title: Catching errors in MS Access
body: <p>I am a beginner with MS Access and I am having some issues. I have created a query with 2 different dates (say x and y) and then a formula to calculate the days between these two dates - column C. I am now looking to only pull through results where the criteria of column c is greater than 30, however it is creating an error as some of the dates in x and y are missing at table level. Is there a way to catch this error before the query? For example, the Excel equivalent of iferror(&quot;-&quot;).</p>