Обсуждение: BUG #14239: Array of array type reporting

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On 7/9/16 12:57 PM, yrashk@gmail.com wrote:
> Is there any reason why schedule text[][] is reported as text[]?

There is no such thing as text[][].  I'm not sure why it's accepted
(perhaps backward compatibility), but PostgreSQL only supports one level
of array-ness, which can, however, be multidimensional.

So this is nothing to worry about.

--
Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

On Sat, Jul  9, 2016 at 03:03:34PM -0400, Peter Eisentraut wrote:
> On 7/9/16 12:57 PM, yrashk@gmail.com wrote:
> >Is there any reason why schedule text[][] is reported as text[]?
>
> There is no such thing as text[][].  I'm not sure why it's accepted (perhaps
> backward compatibility), but PostgreSQL only supports one level of
> array-ness, which can, however, be multidimensional.
>
> So this is nothing to worry about.

Yeah, arrays basically don't store any supplied dimmensions:

    test=> CREATE TABLE test(x TEXT[3]);
    CREATE TABLE

    test=> \d test
         Table "public.test"
     Column |  Type  | Modifiers
    --------+--------+-----------
     x      | text[] |

                  ^^

--
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

+ As you are, so once was I. As I am, so you will be. +
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