Hi Tom, On Feb 20, 2018, at 10:54 PM, Tom Lane <tgl@xxxxxxxxxxxxx> wrote: > Well, the implicit coercions work in your favor in this particular case. Ah, I wasn’t aware of implicit coercion. Yes, that solves the problem perfectly, thanks. Out of curiosity, how does one read a numeric type from within a C extension (i.e. get a number value out of the Datum type)? I ask as I was unable to find an example and there are a few open questions on Stack Overflow (e.g. https://stackoverflow.com/questions/12588554/postgres-c-function-passing-returning-numerics). Thanks, Demitri
