What error I will get if my select query gives multiple row while executing a Cobol-DB2 program.How can I solve it without using a cursor.

4 Answers   Cap Gemini, Verizon,

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How is the SUBSTR keyword used in sql?

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what is the responsibility of the construction superintendent

0 Answers   Almco,

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What is a page?

2 Answers  

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How can you get the number of rows impacted by the last executed query?

1 Answers  

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when we are tying to update a table having 100 rows. if the program abends when updating 51 row . how to start updating again from the 51 row .what was the logic

2 Answers   TCS,

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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 a SELECT statement?

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Define declaration generator (dclgen).

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What language is db2 written in?

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can we drop column from a table

7 Answers   INDUS,

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What is a DB2 catalog?

2 Answers  

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