I'm trying to work out an average field on a report that i'm writing
and having the problem described below.
e.g. if you had 3 weeks of cash which were 0, 2, 4 then a normal
average
would be ((0+2+4)/3) = 2 but the average that I want is (2+4)/2 = 3.
Now I can do this in SQL by using AVG(cash) with a WHERE cash>0. But
the
trouble comes when all cash values are zero for all all columns on the
report.
e.g. if I had
wk1 wk2 wk3
rowA 0 2 4
rowB 0 0 0
rowC 1 0 0
I am using
SELECT name, SUM(cash), AVG(cash) from TABLE where cash>0;
And I get
rowA, 6, 3
rowC, 1, 1
This is correct for those rows but I want a result for rowB that has
rowB, 0, 0
Can anyone help with this. 5 6417 pe********@f2s. com (PeterHardy) wrote in message news:<17******* *************** ****@posting.go ogle.com>... I'm trying to work out an average field on a report that i'm writing and having the problem described below.
e.g. if you had 3 weeks of cash which were 0, 2, 4 then a normal average would be ((0+2+4)/3) = 2 but the average that I want is (2+4)/2 = 3.
Now I can do this in SQL by using AVG(cash) with a WHERE cash>0. But the trouble comes when all cash values are zero for all all columns on the report.
e.g. if I had wk1 wk2 wk3 rowA 0 2 4 rowB 0 0 0 rowC 1 0 0
I am using
SELECT name, SUM(cash), AVG(cash) from TABLE where cash>0;
And I get rowA, 6, 3 rowC, 1, 1
This is correct for those rows but I want a result for rowB that has
rowB, 0, 0
Can anyone help with this.
Peter, the SQL you posted calculates the sum for a column on rows of
data while the description is summing the columns on a single row.
Which is it that you actually want? [A + B + C or summation of A for
the row set]
HTH -- Mark D Powell -- pe********@f2s. com (PeterHardy) wrote in message news:<17******* *************** ****@posting.go ogle.com>... I'm trying to work out an average field on a report that i'm writing and having the problem described below.
e.g. if you had 3 weeks of cash which were 0, 2, 4 then a normal average would be ((0+2+4)/3) = 2 but the average that I want is (2+4)/2 = 3.
Now I can do this in SQL by using AVG(cash) with a WHERE cash>0. But the trouble comes when all cash values are zero for all all columns on the report.
e.g. if I had wk1 wk2 wk3 rowA 0 2 4 rowB 0 0 0 rowC 1 0 0
I am using
SELECT name, SUM(cash), AVG(cash) from TABLE where cash>0;
And I get rowA, 6, 3 rowC, 1, 1
This is correct for those rows but I want a result for rowB that has
rowB, 0, 0
Can anyone help with this.
you'll have to special case that condition. something like this should do it:
SELECT name, SUM(cash), 0 FROM table GROUP BY name having SUM(cash) = 0;
then you just need a UNION.
HTH,
Ed Ma*********@eds .com (Mark D Powell) wrote in message news:<26******* *************** ****@posting.go ogle.com>... pe********@f2s. com (PeterHardy) wrote in message news:<17******* *************** ****@posting.go ogle.com>... I'm trying to work out an average field on a report that i'm writing and having the problem described below.
e.g. if you had 3 weeks of cash which were 0, 2, 4 then a normal average would be ((0+2+4)/3) = 2 but the average that I want is (2+4)/2 = 3.
Now I can do this in SQL by using AVG(cash) with a WHERE cash>0. But the trouble comes when all cash values are zero for all all columns on the report.
e.g. if I had wk1 wk2 wk3 rowA 0 2 4 rowB 0 0 0 rowC 1 0 0
I am using
SELECT name, SUM(cash), AVG(cash) from TABLE where cash>0;
And I get rowA, 6, 3 rowC, 1, 1
This is correct for those rows but I want a result for rowB that has
rowB, 0, 0
Can anyone help with this.
Peter, the SQL you posted calculates the sum for a column on rows of data while the description is summing the columns on a single row. Which is it that you actually want? [A + B + C or summation of A for the row set]
HTH -- Mark D Powell --
It is a summation of the row for the row set that i require.
> > > e.g. if I had wk1 wk2 wk3 rowA 0 2 4 rowB 0 0 0 rowC 1 0 0
I am using
SELECT name, SUM(cash), AVG(cash) from TABLE where cash>0;
And I get rowA, 6, 3 rowC, 1, 1
This is correct for those rows but I want a result for rowB that has
rowB, 0, 0
Can anyone help with this.
For the way you describe the situation here, you simply need:
SELECT my_tab.*,
(wk1+wk2+wk3) /
DECODE(wk1+wk2+ wk3,0,1,
(DECODE(wk1,0,0 ,1)+DECODE(wk2, 0,0,1)+DECODE(w k3,0,0,1)))
avg_value,
(wk1+wk2+wk3) total_value
FROM my_tab
Hi Peter,
Try this!
will work out OK I think...
Select Sum(Cash) / Sum(Case When Cash > 0 Then 1 Else 0 End)
From Table
cheers, Adem ed********@magi cinterface.com (Ed prochak) wrote in message news:<4b******* *************** ****@posting.go ogle.com>... pe********@f2s. com (PeterHardy) wrote in message news:<17******* *************** ****@posting.go ogle.com>... I'm trying to work out an average field on a report that i'm writing and having the problem described below.
e.g. if you had 3 weeks of cash which were 0, 2, 4 then a normal average would be ((0+2+4)/3) = 2 but the average that I want is (2+4)/2 = 3.
Now I can do this in SQL by using AVG(cash) with a WHERE cash>0. But the trouble comes when all cash values are zero for all all columns on the report.
e.g. if I had wk1 wk2 wk3 rowA 0 2 4 rowB 0 0 0 rowC 1 0 0
I am using
SELECT name, SUM(cash), AVG(cash) from TABLE where cash>0;
And I get rowA, 6, 3 rowC, 1, 1
This is correct for those rows but I want a result for rowB that has
rowB, 0, 0
Can anyone help with this.
you'll have to special case that condition. something like this should do it: SELECT name, SUM(cash), 0 FROM table GROUP BY name having SUM(cash) = 0;
then you just need a UNION.
HTH, Ed This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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and having the problem described below.
e.g. if you had 3 weeks of cash which were 0, 2, 4 then a normal
average
would be ((0+2+4)/3) = 2 but the average that I want is (2+4)/2 = 3.
Now I can do this in SQL by using AVG(cash) with a WHERE cash>0. But
the
trouble comes when all cash values are zero for all all columns on the
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