diff --git a/configs/public_api/http_endpoints/config.json b/configs/public_api/http_endpoints/config.json
index 84e8570b291..816bc7075b3 100644
--- a/configs/public_api/http_endpoints/config.json
+++ b/configs/public_api/http_endpoints/config.json
@@ -1,9 +1,9 @@
 [
   {
-    "name": "/repos/pull_requests/open_to_mer_copy",
+    "name": "/repos/pull_requests/history/siz",
     "description": "",
     "method": "GET",
-    "endpoint": "/repos/pull_requests/open_to_merge_dump_uyQXjT",
+    "endpoint": "/repos/pull_requests/history/size",
     "data_source": {
       "cluster_id": 1379661944642684098
     },
@@ -46,7 +46,7 @@
     },
     "tag": "Default",
     "batch_operation": 0,
-    "sql_file": "sql/GET-repos-pull_requests-open_to_merge_dump_uyQXjT.sql",
+    "sql_file": "sql/GET-repos-pull_requests-history-size.sql",
     "type": "sql_endpoint",
     "return_type": "json"
   },
diff --git a/configs/public_api/http_endpoints/sql/GET-repos-pull_requests-history-size.sql b/configs/public_api/http_endpoints/sql/GET-repos-pull_requests-history-size.sql
new file mode 100644
index 00000000000..76367331ad0
--- /dev/null
+++ b/configs/public_api/http_endpoints/sql/GET-repos-pull_requests-history-size.sql
@@ -0,0 +1,33 @@
+USE gharchive_dev;
+
+SELECT
+  t_month AS event_month, xs, s, m, l, xl, xxl, all_size
+FROM (
+    SELECT
+        t_month,
+        SUM(CASE WHEN (additions + deletions) < 10 THEN 1 ELSE 0 END) OVER(PARTITION BY t_month) AS xs,
+        SUM(CASE WHEN (additions + deletions) >= 10 AND (additions + deletions) < 30 THEN 1 ELSE 0 END) OVER(PARTITION BY t_month) AS s,
+        SUM(CASE WHEN (additions + deletions) >= 30 AND (additions + deletions) < 100 THEN 1 ELSE 0 END) OVER(PARTITION BY t_month) AS m,
+        SUM(CASE WHEN (additions + deletions) >= 100 AND (additions + deletions) < 500 THEN 1 ELSE 0 END) OVER(PARTITION BY t_month) AS l,
+        SUM(CASE WHEN (additions + deletions) >= 500 AND (additions + deletions) < 1000 THEN 1 ELSE 0 END) OVER(PARTITION BY t_month) AS xl,
+        SUM(CASE WHEN (additions + deletions) >= 1000 THEN 1 ELSE 0 END) OVER (PARTITION BY t_month) AS xxl,
+        COUNT(*) OVER (PARTITION BY t_month) AS all_size,
+        ROW_NUMBER() OVER (PARTITION BY t_month) AS row_num
+    FROM (
+        SELECT
+            DATE_FORMAT(created_at, '%Y-%m-01') as t_month,
+            additions,
+            deletions
+        FROM
+            github_events
+        WHERE
+            type = 'PullRequestEvent'
+            AND repo_id = (SELECT repo_id FROM github_repos WHERE repo_name = CONCAT(${owner}, '/', ${repo}) LIMIT 1)
+            AND action = 'opened'
+            AND created_at >= ${from}
+            AND created_at <= ${to}
+    ) sub
+) sub
+WHERE row_num = 1
+ORDER BY t_month
+;
\ No newline at end of file
diff --git a/configs/public_api/http_endpoints/sql/GET-repos-pull_requests-open_to_merge_dump_uyQXjT.sql b/configs/public_api/http_endpoints/sql/GET-repos-pull_requests-open_to_merge_dump_uyQXjT.sql
deleted file mode 100644
index c9a8819e47e..00000000000
--- a/configs/public_api/http_endpoints/sql/GET-repos-pull_requests-open_to_merge_dump_uyQXjT.sql
+++ /dev/null
@@ -1,87 +0,0 @@
-USE gharchive_dev;
-
-with repo AS (
-    SELECT repo_id
-    FROM github_repos
-    WHERE repo_name = CONCAT(${owner}, '/', ${repo})
-    LIMIT 1
-), pr_with_merged_at AS (
-    SELECT
-        number, DATE_FORMAT(created_at, '%Y-%m-01') AS t_month, created_at AS merged_at
-    FROM
-        github_events ge
-    WHERE
-        type = 'PullRequestEvent'
-        -- Considering that some repositories accept the code of the contributor by closing the PR and push commit directly,
-        -- here is not distinguished whether it is the merged event.
