Question

I have two rows in a table. I want to add in a third row which holds the total value.

My table is

SELECT 
CONTROLLED_PERCENTAGE, EL_CLIENT_ID, ID, 
   PERC_ADJ_UNITS_RECEIVED, PHY_DIG_OR_TOTAL, RECORDING_ID, 
   SUM_UNITS_RECEIVED, UNIT_TYPE
FROM EL_CLIENT_REC_UNITS;

I will have the EL_CLIENT_ID, UNIT_TYPE, PHY_DIG_OR_TOTAL will be ‘PHY’ or ‘DIG’ and I am looking to get the total. I want to add up the two record’s SUM_UNITS_RECEIVED and PERC_UNITS_RECEIVED where the UNIT_TYPES, EL_CLIENT_ID and RECORDING_IDs are the same. I then want to insert this as a new row with the same UNIT_TYPE, RECORDING_ID but this time have PHY_DIG_OR_TOTAL set to ‘TOTAL’;

Answer 1

Try something like this:

SELECT 
    ID, 
    EL_CLIENT_ID, 
    RECORDING_ID, 
    UNIT_TYPE,
    PHY_DIG_OR_TOTAL, 
    CONTROLLED_PERCENTAGE, 
    SUM_UNITS_RECEIVED, 
    PERC_ADJ_UNITS_RECEIVED
FROM EL_CLIENT_REC_UNITS

UNION ALL -- concatenate sets

SELECT 
    NULL                         AS ID, -- No ID for this row
    EL_CLIENT_ID                 AS EL_CLIENT_ID, 
    RECORDING_ID                 AS RECORDING_ID, 
    UNIT_TYPE                    AS UNIT_TYPE, 
    'TOTAL'                      AS PHY_DIG_OR_TOTAL, 
    AVG(CONTROLLED_PERCENTAGE)   AS CONTROLLED_PERCENTAGE,  -- I don't know what to do with that
    SUM(PERC_ADJ_UNITS_RECEIVED) AS PERC_ADJ_UNITS_RECEIVED,
    SUM(SUM_UNITS_RECEIVED)      AS SUM_UNITS_RECEIVED
FROM EL_CLIENT_REC_UNITS
GROUP BY UNIT_TYPE, EL_CLIENT_ID, RECORDING_ID;

Try to google for GROUP BY SQL statement to learn more about this statement.