We need to compare two successive records of a table based
on a field. For example, if the table is CUSTOMER, and the
filed is Account_ID, To compare Account_IDs of record1 and
record2 of CUSTOMER table, what can be the query ?
Answers were Sorted based on User's Feedback
Answer / garima
SELECT (case when a_id > b_id then 'Greater' else 'Lesser'
end), a_id, b_id
FROM (SELECT ROWNUM r_a, account_id a_id
FROM customer) a,
(SELECT ROWNUM r_b, account_id b_id
FROM customer) b
where r_a = r_b+1;
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / suman rana
select * from
(SELECT account_id , lead(account_id, 1, 0) over (order by
1) nxt_account_id FROM customer)
where account_id = nxt_account_id
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / manikandan. s
WITH wt AS
(SELECT ROWNUM sl, a.Account_ID
FROM CUSTOMER a)
SELECT a1.*
FROM wt a1, wt a2
WHERE a1.sl = a2.sl + 1 AND a1.col1 = a2.col1
UNION
SELECT a2.*
FROM wt a1, wt a2
WHERE a1.sl = a2.sl + 1 AND a1.col1 = a2.col1
| Is This Answer Correct ? | 1 Yes | 2 No |
Explain the features of oracle?
3. Adapt your query in (2) above so that only post codes with more than twenty orders are displayed.
select statement does not retrieve any records. what exception is raised?
I have a table called 'test' on source and target with same name, structure and data type but in a different column order. How can you setup replication for this table?
What is a trigger and what are its types in oracle?
How many types of table in Oracle?
Can any one explain me when i execute below query.. select months_between('07-JUL-12','10-FEB-12') from dual; Out put:- 4.90322581 How oracle calculate?
What is concurrency in oracle?
How to commit the current transaction in oracle?
19. Display all clients whose name begins with the letter J or contains the letter M anywhere or contains E as the third letter.
What is a user role in oracle?
What is coalesce function?