what will be the output of the below given query, if no
matching records are found : (a.) 0 (b.) null (c.) error
select Avg(salary)
from TableA
where Deptno = 'insurance'
- 10 Answers
- 14834 Views
- Amdocs, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / rama krishna reddy
b
if no matching records found then it will return null value
| Is This Answer Correct ? | 36 Yes | 3 No |
Answer / guest.
Lalit, I contradict your answe because the question itself
says that there is no matching record with
deptno='insurance'. So (b)is the correct answer.
| Is This Answer Correct ? | 20 Yes | 1 No |
Answer / pankaj
ans is a) ZERO
the anser is ZERO because there is no record in the table
they can shows the zero value present in the table
0 record is selected
message is disply
| Is This Answer Correct ? | 2 Yes | 2 No |
Answer / mr.perfect
error +100 we will get, record not found.......
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / shailendra
It will be error, as we are using where with AVG function....we should use having
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / swapnil
It depends up on the which database we are using. I m using
PostgreSQL it is in open source.It returns 0 value.
| Is This Answer Correct ? | 1 Yes | 2 No |
Answer / lalit
Hi,
My understanding is different so it can be a or b. Assume
that there are 10 records and this column can have null
values. If 9 records have null and one record has vale as
zero then the answer would be zero and if all of them have
null then the answer would be null. If no rows satifies the
criteria then it would be null.
| Is This Answer Correct ? | 5 Yes | 7 No |
how to u check the query is executing or not ?where will u check for sqlcode ?
Explain db2.
Which command is used to connect to a database in DB2 ? Give the Syntax.
What do you need to do before you do EXPLAIN?
What is meant by a unit of recovery?
What is the logical entity between plan and Package?
What is alias in db2?
What does DSNDB07 database do?
select 100 records from million records ?
What are iseries servers?
How we create a tables in DB2 ?Previously client has using 7 letters for user id,now he wants to increase the letters from 7 to 12 for user id.How we can do it?
what is the steps followed in EXPLAIN Process or EXPLAIN command. (Explain is for identifying the optimized access path but how or what is the steps for doing the EXPLAIN)
COBOL 
