АМ
let data_file_path = std::path::Path::new(&manifest_dir).join("sqlx-data.json");
if data_file_path.exists() {
expand_from_file(input, data_file_path)
} else {
Err(
"`DATABASE_URL` must be set, or `cargo sqlx prepare` must have been run \
and sqlx-data.json must exist, to use query macros"
.into(),
)
}