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public class DatabaseHelper extends SQLiteOpenHelper {
public static final String DATABASE_NAME = "Student.db";
public static final String TABLE_NAME = "student_table";
public static final String COL_1 = "ID";
public static final String COL_2 = "NAME";
public static final String COL_3 = "SURNAME";
public static final String COL_4 = "MARKS";
public static final String COL_5 = "DATETIMEZ";
public Cursor NAME_MARKS() {
SQLiteDatabase db = this.getWritableDatabase();
Cursor res = db.rawQuery("select * from " + TABLE_NAME, null);
// ne fonctionne pasRécupération d'une seule colonne ou deux colonnes en studio Android de sqlite
Cursor res = db.rawQuery("select COL_2,COL_3 from " + TABLE_NAME, null);{}
mon application se bloque malheureusement arrêté –