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Answer Posted / s
Buffer pool are areas of virtual storage that temporarily
stores tablespace pages and index pages.
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What are db2 objects?
What db2 400?
Why db2 is called 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.
Following a db2 update statement, what is the quickest way to compute the total number of updated rows?
What is the cobol picture clause of the db2 data types date, time, timestamp?
What is release/acquire in bind?
What is the physical storage length of timestamp data type?
How will you return the number of records in table?
What are sqlcodes –803,-805, -811, -818,-904,-911,-913,-101, +100?
How do I import a csv file into db2?
What is consistency token in db2?
How to find primary key of a table in db2?
What os does db2 run on?
Give a brief description of db2 isolation levels?
