WHILE ... Loops in SQL Server Transact-SQL
How to execute statements in loops in SQL Server Transact-SQL? How to use WHILE ... loops?
You can use WHILE ... statements to execute statements in loops in Transact-SQL using these syntaxes:
-- Loop with a single statement WHILE condition statement -- Loop with a statement block WHILE condition -- statement_block BEGIN ... statements ... END
When a WHILE ... loop statement is executed, the system will:
Here is an example on how to use WHILE ... loop statements:
DECLARE @count INT = 1, @sum INT = 0; WHILE @count <= 10 BEGIN SET @sum = @sum + @count; SET @count = @count+1; END PRINT 'Sum of 1 to 10: ' + CAST(@sum AS CHAR);
Here is another example of WHILE ... loop statement:
-- Counting number of days in 2000 DECLARE @date DATETIME; DECLARE @count INT; SET @date = '2000-01-01'; SET @count = 0; WHILE DATEPART(YEAR, @date) = 2000 BEGIN SET @count = @count + 1; SET @date = DATEADD(DAY, 1, @date); END SELECT @count; 366 -- 2000 is a leap year!
2017-01-11, 283👍, 0💬
How do you know if SQL Server is running on your local system in SQL Server? After installing SQL Se...
How To Select Some Specific Columns from a Table in a Query in SQL Server? If you want explicitly te...
What Happens If the Imported Table Already Exists in Oracle? If the import process tries to import a...
How to download and install Microsoft SQL Server Management Studio Express in SQL Server? Microsoft ...
How to run Queries with SQL Server Management Studio Express in SQL Server? 1. Launch and connect SQ...