Interested to Buy Any Domain ? << Click Here >> for more details...
Suppose if I need to update a column, how you do that using
cursor?
- 2 Answers
- 8166 Views
- Verizon, I also Faced
- E-Mail Answers
Answer Posted / sandy
EXEC SQL DECLARE X CURSOR FOR
SELECT * FROM ABC
FOR UPDATE OF <COLUMN> ==>If we know the column we would
like to update.
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
How can you find out the # of rows updated after an update statement?
List out the buffer pools in db2
Can we update view in db2?
How can you validate Sql errors during cursor operation in db2 pgms and where do you code?
Give a brief description of db2 isolation levels?
Is db2 a mainframe?
Which is faster delete or truncate?
What is nvl in db2?
How to test SQL -911 error while developing COB-DB2 program
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 a page in db2?
What does a deadlock mean in DB2?
How to run db2 command in windows?
Explain the function of data manager.
Explain in detail about buffer manager and its functionalities?
