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How to take backup of table in db2?
What is blu acceleration in db2?
What is dpf in db2?
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 the role of schema in the db2 database?
Explain correlated sub-queries.
What is the maximum size of a char data type in db2?
What is a db2 tablespace?
Explain about mirror activator disk mirroring?
Mention a credible reason why select* is never given preference in an sql program that has been embedded.
How do I add a column in db2?
How to create backup table in db2?
What is a bind in db2?
How can deadlocks be resolved?
What action db2 takes when a program aborts in the middle of a transaction?
