Question

hello i use this code for diplay my conversation list

private Cursor getMessages( SQLiteDatabase db, boolean justNewMessages) {


    final String table = Constants.TABLE_CONVERSATION;
                                                                            //index
    final String[] columns = { Constants.TABLE_CONVERSATION_FIELD_ID,       //0
                               Constants.TABLE_CONVERSATION_FIELD_DATE,     //1
                               Constants.TABLE_CONVERSATION_FIELD_FROM,     //2
                               Constants.TABLE_CONVERSATION_FIELD_TO,       //3
                               Constants.TABLE_CONVERSATION_FIELD_MSG       //4
        };

    String selection;

    if(justNewMessages) {
        selection = "(" + Constants.TABLE_CONVERSATION_FIELD_FROM + " = '" + jid +"' or "
                        + Constants.TABLE_CONVERSATION_FIELD_TO + " = '" + jid + "') and "
                        + Constants.TABLE_CONVERSATION_FIELD_NEW + " = '1'";
    } else {
        selection = "(" + Constants.TABLE_CONVERSATION_FIELD_FROM + " = '" + jid +"' or "
                        + Constants.TABLE_CONVERSATION_FIELD_TO + " = '" + jid + "')";
    }

    final String[] selectionArgs = null;
    final String groupBy = null;
    final String having = null;
    final String orderBy = Constants.TABLE_CONVERSATION_FIELD_DATE;

    return db.query(table, columns, selection, selectionArgs, groupBy, having, orderBy);
}

I would like select 10 last i try

final String orderBy = Constants.TABLE_CONVERSATION_FIELD_DATE + " DESC LIMIT 10";

it is the last conversation, but reversed(the last word is up) how Select only 10 last conversation
OR delete and leaves the 10 last conversation and display this … Cant you help me to start idea I do not understand …

Answer 1

FIXED Thanks for the tips it’s the solution, thanks thanks thanks

Fixed by

final String tableff ="Select "+Constants.TABLE_CONVERSATION_FIELD_ID+","+Constants.TABLE_CONVERSATION_FIELD_DATE+","+Constants.TABLE_CONVERSATION_FIELD_FROM+","+Constants.TABLE_CONVERSATION_FIELD_TO+","+Constants.TABLE_CONVERSATION_FIELD_MSG+" from ["+table+"] WHERE "+selection+" LIMIT ((Select count(["+Constants.TABLE_CONVERSATION_FIELD_DATE+"]) from ["+table+"] WHERE "+selection+")-10),10";

    return db.rawQuery(tableff, selectionArgs);