sqlite query failing - no such column

Question

I have a db that is created like this...

public class DataBaseManager extends SQLiteOpenHelper{

    Context mContext;
    private static final String TAG =          


        

Answer 1

Change your old query "SELECT "+colID+ " FROM " + allScreens + " WHERE " + colName + "=" +name; to

 "SELECT "+colID+ " FROM " + allScreens + " WHERE " + colName + "='" +name+"'";

Answer 2

Your query String is wrong

String selectQuery = "SELECT "+colID+ " FROM " + allScreens + " WHERE " + colName + " = '" +name + "'";

the name you give in where should be in single quotes

Answer 3

Do it like this:

String selectQuery = String.format("SELECT %s FROM %s WHERE %s = ?",
    colID, allScreens, colName);

Cursor c = db.rawQuery(selectQuery, new String[]{name});

Answer 4

Your query is wrong, as WHERE column = string will not work.

String selectQuery = "SELECT "+colID+ " FROM " + allScreens + " WHERE " + colName + "=?";
Cursor c = db.rawQuery(selectQuery, new String[] {name});

Use ? which will be replaced by the second rawQuery() parameter. Strongly recommended.

Not recommended: WHERE column = "string"

Answer 5

name = DR_home means "column name equals column DR_home. You probably want to quote it if you want to string search (which I surmise you do, but I haven't peeked your code in depth since it's too long): name = 'DR_Home'.