看起來是沒有讓螢幕上顯示文字 private void button2_Click(object sender, EventArgs e) {...
var result = Data.GroupBy(g => g.Employee) .Select(g => ne...
找到一篇可以搜尋所有層級的解法,供參考How to search through multi layers nested objects by keys in...
先假設你要每兩個相加 SELECT (category_id-1)/2,SUM(data_value) FROM t GROUP BY (category_id...
def gup(): g=filedialog.askopenfilename() plus(g) def plus(g): prin...
會出現多種個金是因為 SUBSTRING(CUSTID,9,1) <> '' 有多種結果,所以要對最終結果做分組 SELECT SUBSTRING(...
1.建立包含MAC ADD與使用狀態的資料庫2.寫一個程式,執行時(1)抓取本機MAC ADD (非本機就要請對方輸入MAC ADD,再用讀取命令行的方式取得)...