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On Fri, Jun 28, 2013 at 11:17 AM, Tim Hill <> wrote:
No-one has answered my original question: How can I write a CLEAN C library that emits a SQL rowset that might include NULL values? Without "empty", I cannot see a clean way to do this.

But then your library would define a null constant, and you would use that. That's how the same problem is sorted with JSON encoding.