Cursor? Loop? Aggregate up rows data along with row results - sql

Question

I have the following table & data
Table name = MyTable
Description | Partition | Total
------------|---------------|--------------
CASH | Reconciled | 25
CASH | Adjustm | 50
CASH | Balanc | 120
LOANS | Adjustm | 44
LOANS | Balanc | 32
CARDS | Adjustm | 81
CARDS | Balanc | 67
MTG | Adjustm | 14
MTG | Balanc | 92
The requirement is simple enough - it's a straight select from the table, but for each unique description, I need to sum up the totals of all the partitions, such that the user will see
Description | Partition | Total
------------|---------------|--------------
CASH | TOTAL | 195 <
CASH | Reconciled | 25
CASH | Adjustm | 50
CASH | Balanc | 120
LOANS | TOTAL | 76 <
LOANS | Adjustm | 44
LOANS | Balanc | 32
CARDS | TOTAL | 148 <
CARDS | Adjustm | 81
CARDS | Balanc | 67
MTG | TOTAL | 106 <
MTG | Adjustm | 14
MTG | Balanc | 92
It's a stored proc I'm writing - I don't have the option of pulling this into a MT to perform this so I need to perform it in the body of the stored proc. Am I looking at some while Loop or Cursor to provide the roll up I need, or is there another glaringly obvious and easy solution that I'm just not seeing? Aside from the roll up, it's a straight
select * from MyTable
DB is Sybase.
Thanks

Answer 1

You can do this by using the GROUPING SETS extension of the GROUP BY clause:
SELECT Description,
COALESCE(Parition, 'Total') AS Partition,
SUM(Total) AS Total
FROM MyTable
GROUP BY GROUPING SETS ((Description, Partition), (Description));
or you could use:
SELECT Description,
COALESCE(Parition, 'Total') AS Partition,
SUM(Total) AS Total
FROM MyTable
GROUP BY ROLLUP (Description, Partition);
Without ROLLUP, you can do this using UNION ALL:
SELECT Description,
Parition,
Total
FROM MyTable
UNION ALL
SELECT Description,
'Total' AS Partition,
SUM(Total) AS Total
FROM MyTable
GROUP BY Description;