Convert string column to integer in DB

[WestKeys]

@APB9785

    alter table(:table_name) do
      remove :column_name
      add :column_name, :integer
    end

I believe that would remove all the data under :column_name

You can use modify/3

alter table("posts") do
  modify :title, :text
end

But you still need to handle typecasting the actual data in that column

See this thread Ecto Changeset: modify column type from :string to {:array, :string}