+------+------+-------+
+ from + to + value +
+------+------+-------+
+ 1 + 2 + 2 +
+ 1 + 3 + 3 +
+ 1 + 4 + 4 +
+ 2 + 5 + 5 +
+ 2 + 6 + 4 +
+ 3 + 5 + 3 +
+ 4 + 7 + 2 +
+ 5 + 7 + 1 +
+ 6 + 7 + 2 +
+------+------+-------+
我希望显示如下查询：
+-------+----------+------------+
+ node1 + 1,2,6,7 + sum(value) +
+-------+----------+------------+
+ node2 + 1,2,5,7 + sum(value) +
+-------+----------+------------+
+ node3 + 1,3,5,7 + sum(value) +
+-------+----------+------------+
+ node4 + 1,4,7 + sum(value) +
+-------+----------+------------+
我希望有人可以帮我查询mysql或mysql程序。请:(