這是我輸入:總結從當前行變量和其以前的
data a;
policy_no = 1;
X_NET_PREMIUM_AMT = 1;
X_NET_PREMIUM_V_AMT = 8;
output;
policy_no = 1;
X_NET_PREMIUM_AMT = 2;
X_NET_PREMIUM_V_AMT = 6;
output;
policy_no = 1;
X_NET_PREMIUM_AMT = 9;
X_NET_PREMIUM_V_AMT = 4;
output;
policy_no = 1;
X_NET_PREMIUM_AMT = 12;
X_NET_PREMIUM_V_AMT = 5;
output;
policy_no = 1;
X_NET_PREMIUM_AMT = 6;
X_NET_PREMIUM_V_AMT = 3;
output;
policy_no = 2;
X_NET_PREMIUM_AMT = 18;
X_NET_PREMIUM_V_AMT = 78;
output;
policy_no = 2;
X_NET_PREMIUM_AMT = 25;
X_NET_PREMIUM_V_AMT = 16;
output;
policy_no = 2;
X_NET_PREMIUM_AMT = 91;
X_NET_PREMIUM_V_AMT = 42;
output;
policy_no = 3;
X_NET_PREMIUM_AMT = 123;
X_NET_PREMIUM_V_AMT = 52;
output;
policy_no = 3;
X_NET_PREMIUM_AMT = 4;
X_NET_PREMIUM_V_AMT = 1;
output;
run;
我需要做的就是爲每一個policy_no:
X_NET_PREMIUM_AMT = X_NET_PREMIUM_AMT OF PREVIOUS ROW + X_NET_PREMIUM_V_AMT OF CURRENT ROW.
迄今爲止 - 沒有問題。
是什麼讓我很難做的是, 我需要的X_NET_PREMIUM_AMT下一個計算更新, 我將解釋:
列#1(policy_no = 1):
X_NET_PREMIUM_AMT = 0(no previouse row) + 8 = 8;
行#2(policy_no = 1):
X_NET_PREMIUM_AMT = 8 + 6 = 14;
行#3(policy_no = 1):
X_NET_PREMIUM_AMT = 14 + 4 = 18;
等等....
不幸的是, 我不知道如何做到這一點...
會aprreciate你的幫助
現在我不確定你描述的是什麼 - 你需要最後一行和前兩行的總和? – vasja
如果您嘗試創建運行總計,請使用'retain'語句。 – Jeff