pá 15. 3. 2019 v 17:16 odesílatel Tom Lane <t...@sss.pgh.pa.us> napsal:
> Chapman Flack <c...@anastigmatix.net> writes: > > So the proposal seems roughly equivalent to making string_to_array's > > second parameter optional default null, and array_to_string's second > > parameter optional default ''. > > In that case why bother? It'll just create a cross-version compatibility > hazard for next-to-no keystroke savings. If the cases were so common > that they could be argued to be sane "default" behavior, I might feel > differently --- but if you were asked in a vacuum what the default > delimiters ought to be, I don't think you'd say "no delimiter". > My motivation is following - sometimes I need to convert string to array of chars. Using NULL as separator is possible, but it is not intuitive. When you use string_to_array function without separator, then only one possible semantic is there - separation by chars. I understand so there is a possible collision and possible meaning of missing parameter like default value. But in this case this meaning, semantic is not practical. Regards Pavel > regards, tom lane >
