Quicksight custom query postgresql functions

问题

I'm trying to create a DataSet for a Quicksight analysis. I'm using a custom query on a Postgresql Data Source.

Problem comes whenever I use Postgresql functions inside my query. The same query does, in fact, work on IntelliJ DataGrip and PgAdmin, for example, but I get a pretty unexpected error that states as follows:

QuickSight could not generate any output column after applying transformation. Check transform(s) and try again.

SELECT
    users.name AS "User",
    accounts.id AS "Account ID",
    groups.name AS "Group",
    account_balances.balance AS "Account Balance",
    (
        SELECT
            account_balances.balance
        FROM
            account_balances
        WHERE
            account_balances.account_id = (
                SELECT
                    accounts.id
                FROM
                    accounts
                WHERE
                    accounts.user_id = users.id
                AND
                    accounts.account_type_id = 11
            )
    ) AS "D Account Balance",
    (
        SELECT
            decimal_value
        FROM
            user_custom_field_values
        WHERE
            user_custom_field_values.field_id = (
                SELECT
                    user_custom_fields.id
                FROM
                    user_custom_fields
                WHERE
                    user_custom_fields.internal_name = 'capacity'
            )
        AND
            owner_id = users.id
    ) AS "Capacity",
    (
        SELECT
            decimal_value
        FROM
            user_custom_field_values
        WHERE
            user_custom_field_values.field_id = (
                SELECT
                    user_custom_fields.id
                FROM
                    user_custom_fields
                WHERE
                    user_custom_fields.internal_name = 'Turnover'
            )
        AND
            owner_id = users.id
    ) AS "Turnover",
    (
        SELECT value
            FROM
                 user_custom_field_possible_values
            WHERE
                id in (
                    SELECT
                        possible_value_id
                    FROM
                         user_enum_values
                    WHERE
                        owner_id in (
                            SELECT
                                user_custom_field_values.id
                            FROM
                                user_custom_field_values
                            JOIN
                                user_custom_fields ON user_custom_fields.id=user_custom_field_values.field_id
                            WHERE
                                owner_id = users.id
                            AND
                                user_custom_fields.internal_name = 'contractType'
                        )
                )
        LIMIT 1
    ) AS "Contract Type",
    (
        SELECT
            COUNT(id)
        FROM
            ads
        WHERE
            owner_id = users.id
        AND
            (ads.creation_date BETWEEN NOW() - interval '6 months' AND NOW())
    ) AS "ADs last 6 months",
    (
        SELECT
            SUM(transfers.amount)
        FROM
            transfers
        WHERE
            transfers.to_id = accounts.id
        AND
            transfers.chargeback_of_id IS NULL
        AND
            transfers.charged_back_by_id IS NULL
        AND
            (transfers.date BETWEEN NOW() - interval '3 months' AND NOW())
    ) AS "Sells last 3 months",
    (
        SELECT
            SUM(transfers.amount)
        FROM
            transfers
        WHERE
            transfers.to_id = accounts.id
        AND
            transfers.chargeback_of_id IS NULL
        AND
            transfers.charged_back_by_id IS NULL
        AND
            (transfers.date BETWEEN NOW() - interval '6 months' AND NOW())
    ) AS "Sells last 6 months",
    (
        SELECT
            SUM(transfers.amount)
        FROM
            transfers
        WHERE
            transfers.to_id = accounts.id
        AND
            transfers.chargeback_of_id IS NULL
        AND
            transfers.charged_back_by_id IS NULL
        AND
            (transfers.date BETWEEN NOW() - interval '12 months' AND NOW())
    ) AS "Sells last years",
    (
        SELECT
            SUM(transfers.amount)
        FROM
            transfers
        WHERE
            transfers.to_id = accounts.id
        AND
            transfers.chargeback_of_id IS NULL
        AND
            transfers.charged_back_by_id IS NULL
    ) AS "Sells",
    (
        SELECT
            SUM(transfers.amount)
        FROM
            transfers
        WHERE
            transfers.from_id = accounts.id
        AND
            transfers.chargeback_of_id IS NULL
        AND
            transfers.charged_back_by_id IS NULL
        AND
            (transfers.date BETWEEN NOW() - interval '3 months' AND NOW())
    ) AS "Purchases last 3 months",
    (
        SELECT
            SUM(transfers.amount)
        FROM
            transfers
        WHERE
            transfers.from_id = accounts.id
        AND
            transfers.chargeback_of_id IS NULL
        AND
            transfers.charged_back_by_id IS NULL
        AND
            (transfers.date BETWEEN NOW() - interval '6 months' AND NOW())
    ) AS "Purchases last 6 months",
    (
        SELECT
            SUM(transfers.amount)
        FROM
            transfers
        WHERE
            transfers.from_id = accounts.id
        AND
            transfers.chargeback_of_id IS NULL
        AND
            transfers.charged_back_by_id IS NULL
        AND
            (transfers.date BETWEEN NOW() - interval '12 months' AND NOW())
    ) AS "Purchases last year",
    (
        SELECT
            SUM(transfers.amount)
        FROM
            transfers
        WHERE
            transfers.from_id = accounts.id
        AND
            transfers.chargeback_of_id IS NULL
        AND
            transfers.charged_back_by_id IS NULL
    ) AS "Purchases",
    (
        SELECT
            account_limit_logs.credit_limit
        FROM
            account_limit_logs
        WHERE
            account_limit_logs.account_id = accounts.id
        ORDER BY
            account_limit_logs.id DESC
        LIMIT 1
    ) AS "Account Limit"
FROM
    users
JOIN
    accounts ON accounts.user_id = users.id
JOIN
    groups ON groups.id = users.user_group_id
JOIN
    account_balances ON accounts.id = account_balances.account_id
WHERE
    accounts.account_type_id = 4

Problem seems to be the - interval 'fooBar' part. Without that, the query goes smooth.

Anybody with a deep enough knowledge of AWS Quicksight and its secrets, care to help?

Even a different SQL solution to obtain the same result would be acceptable.

Thanks!

来源：https://stackoverflow.com/questions/58077766/quicksight-custom-query-postgresql-functions