Скачать или смотреть sql server interview questions and answers using IIF Query shorthand case expression

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sql server interview questions and answers using IIF Query shorthand case expression

During SQL Server interviews, candidates are often asked about conditional expressions and their practical application. Using the IIF function or shorthand CASE expression can help simplify and streamline such scenarios. IIF is a concise way to express conditional logic, particularly for simple binary decisions. It takes three arguments: a condition to evaluate, a value to return if the condition is true, and a value to return if the condition is false. On the other hand, the shorthand CASE expression offers more flexibility, allowing multiple conditions and results. By showcasing proficiency with both IIF and the shorthand CASE expression, candidates demonstrate their ability to write efficient and readable SQL queries, essential for data manipulation and reporting in SQL Server. In interviews, explaining these functions and offering examples of their real-world usage can impress potential employers and highlight your SQL expertise.

Here is the another sql server important most asked interview question hide the number of affected rows message or set nocount on or off

To hide the number of affected rows message in SQL, you can use the `SET NOCOUNT ON` statement. This prevents SQL Server from returning the "X rows affected" message after executing statements, improving query performance and reducing unnecessary output in the result set.