Expressing a result set as an array (and vice versa)?

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От Don Maier
Тема Expressing a result set as an array (and vice versa)?
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Msg-id F3E0C44C-6118-41C6-AC71-2B19258F4F07@genome.stanford.edu
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Ответы Re: Expressing a result set as an array (and vice versa)?  (PFC <lists@peufeu.com>)
Re: Expressing a result set as an array (and vice versa)?  (george young <gry@ll.mit.edu>)
Список pgsql-sql
Good day,

Is it possible to construct an array from an appropriate select  
expression that generates a result set of unknown cardinality?
To focus on the simple case:  Is it possible to construct a one- 
dimensional array from a select of a single column in a table with an  
unknown number of rows?

Conversely, is it possible to construct a (single column) result set  
from a select expression on a one-dimensional array with an unknown  
number of elements?

Thanks for any hints!

Regards,
Don Maier




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