Interested to Buy Any Domain ? << Click Here >> for more details...
if suppose i am having an ACCOUNT table with 3 coloumns ACC.
NO,ACC. NAME,ACC. AMOUNT . If a unique index is also
defined on ACC.NO and ACC.NAME then write a query to
retrieve account holders records who have more than 1 ACC.
- 8 Answers
- 12151 Views
- Wipro, I also Faced
- E-Mail Answers
Answer Posted / s
For this scenario duplicate records will not exist in the
table as the index has been defined on the 2 primary keys.
Hence the answer is we can't pull the account holders
having more than 1 account
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is the use of value function?
Following a db2 update statement, what is the quickest way to compute the total number of updated rows?
What is the cobol picture clause of the db2 data types date, time, timestamp?
How can we read records for specific member in CL? AND rpg?
SET is the ANSI standard for variable assignment, SELECT is not. SET can only assign one variable at a time, SELECT can make multiple assignments at once. If assigning from a query, SET can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SELECT will assign one of the values to the variable and hide the fact that multiple values were returned (so you'd likely never know why something was going wrong elsewhere - have fun troubleshooting that one) When assigning from a query if there is no value returned then SET will assign NULL, where SELECT will not make the assignment at all (so the variable will not be changed from it's previous value) As far as speed differences - there are no direct differences between SET and SELECT. However SELECT's ability to make multiple assignments in one shot does give it a slight speed advantage over SET.
What is db2 and what is the use of db2 optimizer?
Describe major components of db2?
What is the picture clause of null indicator variable?
What are union and union all?
What os does db2 run on?
What is the use of commit in db2?
Explain about rct in db2?
What is dbrm in db2 database?
What does db2 plan contain?
What is page size in db2?
