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What is a system catalog table in db2?


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More DB2 Interview Questions

what is the difference between join and union?

4 Answers   IBM,


Is db2 relational database?

0 Answers  


What do the initials DDL and DML stand for and what is their meaning?

2 Answers  


What does DSNDB07 database do?

2 Answers  


What is commit in db2?

0 Answers  


What does runstats do in db2?

0 Answers  


What is a db2 collection?

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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.

0 Answers  


Can All Users Have The Privilege To Use The SQL Statement Select (DML)?

1 Answers  


What is explain plan in db2?

0 Answers  


I have a DB2 table which has 1000 rows.after udatingg first 110 rows, my job abends. Now what I have to do if I want to restart the job next time so that it should start updating from 111th row (without updating first 110 rows again).

10 Answers   Cap Gemini, Wipro,


What are the benefits of using the db2 database?

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