Question

I am trying to impelement delete function with SQLite database. I have a list which already has some static data(Product_1,_2,_3…), then I add new positions with db.insert. Log say

05:35:10.875    495 example.CustomAdapter   DEBUG       row inserted, ID = 2

05:35:10.885 495 example.CustomAdapter DEBUG ID = 1, name =
05:35:10.885 495 example.CustomAdapter DEBUG ID = 2, name = A1

Everything is OK new positions added and could be seen. Then I delete ID=1 with db.delete(DBHelper.TABLE, DBHelper.COLUMN_ID + id, null); (where id received from long id = acmi.id; AdapterView.AdapterContextMenuInfo acmi = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();)and Log says no such column:

05:35:27.955    495 example.CustomAdapter   ERROR   AndroidRuntime  FATAL EXCEPTION: main

05:35:27.955 495 example.CustomAdapter ERROR AndroidRuntime android.database.sqlite.SQLiteException: no such column: _id5: , while compiling: DELETE FROM mytable WHERE _id5
05:35:27.955 495 example.CustomAdapter ERROR AndroidRuntime at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)

What am I doing wrong? Could it be because I already have four positions filled with static data?

Answer 1

Please read this first: http://en.wikipedia.org/wiki/Column_%28database%29

Then read this:

SQLiteException: no such column: _id5:

You do not have a column called _id5. You have a column called ID which might contain the value 5.

To delete the row (http://en.wikipedia.org/wiki/Row_(database)) with the column ID containing 5:

db.delete(DBHelper.TABLE,"ID=" + id,null);

or

db.delete(DBHelper.TABLE,"ID=?",id);

where id is equal to 5.