刪除用戶選擇的記錄？

Question

我正在編碼

String Name = txtName.getText();
String Surname = txtSurname.getText();  
st.executeUpdate("DELETE from list WHERE Name=@Name and Surname=@Surname");

但它不會刪除記錄。 語法有問題嗎？ 請幫忙。

Answer 1

您需要將@name和@surname替換為實際值。

並添加'圍繞你的價值觀：

DELETE from list WHERE Name='@Name' and Surname='@Surname'


String Name = txtName.getText().Trim();
String Surname = txtSurname.getText().Trim();  
String query = "DELETE from list WHERE Name='" + Name + "' and Surname='" + Surname + "'";
st.executeUpdate(query);

Answer 2

嘗試：

st.executeNonQuery("DELETE from list WHERE Name=?e and Surname=?");

並將名稱和姓氏作為參數傳遞。

Answer 3

用這個

如果表列表存在。

這會奏效。

String Name = txtName.getText();
String Surname = txtSurname.getText();  


st.executeUpdate("DELETE from list WHERE Name='"+Name"' and Surname='"+Surname"'");

我這樣解決了：

st.executeUpdate("DELETE from list WHERE Name='"+txtName.getText()+"'" + "and Surname='" + txtSurname.getText()+"'");

謝謝你們