What are various joins used while writing SUBQUERIES?
Answers were Sorted based on User's Feedback
Answer / nishi
Self join-Its a join foreign key of a table references the same table. Outer Join--Its a join condition used where One can query all the rows of one of the tables in the join condition even though they don't satisfy the join condition.
Equi-join--Its a join condition that retrieves rows from one or more tables in which one or more columns in one table are equal to one or more columns in the second table.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / basanti
Joins and subquery both are different.
We don't use joins while writing subqueries.
| Is This Answer Correct ? | 0 Yes | 0 No |
What is the purpose of init.ora. ? how many init.ora exist in oracle installation? suppose there are 3 database on one oracle server, how many init.ora do I have? what are various database objects? how will you identify memmory related performace issue in oralce? any idea about basic architure difference of oracle and db2? comment on which is better , with reasons? what is a fuction based index? is it recommended to use the same. ? what is global temporay table? what is teh signification of the parameter session_cached_cursor ?
What is the difference between sharding and partitioning?
How do I use os authentication with weblogic jdriver for oracle and connection pools?
How to define a procedure inside another procedure?
How to join two tables in a single query using oracle?
What is format trigger?
9)When information has to be stored w.r.t employees and their respective departments, which of the following is the Correct formulation of entries? A)Employee and department would together be represented as an entity. B)This is too less information to decide on entities. C)An employee would be one entity and a department would be another. D)Such a scenario cannot be modelled in RDBMS
How to rebuild an index in oracle?
Typically, where is the conventional directory structure chosen for Oracle binaries to reside?
Hi all, Can any one give answer for this question. Suppose im having employee table with fields, eno, ename, dept, address1, address2, address3. In address field employee can fill only address1 or address2 or address3... at a time he can fill three address fields. now i want all employee names who filled only one address field.. Plz its urjent can any one give querry.. Thanks in advance.
what is exact difference between drop and truncate table.
In the oracle version 9.3.0.5.0, what does each number shows?