Qu'est-ce que je me suis trompé?

Question

public Cursor getChart(String sign) { 
    return db.query(CHART_TABLE, new String[] { 
      KEY_CHART_ID, 
      KEY_SIGN, 
      KEY_TOTAL }, 
      KEY_SIGN + "=" + sign, 
      null, null, null, null, null); 
} 

05-09 17:14:39.260: ERROR/AndroidRuntime(14935): android.database.sqlite.SQLiteException: near "+": syntax error: , while compiling: SELECT _id, sign, total FROM ChartTable WHERE sign=+ 

Answer 1

mauvaise manière de base de données interroger. Essayez ceci ..

public Cursor getChart(String sign) { 
    return db.query(CHART_TABLE, new String[] { 
      KEY_CHART_ID, 
      KEY_SIGN, 
      KEY_TOTAL }, 
      "KEY_SIGN =?", new String[]{sign}, 
      null, null, null); 
}