Sqlite: multiple update (find and replace) case insensitive

Question

I use DB Browser for SQLite to visualize and update an sqlite file.

I am able to do run a case sensitive query to update some text like this:

UPDATE ite         


        

Answer 1

Nosyara answer works great but it only removes 1 instance at a time.

I also tried this from here:

UPDATE itemNotes  
SET 
  note = SUBSTR(note, 0, INSTR(LOWER(note), 'sometext')) || 'abc' || SUBSTR(note, INSTR(LOWER(note), 'sometext')+sometext_len)
WHERE 
  note LIKE "%sometext%";

But when I have many occurence of sometext in a field note, then only the first on is removed. Based on a comment on this question, I ended up using python to replace the sqlite, see here

Answer 2

You need to search substring in LOWER(note), but replace it in original. I don't know where you getting sometext from, assume that you can check it's length. In following example I'll use constant.

UPDATE itemNotes  
SET 
  note = SUBSTR(note, 0, INSTR(LOWER(note), 'sometext')) || 'abc' || SUBSTR(note, INSTR(LOWER(note), 'sometext')+sometext_len)
WHERE 
  INSTR(LOWER(note), 'sometext') >= 0;

!Note: It will work only for one replace at a time.