对子查询求和并按不同列分组

Question

as the title says, i need help on combining same result set, it's kinda hard to explain, so here's my code:

SELECT DISTINCT a.liability_number AS CIF
    ,CASE 
        WHEN b.SECTOR = '1001'
            THEN 'I'
        WHEN b.SECTOR = '2001'
            THEN 'C'
        END AS [Customer Type]
    ,(
        SELECT ROUND(SUM(internal_amount) / 1000000, 0)
        FROM "limit"
        WHERE INSERT_DATE = '20200619'
            AND liability_number = a.liability_number
        ) AS [Previous Limit]
    ,(
        SELECT ROUND(SUM(internal_amount) / 1000000, 0)
        FROM "limit"
        WHERE INSERT_DATE = '20200626'
            AND liability_number = a.liability_number
        ) AS [Current Limit]
    ,ABS(ROUND((
                (
                    SELECT SUM(internal_amount)
                    FROM "limit"
                    WHERE INSERT_DATE = '20200619'
                        AND liability_number = a.liability_number
                    ) - (
                    SELECT SUM(internal_amount)
                    FROM "limit"
                    WHERE INSERT_DATE = '20200626'
                        AND liability_number = a.liability_number
                    )
                ) / 1000000, 0)) AS [Limit Difference]
    ,(
        SELECT ABS(ROUND(SUM(total_os) / 1000000, 0))
        FROM "limit"
        WHERE INSERT_DATE = '20200619'
            AND liability_number = a.liability_number
        ) + (
        SELECT ABS(ROUND(online_actual_bal / 1000000, 0))
        FROM account
        WHERE insert_date = '20200619'
            AND account_number = a.account
        ) AS [Previous Outstanding]
    ,(
        SELECT ABS(ROUND(SUM(total_os) / 1000000, 0))
        FROM "limit"
        WHERE INSERT_DATE = '20200626'
            AND liability_number = a.liability_number
        ) + (
        SELECT ABS(ROUND(online_actual_bal / 1000000, 0))
        FROM account
        WHERE insert_date = '20200626'
            AND account_number = a.account
        ) AS [Current Outstanding]
    ,(
        SELECT ABS(ROUND(SUM(total_os) / 1000000, 0))
        FROM "limit"
        WHERE INSERT_DATE = '20200626'
            AND liability_number = a.liability_number
        ) + (
        SELECT ABS(ROUND(online_actual_bal / 1000000, 0))
        FROM account
        WHERE insert_date = '20200626'
            AND account_number = a.account
        ) - (
        SELECT ABS(ROUND(SUM(total_os) / 1000000, 0))
        FROM "limit"
        WHERE INSERT_DATE = '20200619'
            AND liability_number = a.liability_number
        ) + (
        SELECT ABS(ROUND(online_actual_bal / 1000000, 0))
        FROM account
        WHERE insert_date = '20200619'
            AND account_number = a.account
        ) AS [Outstanding Difference]
    ,(
        SELECT COUNT(RECID)
        FROM "limit"
        WHERE INSERT_DATE = '20200619'
            AND liability_number = a.liability_number
        ) AS [Previous Loan Count]
    ,(
        SELECT COUNT(RECID)
        FROM "limit"
        WHERE INSERT_DATE = '20200626'
            AND liability_number = a.liability_number
        ) AS [Current Loan Count]
FROM "limit" a
JOIN customer b ON a.INSERT_DATE = b.INSERT_DATE
    AND a.liability_number = b.customer_no
WHERE a.INSERT_DATE = '20200626'
    AND a.l_tgl_loan >= '20200622'
    AND a.l_status_fas IN (
        '2'
        ,'3'
        ,'5'
        ,'17'
        )
ORDER BY a.LIABILITY_NUMBER;

and here's the result:

what i want is:

am trying to sum the subquery, and do group by, but whenever i tried it, it always gives me error:

Cannot perform an aggregate function on an expression containing an aggregate or a subquery.

So, how do i achive this?

Answer 1

Move all the subquery to the FROM statement, joining them with the main table, than in the main SELECT you call the fields already aggregated in the subquery