Answer Posted / renu gupta
DSNC transaction uses the command thread to give command to
Db2
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
List out the three types of page locks that can be held.
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.
How to retrieve rows from a db2 table in embedded sql?
What does reorg do in db2?
What is the maximum length of sqlca?
What is copy pending and check pending in db2?
What are sqlcodes –803,-805, -811, -818,-904,-911,-913,-101, +100?
Can you tell me how can you find out the # of rows updated after an update statement?
Explain in detail about buffer manager and its functionalities?
How do I delete a table in database?
What is consistency token in db2?
What is database reorganization?
On which levels locks can be applied?
What does db2 stand for?
Describe major components of db2?
