On 4/30/15 6:44 PM, Tom Lane wrote:
There isn't any such thing as a genuine SQL NULL argument; the examples you provided are just text strings, not SQL NULLs. In order to make them be actual nulls, we would have to redefine the arguments as being expressions of some sort, which is problematic for backwards-compatibility reasons. It also seems like rather a lot of new mechanism to add for something with (evidently) near-zero user demand.
Ahh, I thought the array started life as an actual array, not char **. So yeah, not nearly as easy to fix. :(
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