Delete one row from the database - sql

Question

I'm having a problem deleting just one row. I can insert and delete the whole table. I'm not able to understand the whole ID thing in order to delete just one row. I was looking at some examples, but I couldn't get it. It’s driving me crazy.
Here is the SQLite class;
public class datahelper {
private static final String DATABASE_NAME = "table.db";
private static final int DATABASE_VERSION = 1;
private static final String TABLE_NAME = "table1";
private Context context;
private SQLiteDatabase db;
private SQLiteStatement insertStmt;
private static final String INSERT =
"insert into " + TABLE_NAME + "(name) values (?)";
public datahelper(Context context) {
this.context = context;
OpenHelper openHelper = new OpenHelper(this.context);
this.db = openHelper.getWritableDatabase();
this.insertStmt = this.db.compileStatement(INSERT);
}
public long insert(String name) {
this.insertStmt.bindString(1, name);
return this.insertStmt.executeInsert();
}
public long insert2(String name) {
this.insertStmt2.bindString(1, name);
return this.insertStmt2.executeInsert();
}
public void deleteAll() {
this.db.delete(TABLE_NAME, null, null);
}
private static class OpenHelper extends SQLiteOpenHelper {
OpenHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
#Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE " + TABLE_NAME +
" (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT)");
}
}

Answer 1

Execute the query
DELETE FROM TABLE_NAME WHERE id = SOMEVALUE

Answer 2

It looks like you are using this API, which provides this delete method. My guess is that you would do this:
public void delete(int id) {
this.db.delete(TABLE_NAME, 'id = ?', new String[] { id.toString() });
}
(Original answer...)
Use a DELETE statement with a WHERE clause that deletes only the row with the id you want to remove:
DELETE FROM <tablename> WHERE id = ?
Of course, you need to know the id in order to do this. SQLite provides a function — sqlite3_last_insert_rowid() — that you can call immediately after an INSERT. If your API doesn't provide this function directly, you can get it indirectly via the equivalent SQL function:
SELECT last_insert_rowid()
Alernatively if you want to delete a certain name (assuming it's unique):
DELETE FROM <tablename> WHERE name = ?