[英]SQLITE Error for Create table
我正進入(狀態
>android.database.sqlite.SQLiteException: near "tb_quiz": syntax error (code 1):
排隊
> @Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE table IF NOT EXISTS tb_quiz");
Log.e("--------------", "file table created");
}
請幫助一些。。。謝謝。
您不能創建空表。 必須至少指定一列: https : //sqlite.org/lang_createtable.html
表不能為空,請嘗試按以下方式編寫一些列:
CREATE TABLE IF NOT EXISTS table_name (
column1 datatype,
column2 datatype,
column3 datatype,
....
);
"CREATE TABLE IF NOT EXISTS tb_quiz "
+ "(" + COLUMN_ID
+ " integer primary key autoincrement, " + COLUMN_COMMENT+ " text");
您應該提供表的架構。
請使用以下查詢創建表字符串CREATE_CLASS_TABLE =“ CREATE TABLE class_table(class_id INTEGER,class_name TEXT)”
嘗試這個,
public class DataBaseHelper extends SQLiteOpenHelper {
private static final String TAG = "DataBaseHelper";
// Database Name
private static final String DATABASE_NAME = "MYAPP";
// Database Version
private static final int DATABASE_VERSION = 1;
private static final String TABLE_USER = "user_info";
// Common column names TABLE_USER
private static final String KEY_ID = "id";
private static final String KEY_USERNAME = "u_name";
private static final String KEY_PASSWORD = "u_pwd";
private static final String CREATE_TABLE_USER = "CREATE TABLE IF NOT EXISTS " + TABLE_USER
+ "(" + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT,"
+ KEY_USERNAME + " TEXT,"
+ KEY_PASSWORD + " TEXT"
+ ")";
public DataBaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
// creating required tables
db.execSQL(CREATE_TABLE_USER);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// Drop older table if existed
db.execSQL("DROP TABLE IF EXISTS " + CREATE_TABLE_USER);
// Create tables again
onCreate(db);
}
}
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