Difference between sub query and nested query ?
Answers were Sorted based on User's Feedback
Answer / a.brahmam
subquery are also called as nested query
question is wrong
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / sravzzz
Sunbquery is a query within a query where as Nested query
is a subquery which resinde in the WHERE clause.
Is This Answer Correct ? | 12 Yes | 15 No |
Answer / s.maheshbabu
quarry inside a quarry is called sub quarry.when sub quarry
is also called nested quarry.
co-related sub quarry is one as inner quarry is evaluated.is
anther result of inner are evaluated.
nested quarry is multiple time of one outer quarry.
ex;-quarry used in()caused co-related quarry.
quarry used with=operator is nested quarry.
Is This Answer Correct ? | 0 Yes | 3 No |
Answer / verme and verma
There is No Difference between nested query And Sub-Query
difference is only developed by, namely..
.Interviewer
.Programmer thinking
.Our Thinking
.For manipulating perfectly
Is This Answer Correct ? | 2 Yes | 5 No |
Answer / abhishek katiyar
I THINK DEFINITION DEPENDS UPON PROGRAM AND PROGRAMMER
Is This Answer Correct ? | 0 Yes | 6 No |
Main Diff. b/w Subquery & Nested Subquery:
The query inside a query is known as a subquery.
When we have another query again query inside subquery then
it is known as nested subquery.
Is This Answer Correct ? | 25 Yes | 36 No |
Answer / vrushali
Co-related sub query is one in which inner query is
evaluated only once and from that result outer query is
evaluated.
Nested query is one in which Inner query is evaluated for
multiple times for gatting one row of that outer query.
ex. Query used with IN() clause is Co-related query.
Query used with = operator is Nested query
Is This Answer Correct ? | 8 Yes | 68 No |
Can u please explain me the Discussion on Except ,using cast like type cast. Question in the context of difference between two tables
two tables are there emp(eno,ename,sal,deptno),dept(deptno,dname).how form the query in deptno,ename,max(sal)
What is format trigger?
What are the restrictions on external table columns?
What is the best way to do multi-row insert in oracle?
What is connection pooling in oracle?
Typically, where is the conventional directory structure chosen for Oracle binaries to reside?
what is the difference between no rows returned and null returned?
Explain oracle’s server parameter file.
What is Trace File ?
What is a tns file?
how do u know the total no of rows in a table?