ApplyOffset for diesel::mysql::Mysql sets mandatory limit parameter

diesel limits bei u64::MAX
https://github.com/diesel-rs/diesel/blob/968e7f79cf6953eb66ddb4256c1e8d5991dc808d/diesel/src/mysql/query_builder/limit_offset.rs#L57
Since GraphQL doesn't know unsigned types, limit is restricted i64::MAX

Author: Alexei Pastuchov

wundergraph/src/query_builder/selection/offset.rs

@@ -6,7 +6,7 @@ use crate::juniper_ext::FromLookAheadValue;
 use crate::query_builder::selection::{BoxedQuery, LoadingHandler};
 use crate::scalar::WundergraphScalarValue;
 use diesel::backend::Backend;
-#[cfg(feature = "sqlite")]
+#[cfg(any(feature = "sqlite", feature = "mysql"))]
 use diesel::query_dsl::methods::LimitDsl;
 #[cfg(any(feature = "postgres", feature = "sqlite", feature = "mysql"))]
 use diesel::query_dsl::methods::OffsetDsl;
@@ -85,13 +85,18 @@ impl ApplyOffset for diesel::mysql::Mysql {
     {
         use juniper::LookAheadMethods;
         if let Some(offset) = select.argument("offset") {
-            Ok(<_ as OffsetDsl>::offset(
+            let q = <_ as OffsetDsl>::offset(
                 query,
                 i64::from_look_ahead(offset.value())
                     .ok_or(WundergraphError::CouldNotBuildFilterArgument)?,
-            ))
+            );
+            if select.argument("limit").is_some() {
+                Ok(q)
+            } else {
+                Ok(<_ as LimitDsl>::limit(q, std::i64::MAX))
+            }
         } else {
             Ok(query)
         }
     }
-}
+}