Re: Json table/column design question - Mailing list pgsql-general

From David G. Johnston
Subject Re: Json table/column design question
Date
Msg-id CAKFQuwbDLizRmcrc5=e5AMdsgZ1DrxBNuvrudcrCdeHaOKDPZw@mail.gmail.com
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In response to Json table/column design question  (Skorpeo Skorpeo <skorpeo11@gmail.com>)
List pgsql-general
On Wednesday, May 22, 2024, Skorpeo Skorpeo <skorpeo11@gmail.com> wrote:
Hi,

I was wondering if having unrelated columns in a table is a sound approach when using json.  In other words, if I have two collections of unrelated json objects, for example "Users" and "Inventory", would it be ok to have one table with a "Users" column and a "Inventory" column?  My concern is that from a row perspective the columns could be different lengths, such as more inventory items as users.  And for any given row the data in one column would have no relation to another column. I would only query a single column at a time.

Would this approach be ok or are there pitfalls such that it would be advantageous/recommended to have a separate table for each column?

Any thoughts/inputs are greatly appreciated.

What do you expect to gain?  The relational model and normalization has earned its longevity, I suggest you learn and apply those techniques.  Which generally means avoiding json as a data type. (The single table abomination you describe isn’t even really on the table - you did a fine job arguing against it yourself.)

David J.

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