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Re: array_length of an empty array

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John R Pierce <pierce@xxxxxxxxxxxx> writes:
> hmmm.    array[]::integer[]    is an empty array, {}, eg an array with 
> zero elements

> but array_length(array[]::integer[])   is NULL rather than zero.    this 
> seems counterintuitive.

IIRC, there are a whole bunch of questionable behaviors around empty
arrays.  Somebody should go through the whole list of array-related
functions and come up with a coherent proposal for fixing all of them.

			regards, tom lane

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