Re: Cast json array to postgres array and preserve order of elements

On 5/10/20 8:21 AM, otar shavadze wrote:
> When I want t to convert json array into postgres array, I do:
>
>     with t(j) as(
>         select '{"my_arr":[3,1,2]}'::json
>     )
>     SELECT ARRAY(SELECT json_array_elements_text(j->'my_arr')) from t
>
>
> It works like a charm and I never noticed any problem, but I'm asking
> here just to make sure,  order of elements will be preserved always? 
> Is that guaranteed in above example, or not?
>
>


yes. The order is significant and the elements are produced in array order.


cheers


andrew


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Andrew Dunstan                https://www.2ndQuadrant.com
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