(immediately revealed by shardman's tests)

Codecov Report

Merging#171 intonext willincrease coverage by<.01%.
The diff coverage is100%.

@@            Coverage Diff             @@##             next     #171      +/-   ##==========================================+ Coverage   90.05%   90.05%   +<.01%==========================================  Files          40       40                Lines        6465     6468       +3     ==========================================+ Hits         5822     5825       +3  Misses        643      643

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I'll look into this tomorrow. We should add a pythonic test for this as well.

Actually the test is already there, it's just usually not executed due to missingpostgres_fdw.

I pushed roughly the same piece of code tonext. Thanks!