-        -- See: https://github.com/mongodb/mongo/pulls?q=is%3Apr+is%3Aclosed
-        AND action = 'closed'
-        AND repo_id = (SELECT repo_id FROM repo)
-        AND created_at >= ${from}
-        AND created_at <= ${to}
-), pr_with_opened_at AS (
-    SELECT
-        number, created_at AS opened_at
-    FROM
-        github_events ge
-    WHERE
-        type = 'PullRequestEvent'
-        AND action = 'opened'
-        -- Exclude Bots
-        -- AND actor_login NOT LIKE '%bot%'
-        -- AND actor_login NOT IN (SELECT login FROM blacklist_users bu)
-        AND repo_id = (SELECT repo_id FROM repo)
-        AND created_at >= ${from}
-        AND created_at <= ${to}
-), tdiff AS (
-    SELECT
-        t_month,
-        (UNIX_TIMESTAMP(pwm.merged_at) - UNIX_TIMESTAMP(pwo.opened_at)) AS diff
-    FROM
-        pr_with_opened_at pwo
-        JOIN pr_with_merged_at pwm ON pwo.number = pwm.number AND pwm.merged_at > pwo.opened_at
-), tdiff_with_rank AS (
-    SELECT
-        tdiff.t_month,
-        diff  / 60 / 60 AS diff,
-        ROW_NUMBER() OVER (PARTITION BY tdiff.t_month ORDER BY diff) AS r,
-        COUNT(*) OVER (PARTITION BY tdiff.t_month) AS cnt,
-        FIRST_VALUE(diff / 60 / 60) OVER (PARTITION BY tdiff.t_month ORDER BY diff) AS p0,
-        FIRST_VALUE(diff / 60 / 60)  OVER (PARTITION BY tdiff.t_month ORDER BY diff DESC) AS p100
-    FROM tdiff
-), tdiff_p25 AS (
-    SELECT
-        t_month, diff AS p25
-    FROM
-        tdiff_with_rank tr
-    WHERE
-        r = ROUND(cnt * 0.25)
-), tdiff_p50 AS (
-    SELECT
-        t_month, diff AS p50
-    FROM
-        tdiff_with_rank tr
-    WHERE
-        r = ROUND(cnt * 0.5)
-), tdiff_p75 AS (
-    SELECT
-        t_month, diff AS p75
-    FROM
-        tdiff_with_rank tr
-    WHERE
-        r = ROUND(cnt * 0.75)
-)
-SELECT
-    tr.t_month AS event_month,
-    ROUND(p0, 2) AS p0,
-    ROUND(p25, 2) AS p25,
-    ROUND(p50, 2) AS p50,
-    ROUND(p75, 2) AS p75,
-    ROUND(p100, 2) AS p100
-FROM tdiff_with_rank tr
-LEFT JOIN tdiff_p25 p25 ON tr.t_month = p25.t_month
-LEFT JOIN tdiff_p50 p50 ON tr.t_month = p50.t_month
-LEFT JOIN tdiff_p75 p75 ON tr.t_month = p75.t_month
-WHERE r = 1
-ORDER BY event_month
-;
\ No newline at end of file