i have a table with dozens of columns (no rows). Is there a hack I can use to mass change all columns in the table to a checkbox column? Possible via a button?
Nope. Sorry. No programmatic access or control to column types.
Best you could do is duplicate 1 column, then select your 2 columns and duplicate it to 4, then select 4 and duplicate to 8, then select 8 and duplicate to 16, then select 16 and duplicate 32. . .
Then rename your columns.
Or somehow with the console in the developer tools of your browser…
But i unfortunately can’t help you with that.