雪花：在雪花 SQL 中，我将如何从用户视图中看到 select 的单个字段并放入 JSON 格式？

Question

I'm finding the snowflake documentation very challenging to follow and derive solutions.

I want to select a list of users from snowflake. I only need one column (any account login that matches an email address), and I need to put this into JSON format.

I do not want to select any other field except for 'name' (which in our case is an email address).

This should be easy, and maybe it is, but I cannot find any documentation that would lead to a solution.

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When I do a search on selecting users, I am taken to this page

https://docs.snowflake.com/en/sql-reference/sql/show-users.html <== no examples

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the command is 'show users;'

The problem with this is that:

1. I cannot select a single field using that command
2. I cannot select where like '%@%' (the simplest match for an account that looks like an email address)
3. I cannot put this into JSON format.

Ideally I would like to do is to select from a view.

With a search, I am led to a 'users view', but I see no examples on that page on how to select from it, and everything I try fails.

https://docs.snowflake.com/en/sql-reference/account-usage/users.html <== how do I select from this view?

I want to select from a view where the login contains '@' and then put into JSON format.

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I need JSON output that looks like the following:

{
 "users": [

    {"user": '<email_address>'},
    {"user": '<email_address>'},
    {"user": '<email_address>'},
    ...
    ]
}

---

Is it even possible to accomplish this?

Any help would be greatly appreciated.

Answer 1

Yes, it is definitily possible to achieve the exact output as requested.

RESULT_SCAN is used to get access of SHOW USERS resultset:

SHOW USERS;

SELECT OBJECT_CONSTRUCT('users', ARRAY_AGG(OBJECT_CONSTRUCT('user', "name")))
FROM TABLE(RESULT_SCAN(LAST_QUERY_ID())) 
WHERE "name" ILIKE '%@%';

Output: