Fix binary collation issues for privs as well

Ref #66

src/server/common.rs

@@ -1,4 +1,5 @@
 use crate::core::common::UnixUser;
+use sqlx::prelude::*;
 
 /// This function creates a regex that matches items (users, databases)
 /// that belong to the user or any of the user's groups.
@@ -9,3 +10,17 @@ pub fn create_user_group_matching_regex(user: &UnixUser) -> String {
         format!("({}|{})(_.+)?", user.username, user.groups.join("|"))
     }
 }
+
+/// Some mysql versions with some collations mark some columns as binary fields,
+/// which in the current version of sqlx is not parsable as string.
+/// See: https://github.com/launchbadge/sqlx/issues/3387
+#[inline]
+pub fn try_get_with_binary_fallback(
+    row: &sqlx::mysql::MySqlRow,
+    column: &str,
+) -> Result<String, sqlx::Error> {
+    row.try_get(column).or_else(|_| {
+        row.try_get::<Vec<u8>, _>(column)
+            .map(|v| String::from_utf8_lossy(&v).to_string())
+    })
+}