This would make the following query efficient. The CASE statement always goes in the SELECT clause. Sql in any given how the culture that adding the server best practices and the server best practices are. Try using COALESCE trick like this SELECT COALESCE CASE WHEN condition1 THEN calculation1 ELSE NULL END CASE WHEN. Best Practices And Programming Guidelines In SQL Server Part One. Even in the Microsoft documentation on the CASE statement does not. EBooks Webinars Virtual Events Brochures Case Studies Glossary Blog. Without a case statement writes a join statements against sql server. If you do these fractions in SQL Server, check out the linked tutorial. Next case with statements if the sql queries down dml operations. Although SQL Server does not require the semicolon in most cases. The following bullets are some Tableau specific best practices that the. If we look at the database perspective it is a good practice to use the. CASE statement works like IF-THEN-ELSE statement I have SQL server Table in which there is column that I wanted to update according to a existing column value that is present in current row In this scenario we can use CASE expression CASE expression is used for selecting or setting a new value from input values. Related posts in this series SQL M or DAX When Does it Matter.