On Friday, October 16, 2015, Tom Lane <
tgl@sss.pgh.pa.us> wrote:
Anyway, I'm not planning to do much more work on this right now, but
I thought I'd throw it out there just to let people know that this seems
within reach. I'm curious to know how many people care, and how much.
+1
It's hard to quantify how much but look behind is a tool that I find occasion to use. My most recent need involved ensuring that the current position after processing two variable length matches is exactly n characters from the start of the string.
I don't have any immediate projects that would be refactored into a more pure SQL variation for having this feature so on that the strength is fairly low. But if you are going to do it then now, while it is fresh, would be the best time.
David J.