I live the patch here for others:

original code shell $ which sqlite-utils | xargs cat ```python

!/usr/bin/python3

-- coding: utf-8 --

import re import sys from sqlite_utils.cli import cli

if name == 'main': sys.argv[0] = re.sub(r'(-script.pyw|.exe)?$', '', sys.argv[0]) sys.exit(cli()) ```

patched/sqlite-utils.py ```python

!/usr/bin/python3

-- coding: utf-8 --

import re import sys from sqlite_utils.cli import cli

New imports

from unittest.mock import patch from sqlite_utils.cli import VALID_COLUMN_TYPES

if name == 'main': # Choices of the option --type cli.commands['transform'].params[2].type.types[1].choices.append('DATETIME')

# The dicts has to be extended with a new type
with patch.dict('sqlite_utils.db.COLUMN_TYPE_MAPPING', {'DATETIME': 'DATETIME'}),\
     patch('sqlite_utils.cli.VALID_COLUMN_TYPES', VALID_COLUMN_TYPES + ("DATETIME", )):

    # Command is unchanged
    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
    sys.exit(cli())

```

And now it's working ```bash $ sqlite-utils schema events.sqlite cards.chunk.get CREATE TABLE "cards.chunk.get" ( [id] INTEGER PRIMARY KEY NOT NULL, [timestamp] TEXT, )

$ python patched/sqlite-utils.py transform events.sqlite cards.chunk.get --type timestamp DATETIME

$ sqlite-utils schema events.sqlite cards.chunk.get CREATE TABLE "cards.chunk.get" ( [id] INTEGER PRIMARY KEY NOT NULL, [timestamp] DATETIME, ) ```