Why is JSONB field automatically cast as TEXT?

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От Ben Uphoff
Тема Why is JSONB field automatically cast as TEXT?
Дата
Msg-id AE11EB59-2FAC-4BD6-ABE0-BE40D5131CE4@villagemd.com
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Ответы Re: Why is JSONB field automatically cast as TEXT?
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First post here at PostgreSQL; please forgive any etiquette mistakes…

 

I have a query that extracts a field from a JSONB column, e.g.:

 

SELECT (((mytable.ajsonbcolumn -> ‘somedata’) -> ‘nested’) ->> ‘first_name’) AS fname FROM mytable

 

When I save it into a view, PostgreSQL transforms it thusly:

 

SELECT (((mytable.ajsonbcolumn -> ‘somedata’::text) -> ‘nested’::text) ->> ‘first_name’::text) AS fname FROM mytable

 

(note the ::text casts).

 

Why does it do this? It seems unnecessary and pollutes my SQL with a ton of extra text.

 

Thanks for your thoughts. -Ben

 

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