Using COUNT will have to touch every single row in the table , the EXISTS only. It will be as fast as building up a while loop and much easier to maintain over. SQL Server loop - how do I loop through a set of.
Loop through table by row T-SQL antwoorden jan. Meer resultaten van stackoverflow. A second method is to use the min function to walk a table one row at a time.
Just as a curiosity (since the question states T-SQL ) it is also possible. How to loop through tables dynamically and INSERT INTO a. Improve performance of while loop for INSERT INTO. To understand the looping of the table records in the above listed scenarios, let us first create a . Fetching the desired records in cursor and check in the while loop until we get . This article explains the While loop , a table and variable combination with an example. For better, quicker on T-SQL questions, click on the . WHILE statement - Condition to begin and continue data processing.
How to architect a WHILE loop using table variable?
The imported data may be seen immediately below and the table.