Answer Posted / mahesh

dsndb06

What is buffer pool?

1110

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What are the 2 sqlcodes that are returned?

1196

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Name the lockable units in DB2?

1133

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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.

2679

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What is meant by explain?

1138

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can we view the access paths created by dbrm ? how ? thx

7104

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Comment whether dclgen is mandatorily used. If not, then what is the point of using it?

1063

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What is reorg?

1165

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What is database manager in db2?

1027

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Is it possible using max on a char column?

1146

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What is the use of runstats in db2?

1115

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What is db2 stogroup?

1167

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in my project..TEST is db2 8.1 version In PROD it is 7.1 if i do REORG in TEST.. can I use the same REORG jcl with out modification in PROD region (this is DB2 8.1 )? if not, what modification i need to do in my REORG control card?

2099

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How do you concatenate the firstname and lastname from emp table to give a complete name?

1077

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How is a typical db2 batch pgm executed?

1182

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