You can query data from non-SQL sources via SQL. If your data isn't from a SQL database, it's probably an array of objects. Retool lets you use SQL to query your data as if they were tables in a database. That means you can query the results of a REST API endpoint, or Google Sheets data, all via SQL.
Writing a query to transform JSON objects
If you have your array of JSON objects handy (eg. in apiData.data), you can query it via a Query JSON with SQL resource:
Filtering an array of objects using SQL
It's not _exactly_ SQL
Since the data isn't actually stored in a postgres database, some SQL might not work. If something isn't working exactly as expected, here are the docs:
https://github.com/agershun/alasql/wiki/Sql
https://github.com/agershun/alasql/wiki/SQL-99
https://github.com/agershun/alasql/wiki/SQL-keywords
select
*
from
{{ [{ id: 1, apples: 3 }, { id: 3, apples: 20 }] }}
where
apples > 5select
users.*, payments.*
from
{{ usersApi.data }} as users,
{{ paymentsApi.data }} as payments
where
users.id = payments.user_idData from SQL queries are NOT returned as an array of objects!
If you want to use the data as an array of objects, you can use the helper function formatDataAsArray to do so like below.
{{ formatDataAsArray(sqlQuery.data) }}
select
users.*, payments.*
from
{{ formatDataAsArray(dbquery1.data) }} as users,
{{ formatDataAsArray(dbquery2.data) }} as payments
where
users.id = payments.user_id