pub const LIKE_ESCAPE: char = '!';Expand description
The character escaping the LIKE metacharacters in a bound pattern
(escape_like), to name in the clause: … LIKE ? ESCAPE '!'.
Not the backslash: MySQL reads '\' as an escape inside string literals
(so ESCAPE '\' does not even parse), and SQLite has no default escape
character at all. ! means the same everywhere.