在SQLite数据库错误插入时间戳列 [英] Error Inserting TimeStamp column in SQLite Database
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问题描述
我尝试添加时间戳字段在我的SQLite表，请参阅下面我的code：
I am trying to add TimeStamp field in my SQLite Table, see my code below:
的 myDBClass.java 的
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
// Create Table Name
db.execSQL("CREATE TABLE " + TABLE_MEMBER +
"(OperatorID INTEGER PRIMARY KEY AUTOINCREMENT," +
" DeviceID TEXT(100)," +
" EmailID TEXT(100)," +
" Operator TEXT(100)," +
" Created_at DATETIME DEFAULT CURRENT_TIMESTAMP);");
Log.d("CREATE TABLE","Create Table Successfully.");
}
// Insert Data
public long InsertData(String strDeviceID, String strEmailID, String strEventOperator, String strCreated_at) {
// TODO Auto-generated method stub
try {
SQLiteDatabase db;
db = this.getWritableDatabase(); // Write Data
ContentValues Val = new ContentValues();
Val.put("DeviceID", strDeviceID);
Val.put("EmailID", strEmailID);
Val.put("Operator", strEventOperator);
Val.put("Created_at", getDateTime());
long rows = db.insert(TABLE_MEMBER, null, Val);
db.close();
return rows; // return rows inserted.
} catch (Exception e) {
return -1;
}
}
private String getDateTime() {
SimpleDateFormat dateFormat = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss", Locale.getDefault());
Date date = new Date();
return dateFormat.format(date);
}
// Select Data
public String[] SelectData(String strOperatorID) {
// TODO Auto-generated method stub
try {
String arrData[] = null;
SQLiteDatabase db;
db = this.getReadableDatabase(); // Read Data
Cursor cursor = db.query(TABLE_MEMBER, new String[] { "*" },
"OperatorID=?",
new String[] { String.valueOf(strOperatorID) }, null, null, null, null);
if(cursor != null)
{
if (cursor.moveToFirst()) {
arrData = new String[cursor.getColumnCount()];
/***
* 0 = DeviceID
* 1 = EmailID
* 2 = EventOperator
*/
arrData[0] = cursor.getString(0);
arrData[1] = cursor.getString(1);
arrData[2] = cursor.getString(2);
}
}
cursor.close();
db.close();
return arrData;
} catch (Exception e) {
return null;
}
}
的 AddActivity.java 的
public boolean SaveData()
{
final EditText editDeviceID = (EditText) findViewById(R.id.editDeviceID);
final EditText editEmailID = (EditText) findViewById(R.id.editEmailID);
final EditText editEveOpe = (EditText) findViewById(R.id.editEveOpe);
// Dialog
final AlertDialog.Builder adb = new AlertDialog.Builder(this);
AlertDialog ad = adb.create();
// new Class DB
final myDBClass myDb = new myDBClass(this);
// Save Data
long saveStatus = myDb.InsertData(
editDeviceID.getText().toString(),
editEmailID.getText().toString(),
editEveOpe.getText().toString()
);
if(saveStatus <= 0)
{
ad.setMessage("Error!! ");
ad.show();
return false;
}
Toast.makeText(AddActivity.this,"Added Data Successfully. ",
Toast.LENGTH_SHORT).show();
return true;
}
}
的日志：的
12-19 01:39:08.147: E/SQLiteLog(6963): (1) table members has no column named Created_at
12-19 01:39:08.203: E/SQLiteDatabase(6963): Error inserting DeviceID=safdasfewrwesd23432 Created_at=2013-12-19 01:39:08 EventOperator=adsfewvweceEvent EmailID=sdfasdf@desa.cond
12-19 01:39:08.203: E/SQLiteDatabase(6963): android.database.sqlite.SQLiteException: table members has no column named Created_at (code 1): , while compiling: INSERT INTO members(DeviceID,Created_at,EventOperator,EmailID) VALUES (?,?,?,?)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1467)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at com.example.database.myDBClass.InsertData(myDBClass.java:59)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at com.example.database.AddActivity.SaveData(AddActivity.java:49)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at com.example.database.AddActivity$1.onClick(AddActivity.java:26)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.view.View.performClick(View.java:4240)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.view.View$PerformClick.run(View.java:17721)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.os.Handler.handleCallback(Handler.java:730)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.os.Handler.dispatchMessage(Handler.java:92)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.os.Looper.loop(Looper.java:137)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at android.app.ActivityThread.main(ActivityThread.java:5103)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at java.lang.reflect.Method.invokeNative(Native Method)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at java.lang.reflect.Method.invoke(Method.java:525)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
12-19 01:39:08.203: E/SQLiteDatabase(6963): at dalvik.system.NativeStart.main(Native Method)
12-19 01:39:08.434: D/dalvikvm(6963): GC_FOR_ALLOC freed 138K, 7% free 3169K/3384K, paused 28ms, total 38ms
我得到的表成员有没有列的命名Created_at
我有点混淆使用什么在插入查询的 * Created_at列* *的（AddActivity.java）的*
I am little bit confuse what to use for *Created_at column in Insert Query* *(AddActivity.java)*
在我的成员表仍然字段：OperatorID，的DeviceID，EMAILID，操作员，但我也尝试添加的 Created_at 的成员表中的字段，但面临的问题
Still in my members table, fields are: OperatorID, DeviceID, EmailID, Operator but i am also trying to add Created_at field in members table., but facing problem
推荐答案
有像 DATETIME SQLite中没有任何数据类型。所以只要改变你的code象下面这样：
There is no datatype like DATETIME in sqlite. so just change your code like below:
db.execSQL("CREATE TABLE " + TABLE_MEMBER +
"(OperatorID INTEGER PRIMARY KEY AUTOINCREMENT," +
" DeviceID TEXT(100)," +
" EmailID TEXT(100)," +
" Operator TEXT(100)," +
" Created_at TIMESTAMP NOT NULL DEFAULT current_timestamp);");
这篇关于在SQLite数据库错误插入时间戳列的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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