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Answer Posted / hari
backup db dbname tablespace tablespacename;
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How can the firstname and the lastname from the emp table be concatenated to generate complete names?
Which component is used to execute the sql statements?
What is the physical storage length of the data types date, time, and timestamp?
How will you return the number of records in table?
How do we specify index to include or not during bind process.
by using cursors , we can access particular records from the table based on some condition, i want to delete those selected records, how can we write a query for this in the program?
How do I optimize a query in db2?
What is explain in db2?
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What does db2 blu stand for?
What is sqlca’s maximum length?
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.
List down the types of triggers in the db2 database?
What is host variable in db2 cobol?
What is check constraint. Explain with example.
