I wrote: > "David G. Johnston" <david.g.johnston@xxxxxxxxx> writes: >> How about just erroring out? > Hm, yeah, inserting a FEATURE_NOT_SUPPORTED error might be an > appropriate amount of effort. When I looked into this more closely, it turns out that in v10/HEAD it takes less code to fix it than to throw an error ;-). So I just fixed it and added some regression tests. But 9.6 blows up somewhere in the executor, and it didn't seem worth trying to deal with that. So in 9.4-9.6 I just made the case throw an error. regards, tom lane
