How to Use IIF in Microsoft Access Query [2026 Full Guide]

How to Use IIF in Microsoft Access Query In this video, we show you exactly how to use IIF in a Microsoft Access query to execute conditional logic and create dynamic calculations within your datasets. Implementing the Immediate If function allows database users to evaluate a specific expression and automatically return one value if the condition is true, and another if it is false. Mastering this conditional syntax is essential for transforming raw data into actionable reports, categorizing records on the fly, and building advanced business logic directly into your relational databases. Configuring this logical expression involves structuring a three-part statement within the query grid that defines your test condition, the true output parameter, and the false fallback parameter. We focus on proper syntax placement, referencing table fields correctly, and handling potential null values to ensure your conditional expressions execute flawlessly across all records without syntax errors. Technical Specs: Software: Microsoft Access; Feature: Query Design & Expressions How to Use IIF in Microsoft Access Query, Microsoft Access IIF function, conditional logic Access query, Immediate If expression Access, Microsoft Access, MS Access, query expression builder, logical functions MS Access, calculated fields Access query, database conditional formatting, dynamic query fields, Access query syntax guide, if then statement Access, database report automation, filter data with IIF