pod框架中t.column_name的含义是什么?

I am learning Pod framework(Version 1.14.7 this really bad because it is an old version) in WordPress. I can see in my code example that there is using some kind of codes that have t.business_approved. But I am wondering what does mean by t here. My codes are below.

$businesses = new Pod('businesses');
codesearch3 = "AND t.address_city = '$mycitycookie'";
$query_where = "(t.business_approved = '1' AND business_tab_1_content !='' $codesearch3)";
$businesses->findRecords('Order By statement', 3,$query_where);

I tried some googling and get to know that here businesses is pod name and address_city and business_approved are the column names for the pod.

But I can not understand what is doing t before business_approved. Would anyone please give me some information that can help me out to understand about t in pod framework?

So that appears to be an SQL query, and 't' would either be the name of, or an alias to, the table you are doing a query on.