SQL sentence and GROUP BY

Question

Hello:
I have a table with the following facts: ID (autoincrement, primary key), item code, amount, value.
I must select, FOR EACH item, the last ID (max value), the item code, and the division between value and amount just of the register with the MAX(ID).
I think I must GROUP BY item, the dicision must appear in the sentence but not GROUPED BY anything.
Something like this:
SELECT max(ID), itemcode, value/amount
FROM tablename
GROUP BY itemcode
FOR EXAMPLE, if I have the table
1 Potatoes 2 1000
2 Tomatoes 3 300
3 Tomatoes 2 100
4 Potatoes 1 4000
The result should be
3 Tomatoes 50
4 Potatoes 4000
Lots of thanks for your help and excuse me for my los level of SQL!

Answer 1

Hello:
I have a table with the following facts: ID
(autoincrement, primary key), item code, amount,
value.
I must select, FOR EACH item, the last ID (max
value), the item code, and the division between value
and amount just of the register with the MAX(ID).
I think I must GROUP BY item, the dicision must
appear in the sentence but not GROUPED BY anything.
Something like this:
SELECT max(ID), itemcode, value/amount
FROM tablename
GROUP BY itemcode
FOR EXAMPLE, if I have the table
1 Potatoes 2 1000
2 Tomatoes 3 300
3 Tomatoes 2 100
4 Potatoes 1 4000
The result should be
3 Tomatoes 50
4 Potatoes 4000
Lots of thanks for your help and excuse me for my los
level of SQL!Your question is not clear. From the sample data and req o/p that you have given i think you want something like this:
Maximum 2 IDs from a given set of data, their codes and a value => amount/value. Is that what you want?
Jithendra