Hey guys, I am taking my chances of posting a devel doubt on this list (couldn't find any other relevant list). I think I have spent too much time on this and need a fresh pair of eyes to look in it..
So this is my situation: 1. I have added a new field to RangeTblEntry (bool tablesample). 2. I have created a new executor node (this is to do system sampling [Ref: Query sampling thread]). In short, this new node goes over a table block by block, skipping some blocks as required. 3. Have made the appropriate changes to the parser+planner so that the information about a tablesample is passed from the parser to the executor. But the RangeTblEntry received by my executor node does not have the tablesample set, inspite of the fact that I do set it in parse_relation.c:addRangeTableEntry(). I have made the appropriate changes to copyfuncs.c, but still in vain.. Any help would be highly appreciated. I can send a diff if someone is interested. Thanks Varun ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
