/// Formats the given input to a escaped postgres string.
pub
/**
The name of the check constraint enforcing a column's max length
Unlike a column, a constraint has to be named to be dropped again,
so its name has to be derivable from the table and column alone.
It is prefixed with its `table`, mirroring
[`Index::sql_name`](rorm_declaration::imr::Index::sql_name),
to make a constraint violation easy to trace back.
It deliberately doesn't end in `_check`, which is what postgres itself
generates for an unnamed column check, so that it can never collide with a
constraint rorm didn't create.
*/
pub