diff --git a/crates/tests/databases-tests/src/postgres/explain_tests.rs b/crates/tests/databases-tests/src/postgres/explain_tests.rs
index 29459b684..8c93710d2 100644
--- a/crates/tests/databases-tests/src/postgres/explain_tests.rs
+++ b/crates/tests/databases-tests/src/postgres/explain_tests.rs
@@ -53,3 +53,33 @@ mod query {
         insta::assert_snapshot!(result.details.query);
     }
 }
+
+#[cfg(test)]
+mod mutation {
+    use super::super::common::create_router;
+    use tests_common::assert::is_contained_in_lines;
+    use tests_common::request::run_mutation_explain;
+
+    #[tokio::test]
+    async fn delete_playlist_track() {
+        let result = run_mutation_explain(create_router().await, "delete_playlist_track").await;
+        // is_contained_in_lines(vec!["Aggregate", "Scan", "35"], result.details.plan);
+        insta::assert_snapshot!(result
+            .details
+            .get("delete_playlist_track SQL Mutation")
+            .unwrap());
+    }
+
+    #[tokio::test]
+    async fn insert_artist_album() {
+        let result = run_mutation_explain(create_router().await, "insert_artist_album").await;
+        // is_contained_in_lines(vec!["Aggregate", "Scan", "35"], result.details.plan);
+        let queries = vec![
+            result.details.get("insert_artist SQL Mutation").unwrap(),
+            "\n\n\n",
+            result.details.get("insert_album SQL Mutation").unwrap(),
+        ]
+        .concat();
+        insta::assert_snapshot!(queries);
+    }
+}
diff --git a/crates/tests/databases-tests/src/postgres/mutation_tests.rs b/crates/tests/databases-tests/src/postgres/mutation_tests.rs
index a4923438a..0b041d1eb 100644
--- a/crates/tests/databases-tests/src/postgres/mutation_tests.rs
+++ b/crates/tests/databases-tests/src/postgres/mutation_tests.rs
@@ -6,7 +6,7 @@ mod basic {
     use tests_common::request::{run_mutation, run_query};
 
     #[tokio::test]
-    async fn delete_playlist() {
+    async fn delete_playlist_track() {
         let ndc_metadata = create_fresh_ndc_metadata(
             common::CONNECTION_STRING,
             common::CHINOOK_NDC_METADATA_PATH_V2,
@@ -17,7 +17,7 @@ mod basic {
         let result = run_mutation(
             tests_common::router::create_router_from_ndc_metadata(&ndc_metadata.ndc_metadata_path)
                 .await,
-            "delete_playlist",
+            "delete_playlist_track",
         )
         .await;
 
