Can someone point me out a function that return the multiplication of all row contents from a column?
It should work like the sum() function, but instead of the summary.. it will return the chain multiplication result. Here is what I need it to do.
x
-------
4
2
3
7
I need a function "multiply" so that when I issued "Select multiply(x) ...group by..." It would return 168 which is 4*2*3*7
I need to do this in DB2, I checked the DB2 UDF, but looks like there is no simple way to create a customized column function like this.
I'll be really appreciated if someone can help.
2  3274 
Can someone point me out a function that return the multiplication of all row contents from a column?
It should work like the sum() function, but instead of the summary.. it will return the chain multiplication result. Here is what I need it to do.
x
-------
4
2
3
7
I need a function "multiply" so that when I issued "Select multiply(x) ...group by..." It would return 168 which is 4*2*3*7
I need to do this in DB2, I checked the DB2 UDF, but looks like there is no simple way to create a customized column function like this.
I'll be really appreciated if someone can help.
--------------------------------------------
Reply : select exp(sum(ln(val_ num))) from test_multiply;
select exp(sum(ln(val_ num))) from test_multiply;
It will solve your purpose
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