Wells Oliver <wells.oliver@xxxxxxxxx> writes: > Out of curiosity, does the value of temp_buffers apply to how CTEs are > generated under the hood? No. Intermediate results within a query (whether CTE or not) might get spilled to disk in a "temporary file", but that's a distinct mechanism from temp tables, which is what temp_buffers applies to. Bruce's nearby answer explains how you can control/monitor temp files, but he didn't actually answer your question ;-) regards, tom lane