Update SQL query to exclude characters without associated user IDs: Modify the QUERY_GET_REGION_CHARACTERS to ensure only characters with a valid user_id are selected, enhancing data integrity and relevance in region-specific character retrieval.

src/worker/sql.rs

@@ -709,7 +709,7 @@ UPDATE falukant_data."character" SET health = $1 WHERE id = $2;
 "#;
 
 pub const QUERY_GET_REGION_CHARACTERS: &str = r#"
-SELECT id, health FROM falukant_data."character" WHERE region_id = $1 AND health > 0;
+SELECT id, health FROM falukant_data."character" WHERE region_id = $1 AND health > 0 AND user_id IS NOT NULL;
 "#;
 
 pub const QUERY_DELETE_DIRECTOR: &str = r#"