Re: Doubt about query

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От David G. Johnston
Тема Re: Doubt about query
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Msg-id CAKFQuwakYSDBzKQPyodvNYJNRUuAO-2bO56soOy66=JeG4J+Gg@mail.gmail.com
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Ответ на Re: Doubt about query  (Bianca Stephani <bianca.stephani@gmail.com>)
Ответы Re: Doubt about query  (Bianca Stephani <bianca.stephani@gmail.com>)
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On Fri, Jun 5, 2015 at 2:00 PM, Bianca Stephani <bianca.stephani@gmail.com> wrote:
Thanks for answering. I've already tryied that. When I do what you've said, i get this:

[{"array" => "{1,2,3,4,5}"}, {"array" => "6,7,8,9,10}"}...]

When what i want is this: [1,2,3,4,5,6,7,8,9,19] 


​Please don't top-post...

Nowhere are you mentioning JSON but I presume what you are trying to do involves that...

I'm not sure how you expect to the 10 numbers when you only want to concatenate 5 columns...

You should share what you have done and the sample data you are using.

SELECT array_agg(unnest) AS row_agg FROM (
SELECT unnest(col_agg) FROM (
SELECT ARRAY[...] AS col_agg FROM ...
)));

​That gets you a single array with all the rows and columns in the same dimension.​

David J.
​

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