Marketing Cloud Developers Certification Practice Test 2026 – Your All-in-One Guide to Exam Success!

Converting data types is supported in the SQL you run in Marketing Cloud, so you can shape values into the types your operations need. CAST(expression AS datatype) is the standard way to do this, and it’s explicit about what type you want. This helps ensure that comparisons, sorts, and joins behave predictably when source data may come in as strings, numbers, or dates.

For example, if a date is stored as text, you can write CAST(SubscribeDate AS DATE) to treat it as a date for date-based filtering or ordering. Casting numbers to text is also common when you need to concatenate or display values consistently, like CAST(SubscriberID AS VARCHAR(50)) AS SubscriberText.

CONVERT offers an alternative way to achieve similar conversions. In many SQL dialects, it takes a datatype and an expression (and sometimes a style parameter for formatting). You can use CONVERT to convert between types in situations where you’re following existing code patterns or prefer the syntax, such as CONVERT(VARCHAR(50), SomeNumber) to produce text from a numeric field.

Having both options gives you reliable tools to ensure data types align for comparisons, groupings, or formatting in outputs, which is why these functions are supported in the platform.