Question

When I try to put some condition value into ContentValues variable, there is inserting as String.

contentValues = new ContentValues();
contentValues.put("DLM", "julianday('now', 'localtime')");

After executing

count = db.update(TABLE_NAME, contentValues, selection, selectionArgs);

the field is updated but the value is incorrect. I need to have the numeric date in the field, not string.

Another problem if I need to update existing field with the calculated value:

UPDATE tbl SET field=field*2

When I put the value like

contentValues.put("field", "field*2");

It has put the value as String. How I can get the value I really needed?

Answer 1

I think instead of update() method you should use execSQL method which allows you completely control the query syntax. Also instead of calculating fields in query you might consider creating triggers.