I posted a similar question yesterday with the same code, I have rewritten and it should be perfect to a new specification but for some reason it is not working.
I am using Oracle 10g Express.
The code below is working out the top 10% of earning solicitors.
CREATE VIEW rich_solicitors AS
select notes.time_spent*rate.rate_amnt+coalesce(special_rate.s_rate_amnt,0)
AS solicitor_made, notes.solicitor_id
FROM notes, rate, solicitor_rate, solicitor, case, contract, special_rate
WHERE notes.solicitor_id = solicitor.solicitor_id
AND solicitor.solicitor_id = solicitor_rate.solicitor_id
AND solicitor_rate.rate_id = rate.rate_id
AND notes.case_id = case.case_id
AND case.contract_id = contract.contract_id
AND contract.contract_id = special_rate.contract_id (+)
ORDER BY -solicitor_made;
SELECT * FROM rich_solicitors
WHERE ROWNUM <= (SELECT COUNT(*)/10 FROM rich_solicitors);
I need to work out the top 10% of last year, I thought it would be as easy as adding the start_date and expiry_date to the SELECT and adding the following WHERE function:
AND contract.start_date >= 01-01-10
AND contract.expiry_date <= 01-01-11
I have inserting the date corectly using TO_DATE. My lecturer spent a good hour with me working out why this wouldnt work but to no avail.
It kept on returning the error - ORA-00932: inconsistent datatypes: expected CHAR got NUMBER
I also tried defining the date format and that still returned the same error
CREATE VIEW rich_solicitors1 AS
SELECT notes.time_spent*rate.rate_amnt+coalesce(special_rate.s_rate_amnt,0) AS solicitor_made, notes.solicitor_id, TO_CHAR(contract.start_date, 'DD-MM-YY'), TO_CHAR(contract.expiry_date, 'DD-MM-YY')
FROM notes, rate, solicitor_rate, solicitor, case, contract, special_rate
WHERE notes.solicitor_id = solicitor.solicitor_id
AND solicitor.solicitor_id = solicitor_rate.solicitor_id
AND solicitor_rate.rate_id = rate.rate_id
AND notes.case_id = case.case_id
AND case.contract_id = contract.contract_id
AND contract.contract_id = special_rate.contract_id (+)
AND contract.start_date >= 01-01-10
AND contract.expiry_date <= 01-01-11
ORDER BY -solicitor_made;
any ideas?
Many thanks, any criticism is much appreciated, I am a student and at my very first steps with this, before about 9 days ago I had no SQL knowledge at all.
Can you try i have replaced your coalesce by NVL function
SELECT notes.time_spent*rate.rate_amnt+NVL(special_rate.s_rate_amnt,0)
AS solicitor_made, notes.solicitor_id, TO_CHAR(contract.start_date, 'DD-MM-YY'),
TO_CHAR(contract.expiry_date, 'DD-MM-YY')
FROM notes, rate, solicitor_rate, solicitor, case, contract, special_rate
WHERE notes.solicitor_id = solicitor.solicitor_id
AND solicitor.solicitor_id = solicitor_rate.solicitor_id
AND solicitor_rate.rate_id = rate.rate_id AND notes.case_id = case.case_id
AND case.contract_id = contract.contract_id
AND contract.contract_id = special_rate.contract_id (+)
AND contract.start_date >= to_date('01-01-10','MM-DD-YY')
AND contract.expiry_date <= to_date('01-01-11' ,'MM-DD-YY')
ORDER BY solicitor_made