diff --git a/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__explain_tests__mutation__delete_playlist_track.snap b/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__explain_tests__mutation__delete_playlist_track.snap
new file mode 100644
index 000000000..073749c48
--- /dev/null
+++ b/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__explain_tests__mutation__delete_playlist_track.snap
@@ -0,0 +1,40 @@
+---
+source: crates/tests/databases-tests/src/postgres/explain_tests.rs
+expression: "result.details.get(\"delete_playlist_track SQL Mutation\").unwrap()"
+---
+EXPLAIN WITH "%0_NATIVE_QUERY_delete_playlist_track" AS (
+  DELETE FROM
+    public."PlaylistTrack"
+  WHERE
+    "TrackId" = 90 RETURNING *
+)
+SELECT
+  row_to_json("%2_universe") AS "universe"
+FROM
+  (
+    SELECT
+      *
+    FROM
+      (
+        SELECT
+          json_build_array(
+            json_build_object(
+              '__value',
+              coalesce(json_agg(row_to_json("%3_returning")), '[]')
+            )
+          ) AS "returning"
+        FROM
+          (
+            SELECT
+              "%1_delete_playlist_track"."PlaylistId" AS "playlist_id"
+            FROM
+              "%0_NATIVE_QUERY_delete_playlist_track" AS "%1_delete_playlist_track"
+          ) AS "%3_returning"
+      ) AS "%3_returning"
+      CROSS JOIN (
+        SELECT
+          COUNT(*) AS "affected_rows"
+        FROM
+          "%0_NATIVE_QUERY_delete_playlist_track" AS "%1_delete_playlist_track"
+      ) AS "%4_aggregates"
+  ) AS "%2_universe"
diff --git a/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__explain_tests__mutation__insert_artist_album.snap b/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__explain_tests__mutation__insert_artist_album.snap
new file mode 100644
index 000000000..3430b46f8
--- /dev/null
+++ b/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__explain_tests__mutation__insert_artist_album.snap
@@ -0,0 +1,106 @@
+---
+source: crates/tests/databases-tests/src/postgres/explain_tests.rs
+expression: queries
+---
+EXPLAIN WITH "%0_NATIVE_QUERY_insert_artist" AS (
+  INSERT INTO
+    public."Artist"
+  VALUES
+    (276, cast($1 as varchar)) RETURNING *
+)
+SELECT
+  row_to_json("%2_universe") AS "universe"
+FROM
+  (
+    SELECT
+      *
+    FROM
+      (
+        SELECT
+          json_build_array(
+            json_build_object(
+              '__value',
+              coalesce(json_agg(row_to_json("%3_returning")), '[]')
+            )
+          ) AS "returning"
+        FROM
+          (
+            SELECT
+              "%1_insert_artist"."ArtistId" AS "artist_id",
+              "%1_insert_artist"."Name" AS "name"
+            FROM
+              "%0_NATIVE_QUERY_insert_artist" AS "%1_insert_artist"
+          ) AS "%3_returning"
+      ) AS "%3_returning"
+      CROSS JOIN (
+        SELECT
+          COUNT(*) AS "affected_rows"
+        FROM
+          "%0_NATIVE_QUERY_insert_artist" AS "%1_insert_artist"
+      ) AS "%4_aggregates"
+  ) AS "%2_universe"
+
+
+EXPLAIN WITH "%0_NATIVE_QUERY_insert_album" AS (
+  INSERT INTO
+    public."Album"
+  VALUES
+(348, cast($1 as varchar), 276) RETURNING *
+)
+SELECT
+  row_to_json("%6_universe") AS "universe"
+FROM
+  (
+    SELECT
+      *
+    FROM
+      (
+        SELECT
+          json_build_array(
+            json_build_object(
+              '__value',
+              coalesce(json_agg(row_to_json("%7_returning")), '[]')
+            )
+          ) AS "returning"
+        FROM
+          (
+            SELECT
+              "%1_insert_album"."AlbumId" AS "album_id",
+              "%1_insert_album"."Title" AS "title",
+              "%2_RELATIONSHIP_artist"."artist" AS "artist"
+            FROM
+              "%0_NATIVE_QUERY_insert_album" AS "%1_insert_album"
+              LEFT OUTER JOIN LATERAL (
+                SELECT
+                  row_to_json("%2_RELATIONSHIP_artist") AS "artist"
+                FROM
+                  (
+                    SELECT
+                      *
+                    FROM
+                      (
+                        SELECT
+                          coalesce(json_agg(row_to_json("%4_rows")), '[]') AS "rows"
+                        FROM
+                          (
+                            SELECT
+                              "%3_Artist"."Name" AS "name"
+                            FROM
+                              "public"."Artist" AS "%3_Artist"
+                            WHERE
+                              (
+                                "%1_insert_album"."ArtistId" = "%3_Artist"."ArtistId"
+                              )
+                          ) AS "%4_rows"
+                      ) AS "%4_rows"
+                  ) AS "%2_RELATIONSHIP_artist"
+              ) AS "%2_RELATIONSHIP_artist" ON ('true')
+          ) AS "%7_returning"
+      ) AS "%7_returning"
+      CROSS JOIN (
+        SELECT
+          COUNT(*) AS "affected_rows"
+        FROM
+          "%0_NATIVE_QUERY_insert_album" AS "%1_insert_album"
+      ) AS "%8_aggregates"
+  ) AS "%6_universe"
diff --git a/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__mutation_tests__basic__delete_playlist.snap b/crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__mutation_tests__basic__delete_playlist_track.snap
similarity index 100%
rename from crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__mutation_tests__basic__delete_playlist.snap
rename to crates/tests/databases-tests/src/postgres/snapshots/databases_tests__postgres__mutation_tests__basic__delete_playlist_track.snap
diff --git a/crates/tests/tests-common/goldenfiles/mutations/delete_playlist.json b/crates/tests/tests-common/goldenfiles/mutations/delete_playlist_track.json
similarity index 100%
rename from crates/tests/tests-common/goldenfiles/mutations/delete_playlist.json
rename to crates/tests/tests-common/goldenfiles/mutations/delete_playlist_track.json
diff --git a/crates/tests/tests-common/src/request.rs b/crates/tests/tests-common/src/request.rs
index dac5ce287..d7a402b61 100644
--- a/crates/tests/tests-common/src/request.rs
+++ b/crates/tests/tests-common/src/request.rs
@@ -16,6 +16,11 @@ pub async fn run_query422(router: axum::Router, testname: &str) -> ndc_sdk::mode
     run_against_server(router, "query", testname, StatusCode::UNPROCESSABLE_ENTITY).await
 }
 
+#[derive(Clone, Debug, PartialEq, Deserialize)]
+pub struct InexactExplainResponse {
+    pub details: std::collections::BTreeMap<String, String>,
+}
+
 #[derive(Clone, Debug, PartialEq, Deserialize)]
 pub struct ExactExplainResponse {
     pub details: ExplainDetails,
@@ -34,6 +39,17 @@ pub async fn run_query_explain(router: axum::Router, testname: &str) -> ExactExp
     run_against_server(router, "query/explain", testname, StatusCode::OK).await
 }
 
+/// Run a mutation against the server, get the result, and compare against the snapshot.
+pub async fn run_mutation_explain(router: axum::Router, testname: &str) -> InexactExplainResponse {
+    run_against_server(
+        router,
+        "mutation/explain",
+        &format!("mutations/{}", testname),
+        StatusCode::OK,
+    )
+    .await
+}
+
 /// Run a mutation against the server, get the result, and compare against the snapshot.
 pub async fn run_mutation(
     router: axum::Router,