Nov 18, 2025 · Unless a statement block is used, the IF or ELSE condition can affect the performance of only one Transact-SQL statement. To define a statement block, use the …

May 28, 2024 · We can use either a CASE statement or an IIF () function to implement IF-THEN logic in SQL. In this tutorial, we’ll explore how to implement IF-THEN logic in SQL across …

Sep 15, 2008 · If you need to write just one condition, then iif() is sufficient, however if you want to write multiple iif() conditions within one statement then you will have to use `case' statement …

Jul 23, 2025 · By using IF...ELSE within SQL statements we can categorize data, apply conditional transformations, and implement business logic directly in our queries. In this article, …

Sep 12, 2022 · Learn how to build conditional logic when writing T-SQL code using IF, BEGIN, END, ELSE, and ELSEIF logic.

This is most easily accomplished in all versions of SQL Server using the CASE statement, which acts as a logical IF...THEN...ELSE expression and returns various values depending on the …

Dec 9, 2025 · While SQL lacks a native IF...THEN statement in the SELECT clause (unlike some programming languages), the CASE statement fills this gap, enabling powerful conditional …

Jul 31, 2025 · An 'IF THEN' statement in SQL is a conditional control flow mechanism that allows you to execute specific codes based on whether a specified condition is met. It's commonly …

Nov 30, 2025 · Discover how to use IF statements in SQL to control query logic, manipulate data, and retrieve results efficiently.

Jul 21, 2023 · In this article, you’ll learn the fundamentals and advanced usage of IF-THEN logic in SQL Server. We’ll walk through syntax examples, highlight common pitfalls, and share best …