Whatz the main diff between Subquery and a Join

Answer Posted / mythili

Join:
It is the method of joining one or more tables together and
finding a answer.

Sub Query:

It is a method of finding one answer using another query.

Main Difference:

In join both the tables should have a comman column name
but in subquery without having a column name we can execute
the query.

Is This Answer Correct ?    30 Yes 19 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How to rollback the current transaction in oracle?

536


How to do clean up if create database failed?

566


What is private procedure oracle?

525


You have found corruption in a tablespace that contains static tables that are part of a database that is in NOARCHIVE log mode. How would you restore the tablespace without losing new data in the other tablespaces?

1452


What is PL/SQL ?

1106






I have some query regarding Report generation from Oracle Apps "PO module". I have to generate a report where table columns are as below: Vendor_name Invoice No PO Number Item_Quantity Value of Goods Date of Shipping Name_of_the_transport Date_of_receipt_issued. Now my questions is :from which table/column I can get the information of "Name_of_the_transport" column. Thanks in advance.

2881


Please explain me all types of Data models. Also give me the details if each model can have other name.for example:schematic data model is also known as conceptual data model and entity relation data model.

1862


How to select all columns of all rows from a table in oracle?

586


What is oracle rowcount?

570


What is the usage of synonyms?

579


how can we store any pdf file in oracle

1634


How to convert character types to numeric types?

571


What is format trigger?

1614


You have 4 instances running on the same UNIX box. How can you determine which shared memory and semaphores are associated with which instance?

1443


Iam learning oracle developer 2000.. can anyone give me then tutorials sites or PDF related to developer 2000 please send me the details @ mak2786@gmail.com thanks Arun

1656