On 3/17/15 8:06 PM, Alvaro Herrera wrote:
My main question regarding this patch is whether the behavior with MD arrays is useful at all. Suppose I give it this:alvherre=# select array_offset('{{{1,2},{3,4},{5,6}},{{2,3},{4,5},{6,7}}}', 3); array_offset -------------- 3 (1 fila) What can I do with the "3" value it returned? Certainly not use it as an offset to get a slice of the original array. The only thing that seems sensible to me here is to reject the whole thing with an error, that is, only accept 1-D arrays here. We can later extend the function by allowing higher dimensionality as long as the second argument is an array one dimension less than the first argument. But if we allow the case on its appearance, it's going to be difficult to change the behavior later.
+1
Has a case been made for the current behavior?
Not that I remember. There was discussion about how this should properly support MD arrays.
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