Allow passing a file of code to "sqlite-utils convert"

sqlite-utils is so nice, but the ergonomics of the multiline code in kind of tough. It’s really hard (maybe impossible) to make the newlines play well with Makefiles.

it would be great to write your code fragment in a separate file and direct it into the sqlite-utils

either like

sqlite-utils convert my.db my_table my_column < custom_code.py

or

sqlite-utils convert my.db my_table my_column --custom-code=custom_code.py

Thanks, as ever, for these great tools!

[simonw]

One option: allow CODE to be a special value of - which means “read from standard input”. It’s a tiny bit of a hack but I think it would work here.

If you wanted to replace a column entirely with hyphens you would still be able to do this:

sqlite-utils convert my.db mytable col1 '"-"'

[fgregg]

wow! that’s awesome! thanks so much, @simonw!