I have a report and I am trying to understand the query written in there. This is one of the table which has been manually created and have columns "max" and "min" along with others. I dont understand what the below queries are doing. in one step there is a filtering with max as no null and then max as null and then there is merging but there is no 2nd table defined.
I dont know what to say to you.. I know that there is merging happening, but as I mentioned in the question, i didnt get how and why the filtering is happening on max columns once for null and then without null and why and how this is getting merged.