考虑像
这样的表格 debit credit code
-----------------------------
0 10 5
5 0 3
0 11 2
0 15 1
7 0 6
6 0 2
5 0 1
我需要生成这样的结果集,首先是借记,然后按代码列排序:
debit credit code
----------------------------
5 0 1
6 0 2
5 0 3
7 0 6
0 15 1
0 11 2
0 10 5
答案 0 :(得分:7)
你可以使用它。
debit credit code
----------- ----------- -----------
5 0 1
6 0 2
5 0 3
7 0 6
0 15 1
0 11 2
0 10 5
结果:
svn status
答案 1 :(得分:3)
请使用 order by cast(cast(code as varchar(50))
+ cast(debit as varchar(2)+ cast(credit as varchar(2) as int)
中的下方,您将获得您要查找的输出
PendingIntent pendingIntent = PendingIntent.getService(this,0 /* Request code */
, intent,PendingIntent.FLAG_UPDATE_CURRENT);
答案 2 :(得分:2)
package com.example.mujtaba.quizzer;
import android.app.ProgressDialog;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;
import android.widget.TextView;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.StringRequest;
import com.example.mujtaba.quizzer.Activity.QuizMaking;
import com.example.mujtaba.quizzer.Activity.QuizTaking;
import org.w3c.dom.Text;
import java.util.HashMap;
import java.util.Map;
public class Login extends AppCompatActivity {
private Button button;
private TextView username;
private TextView password;
private Spinner role;
private String url = "http://localhost:8080/users/signup";
private RequestQueue queue;
private ProgressDialog progress;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
username=(TextView) findViewById(R.id.username);
password=(TextView) findViewById(R.id.password);
button=(Button) findViewById(R.id.button);
role = (Spinner) findViewById(R.id.role);
// Create an ArrayAdapter using the string array and a default spinner layout
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
R.array.role_spinner, android.R.layout.simple_spinner_item);
// Specify the layout to use when the list of choices appears
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// Apply the adapter to the spinner
role.setAdapter(adapter);
}
public void Quiz(View v) { //select a new activity on the basis of role
StringRequest MyStringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
//This code is executed if the server responds, whether or not the response contains data.
//The String 'response' contains the server's response.
}
}, new Response.ErrorListener() { //Create an error listener to handle errors appropriately.
@Override
public void onErrorResponse(VolleyError error) {
//This code is executed if there is an error.
}
}) {
protected Map<String, String> getParams() {
Map<String, String> MyData = new HashMap<String,String>();
MyData.put("Username", username.getText().toString() ); //Add the data you'd like to send to the server.
MyData.put("Password",password.getText().toString());
MyData.put("Role",role.getSelectedItem().toString());
MyData.put("Score","0");
return MyData;
}
};
queue.add(MyStringRequest);
}
}
试试上面的代码
答案 3 :(得分:0)
使用此选项可以帮助您:
SELECT debit, code, credit
FROM table a
WHERE debit > 0
or debit = 0
order by debit code, credit desc
或
SELECT debit, code, credit
FROM table a
WHERE debit > 0
or debit = 0
group by debit, code, credit
order by debit code, credit desc