Answer Posted / purushothr
view is a logical table that can be created by one or more
base table
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
How to execute stored procedure in db2 command editor?
How do I add a column in db2?
What types of tables are there in the db2 database?
What is db2 bind?
What is a system catalog table in db2?
How do you stop a db2 database in linux?
Explain packages.
What is catalog database in db2?
Are view updateable?
I have a subprogram B calling from mainprogram A.I have opened a cursor in A ,Can i fetch the same cursor in subprogram B , If yes , Please explain the reason?
How connect db2 database to datastage?
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 meant by explain?
Which are the db2 tools to protect integrity of the database?
Which component is responsible for db2 startup and shutdown?
