When Can you be sure that a query will return only one row?
Answers were Sorted based on User's Feedback
Answer / shailendra
when you will retrive the record on the basis of primary key
for the perticuler record.
as like
select * from table_name where acct_no =2345678754332
the above given answeris also right
Is This Answer Correct ? | 2 Yes | 1 No |
Answer / s
A Matching Index scan with equal predicate on a Unique
index will return only one row.
Is This Answer Correct ? | 1 Yes | 1 No |
Answer / shankar
When you use CURSORS in your program.
or
when you use FETCH FIRST (n) ROW ONLY option on your SELECT
statement.
Is This Answer Correct ? | 1 Yes | 2 No |
Answer / shekhar
when u use column function without using group by clause. it will give only single value. PLz correct if i m wrong.
Is This Answer Correct ? | 0 Yes | 2 No |
What is the function of logging in the db2 database?
Explain what a plan is?
What is dbrm?
what is the use of commit ? and what is the syntax?
Comment whether dclgen is mandatorily used. If not, then what is the point of using it?
how to resolve -811 sqlcode .give clear explaination
What is auditing?
How to resolve -805 error in DB2?
how 2 resolve the -311 sqlcode
what are the frequent DB2 abends did you encounter in your programs ?? What are different SQL abends ??
Suppose there are many duplicate records in a Db2 table. What is the query to retrive only duplicate records?
What is a buffer in memory?