Making a Query SARGable

Haripriya Naidu explains SARGability:

Having the right index is helpful, but are you using the predicate (WHERE clause) correctly to make efficient use of that index?

This is where the term SARGable comes into play. SARGable stands for Search ARGumentable. If SQL Server is able to limit the search space while evaluating the predicates and can seek right at the page(s) to get the values, then it is SARGable.

Read on for an explanation of why this is important, as well as several examples of what is SARGable versus what isn’t. The most important thing about SARGability is that you pronounce it like “Sarge” and not “sarg.”