On 3/7/19 10:08 AM, Alvaro Herrera wrote: > I just pushed this one to pg12 only: >> xmltable-xmlexists-passing-mechanisms-3.patch
Thanks! > I removed the words "first appears in SQL:2006" from the new doc > paragraph; we used to have similar phrases scattered here and there but > were removed years ago, on the grounds that only the most recent version > is relevant (I couldn't find the commit, though). In case there are similar qualifiers in the other patches (especially the -docfix one, there are several), while respecting that general principle, I would offer that there might be an argument for bending it some here ... ... one of the main things challenging intuition and expectation in the SQL/XML part of the standard is that there were radical changes to the 'XML' data type and the underlying data model between :2003 and :2006, and most of what's in PostgreSQL was implemented to :2003 and still conforms to that. (Being therefore, already, a bit of an exception to the "only the most recent version is relevant" principle.) So there could be good reason here to call out the distinctions when they matter here, even if in other areas of the doc the practice is not to call them out. -Chap
