Fix database query error in Create activity handler

CHANGELOG.md

@@ -21,6 +21,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Re-fetch object if `attributedTo` value doesn't match `actor` of `Create` activity.
 - Added actor validation to `Update(Note)` and `Undo(Follow)` handlers.
 
+### Fixed
+
+- Fixed database query error in `Create` activity handler.
+
 ## [1.20.0] - 2023-03-07
 
 ### Added

mitra-models/src/relationships/queries.rs

@@ -360,6 +360,7 @@ pub async fn has_local_followers(
         WHERE
             actor_profile.actor_id = $1
             AND relationship_type = $2
+        LIMIT 1
         ",
         &[&actor_id, &RelationshipType::Follow]
     ).await?;

mitra-models/src/users/queries.rs

@@ -92,6 +92,7 @@ pub async fn create_user(
         SELECT 1
         FROM user_account JOIN actor_profile USING (id)
         WHERE actor_profile.username ILIKE $1
+        LIMIT 1
         ",
         &[&user_data.username],
     ).await?;