SELECT 
        TB2.id, TB2.Name, 
        SUM(B - A) /
                ( SELECT 
                    MAX(LEVEL) AS Count_Days 
                    FROM dual 
                    START WITH :p_BegDate <= :p_EndDate
                    CONNECT BY :p_BegDate + rownum <= :p_EndDate
                )
                AS Balance
    FROM 
        Table1 TB1, Table2 TB2, (SELECT trunc(:p_BegDate + rownum - 1) AS Temp
                                FROM DUAL 
                                START WITH :p_BegDate <= :p_EndDate
                                CONNECT BY :p_BegDate + rownum <= :p_EndDate
                                )
    WHERE 
        TB1.DATE_T >= :p_BegDate AND TB1.DATE_T <= :p_EndDate        
        AND TB2.ID Like '1_' 
        AND TB2.id = TB1.tb2_id 
    GROUP BY TB2.id, TB2.Name
    ORDER BY 3 DESC;

SELECT -P_SALDO.GETSALDO('1', '01/03/2018') SALDO FROM DUAL; -- -34050617,86
...
SELECT -P_SALDO.GETSALDO('1', '14/03/2018') SALDO FROM DUAL --меняется : -34516117,86
...
SELECT -P_SALDO.GETSALDO('1', '22/03/2018') SALDO FROM DUAL --меняется : -34649451,19
...
SELECT -P_SALDO.GETSALDO('1', '27/03/2018') SALDO FROM DUAL --меняется : -34666901,19
...
SELECT -P_SALDO.GETSALDO(970692, '01/04/2018') SALDO FROM DUAL;  

SELECT SUM(A - B) AS SALDO
    FROM Table1 
    WHERE
        tb2_id = 1 AND  - id человека
        DATE_TURN <= :p_EndDate