Unexpected Ecto 2.2 behavior

[technicalcapt]

Some resource you can have a look
https://elixir-lang.org/getting-started/binaries-strings-and-char-lists.html

Get ascii value of a character

Here’s two ways to do it: iex(9)> var = "a" "a" iex(10)> <<v::utf8>> = var "a" iex(11)> v 97 iex(12)> var |> String.to_charlist |> hd 97