表结构如下: qtydate ---------------------------------------------- 132005/01/17 152005/01/19 32005/01/25 1052005/01/27 12005/01/31 3522005/02/03 122005/02/04 2552005/02/07 62005/02/18 12005/02/19 282005/02/21 12005/02/22 3942005/02/23
表结构如下: qty date ---------------------------------------------- 13 2005/01/17 15 2005/01/19 3 2005/01/25 105 2005/01/27 1 2005/01/31 352 2005/02/03 12 2005/02/04 255 2005/02/07 6 2005/02/18 1 2005/02/19 28 2005/02/21 1 2005/02/22 394 2005/02/23 359 2005/02/24 313 2005/02/25 325 2005/02/26 544 2005/02/27 68 2005/02/28 2 2005/03/01 求一個SQL寫法,將每個月的數量求和, 如: qry date 137 2005/01 ?? 2005/02 ?? 2005/03 SQL语句如下: select sum(qty), datename(year, date) as year, datename(month, date) as month from table group by year, month
