我有一个名为totals的表,数据如下:
ACC_ID Data_ID Mon Weeks Total_AR_Count Total_FR_Count Total_OP_Count
23 9 01/2011 4 172 251 194
42 9 01/2011 4 2 16 28
75 9 01/2011 4 33 316 346
75 9 07/2011 5 1 12 20
42 9 09/2011 5 25 758 25
我希望输出为按ACC_ID和Data_ID分组的所有计数的平均值:
ACC_ID Data_ID Avg_AR_Count Avg_FR_Count Avg_OP_Count
23 9 172 251 194
42 9 13.5 387 26.5
75 9 17 164 183
怎么做呢?
答案 0 :(得分:3)
您对所需内容的描述会编写SQL:
SELECT ACC_ID, Data ID, AVG(Total_AR_Count) AS Avg_AR_Count, AVG(Total_FR_Count) AS Avg_FR_Count...
FROM table
GROUP BY ACC_ID, Data_ID