Compare sum of columns between tables
I'm trying to create a query for this problem.
Suppose I have these two tables:
Acceptor table:
ID TYPE QTY
-- ---------- ------------------
1 AB+ 1
2 O- 5
3 O+ 1
4 O- 5
5 O- 5
6 AB- 1
7 AB+ 1
Donor table:
ID TYPE QTY
-- ---------- ------------------
1 AB+ 2
2 O- 5
3 O+ 3
4 O- 5
5 O- 3
6 AB- 1
7 AB+ 3
I need a query to select the types of blood, and the difference between the quantities in cases where the SUM of Acceptor.QTY is greater than the SUM of Donor.QTY.
So in this case, Donor's O- => 5 + 3 + 5 = 13 and the Acceptor's O- => 5 + 5 + 5 = 15.
The query would have to return
O- 2
mysql join sum
asked 5 mins ago
Rafael GomesRafael Gomes
1
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I'm trying to create a query for this problem.
Suppose I have these two tables:
Acceptor table:
ID TYPE QTY
-- ---------- ------------------
1 AB+ 1
2 O- 5
3 O+ 1
4 O- 5
5 O- 5
6 AB- 1
7 AB+ 1
Donor table:
ID TYPE QTY
-- ---------- ------------------
1 AB+ 2
2 O- 5
3 O+ 3
4 O- 5
5 O- 3
6 AB- 1
7 AB+ 3
I need a query to select the types of blood, and the difference between the quantities in cases where the SUM of Acceptor.QTY is greater than the SUM of Donor.QTY.
So in this case, Donor's O- => 5 + 3 + 5 = 13 and the Acceptor's O- => 5 + 5 + 5 = 15.
The query would have to return
O- 2
mysql join sum
asked 5 mins ago
Rafael GomesRafael Gomes
1
New contributor
Rafael Gomes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I'm trying to create a query for this problem.
Suppose I have these two tables:
Acceptor table:
ID TYPE QTY
-- ---------- ------------------
1 AB+ 1
2 O- 5
3 O+ 1
4 O- 5
5 O- 5
6 AB- 1
7 AB+ 1
Donor table:
ID TYPE QTY
-- ---------- ------------------
1 AB+ 2
2 O- 5
3 O+ 3
4 O- 5
5 O- 3
6 AB- 1
7 AB+ 3
I need a query to select the types of blood, and the difference between the quantities in cases where the SUM of Acceptor.QTY is greater than the SUM of Donor.QTY.
So in this case, Donor's O- => 5 + 3 + 5 = 13 and the Acceptor's O- => 5 + 5 + 5 = 15.
The query would have to return
O- 2
mysql join sum
asked 5 mins ago
Rafael GomesRafael Gomes
1
New contributor
Rafael Gomes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I'm trying to create a query for this problem.
Suppose I have these two tables:
Acceptor table:
ID TYPE QTY
-- ---------- ------------------
1 AB+ 1
2 O- 5
3 O+ 1
4 O- 5
5 O- 5
6 AB- 1
7 AB+ 1
Donor table:
ID TYPE QTY
-- ---------- ------------------
1 AB+ 2
2 O- 5
3 O+ 3
4 O- 5
5 O- 3
6 AB- 1
7 AB+ 3
I need a query to select the types of blood, and the difference between the quantities in cases where the SUM of Acceptor.QTY is greater than the SUM of Donor.QTY.
So in this case, Donor's O- => 5 + 3 + 5 = 13 and the Acceptor's O- => 5 + 5 + 5 = 15.
The query would have to return
O- 2
mysql join sum
mysql join sum
asked 5 mins ago
Rafael GomesRafael Gomes
1
New contributor
Rafael Gomes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 5 mins ago
Rafael GomesRafael Gomes
1
New contributor
Rafael Gomes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 5 mins ago
Rafael GomesRafael Gomes
1
New contributor
Rafael Gomes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 5 mins ago
Rafael GomesRafael Gomes
1
asked 5 mins ago
Rafael GomesRafael Gomes
1
1
New contributor
Rafael Gomes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Rafael Gomes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Rafael Gomes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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