Change your string query by adding the Where condition like so
String selectQuery = "SELECT some_column FROM " + AI_TABLE + " WHERE some_field = ?" ;
Then just add a selection argument when you query the DB
Cursor c = db.rawQuery (selectQuery, new String[] {"SOME_VALUE"} );
This will only return some_column to the cursor where some_field equals “SOME_VALUE”
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solved retrieving one string value from cursor