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Question: write a query to update third column such that
Answer: There is a table having the following columns :-
student id marks1 marks2 maxmarks
1 10 20 20
2 25 30 30
3 30 10 30
4 35 25 35
5 20 40 40
write a query to update column maxmarks such that maxmarks column contains
whatever be the greater value among marks1 and marks2 columns ( as shown in table ). |
| July 07, 2008 09:04:15 |
#1 |
| grmadhankumar |
Member Since: June 2006 Total Comments: 1 |
RE: write a query to update third column such that
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| update table student set maxmarks=decode(sign(mark1-mark2),-1,mark1,mark2); |
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