOOP’; SET @cnt = @cnt + 1; END; PRINT ‘Done FOR LOOP’; If you know, you need to complete first iteration of loop anyway, then you can try DO.. WHILE or REPEAT..

What is Do While loop in SQL with example?

A while loop will check the condition first and then executes the block of Sql Statements within it as along as the condition evaluates to true. Example: Basic while loop example. The below while loop executes the statements within it 4 times.

How do you run a while loop in SQL?

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.

How do you run a while loop in SQL Server?

How do you break a while loop in SQL Server?

SQL Server BREAK statement overview 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 Do WHILE loop in SQL with example?

How do you run a WHILE loop in SQL Server?

Do While loop syntax in SQL Server?

UNTIL version of SQL server.

  • DO.. WHILE Loop.
  • REPEAT..UNTIL Loop. DECLARE @X INT = 1; WAY: — Here the REPEAT statement PRINT @X; SET @X += 1; IFNOT(@X > 10) GOTO WAY;
  • FOR Loop. DECLARE @cnt INT = 0; WHILE @cnt < 10 BEGIN PRINT ‘Inside FOR LOOP’; SET @cnt = @cnt + 1; END; PRINT ‘Done FOR LOOP’;

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.

What type of loop is the while loop?

A do-while loop is a kind of loop, which is a kind of control statement. It is a loop with the test at the bottom, rather than the more usual test at the top.

Do WHILE loop syntax?

Contrast with the while loop, which tests the condition before the code within the block is executed, the do-while loop is an exit-condition loop. This means that the code must always be executed first and then the expression or test condition is evaluated. If it is true, the code executes the body of the loop again.

Do WHILE loop uses?

A for loop is used where you know at compile time how many times this loop will execute. A while loop is normally used in a scenario where you don’t know how many times a loop will actually execute at runtime. A do-while loop is used where your loop should execute at least one time.

How to loop in SQL query?

Looping statements are used to perform a certain task repetitively. There are many looping statements available in SQL such as while loop, looping using the simple loop and exit keywords and labels, etc. However, there is no presence of functionality to use for loop in SQL.