I'm trying to build a blog on an existing site by looking at the dummy Corporate Site. The Corporate Site has a "Blog posts repeater" with properties containing SQL like:

('{%ToInt(tagid, "")%}' = 0 AND '{%tagname%}'='') OR (DocumentID IN (SELECT DocumentID FROM CMS_DocumentTag WHERE TagID = {%ToInt(tagid, "")%} )) OR (DocumentID IN (SELECT DocumentID FROM CMS_DocumentTag WHERE TagID IN (SELECT TagID FROM CMS_Tag WHERE TagName = '{%tagname%}' AND TagGroupID = {%ToInt(groupid, "")%} )))

Am I correct in thinking that I need to memorize Kentico's SQL table structure in order to make a simple blog? Someone please tell me that there's an easier way of doing this.