When Can you be sure that a query will return only one row?
Answer Posted / 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 |
Post New Answer View All Answers
What is the use of db2 optimizer?
What is runstats and reorg in db2?
what is utility for parm lib
How can you count the number of rows from a table tab?
What is runstats db2?
How and when does the db2 enforces the unique key?
Which command is used to connect to a database in DB2 ? Give the Syntax.
What is db2 optimizer?
What is the difference between dbm cfg and db cfg file in db2 ?
What is the difference between bind and rebind in db2?
Can we insert update delete in view?
What action db2 takes when a program aborts in the middle of a transaction?
What are sqlcodes –803,-805, -811, -818,-904,-911,-913,-101, +100?
What is dbrm in db2 database?
Mention the different locking levels that are available in db2.