Interested to Buy Any Domain ? << Click Here >> for more details...
What technique is used to retrieve data from more than one
table in a single SQL statement?
- 9 Answers
- 15704 Views
- CTS, IBM, TCS, I also Faced
- E-Mail Answers
Answer Posted / bala
Using Temp Table data can be retrieved from more than one
table.
| Is This Answer Correct ? | 0 Yes | 3 No |
Post New Answer View All Answers
SQLCODE = -199, ERROR: ILLEGAL USE OF KEYWORD CHAR, TOKEN KEY was expected
How do you simulate the explain of an embedded sql statement in spufi/qmf?
What is the physical storage length of date data type?
What is cobol db2?
what is the responsibility of the construction superintendent
Define data page.
What is db2?
Mention a credible reason why select* is never given preference in an sql program that has been embedded.
How do I import a csv file into db2?
What are the contents of a dclmgen?
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 dpf in db2?
What is runstats utility in db2?
How to resolve deadlock issue
What is db2 optimizer?
