2 files changed, 9 insertions, 1 deletions
diff --git a/django/db/backends/postgresql/operations.py b/django/db/backends/postgresql/operations.py
index e86628ede2..824e0c3e4b 100644
--- a/django/db/backends/postgresql/operations.py
+++ b/django/db/backends/postgresql/operations.py
@@ -3,7 +3,7 @@ from functools import lru_cache, partial
 
 from django.conf import settings
 from django.db.backends.base.operations import BaseDatabaseOperations
-from django.db.backends.postgresql.psycopg_any import Inet, Jsonb
+from django.db.backends.postgresql.psycopg_any import Inet, Jsonb, mogrify
 from django.db.backends.utils import split_tzname_delta
 from django.db.models.constants import OnConflict
 
@@ -174,6 +174,9 @@ class DatabaseOperations(BaseDatabaseOperations):
             return name  # Quoting once is enough.
         return '"%s"' % name
 
+    def compose_sql(self, sql, params):
+        return mogrify(sql, params, self.connection)
+
     def set_time_zone_sql(self):
         return "SET TIME ZONE %s"
 
diff --git a/django/db/backends/postgresql/psycopg_any.py b/django/db/backends/postgresql/psycopg_any.py
index 83e8a9f4d3..e9bb84f313 100644
--- a/django/db/backends/postgresql/psycopg_any.py
+++ b/django/db/backends/postgresql/psycopg_any.py
@@ -24,3 +24,8 @@ def _quote(value, connection=None):
 
 
 sql.quote = _quote
+
+
+def mogrify(sql, params, connection):
+    with connection.cursor() as cursor:
+        return cursor.mogrify(sql, params).decode()