What is pagespace?
Answer / s
May be asking about pageset.
Pageset is nothing but the datasets pertaining to a
tablespace. DB2 refers to tablespace as pagesets.
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Define buffer pool.
What is a db2 tablespace?
could you give me an example how, where i code CHECKPOINT and restart...I need and example....thanks..
max number of columns in a db2 table?
What is COPY PENDING status?
Suppose the outcome of executing a query results in a row having null. Based on the answer how you use it? Its declaration and inclusion?
how will you retrieve first record in table
What is database alias db2?
What is an access path?
What is a composite index and how does it differ from a multiple index?
What do you mean by NOT NULL? When will you use it?
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.