What is runstats and reorg in db2?

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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.

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what is cursor stability?

2 Answers   IBM,

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How does db2 sample database connect?

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Which component is responsible for db2 startup and shutdown?

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if any of the column names is provided wrong, where do you get the error(during precompilation or during Bind)

3 Answers  

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How to resolve -407 sql code in DB2?

9 Answers   Cap Gemini,

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What is the cascade rule and how does it relate to deletions made with a subselect?

1 Answers  

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Which one allows duplicate values Union or Union All ?

3 Answers  

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What are data types?

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Hi , I am posting some interview ques . what is the use of cursors ? what is the diff between select and cursor ? bith are used for data retrival .. rite?

2 Answers   Deloitte,

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how to take the back up of the DB2 table.

7 Answers  

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