3 files changed, 11 insertions, 1 deletions
diff --git a/django/db/backends/base/features.py b/django/db/backends/base/features.py
index b5b6c5b55d..ef1fe88336 100644
--- a/django/db/backends/base/features.py
+++ b/django/db/backends/base/features.py
@@ -345,6 +345,9 @@ class BaseDatabaseFeatures:
     # Set to (exception, message) if null characters in text are disallowed.
     prohibits_null_characters_in_text_exception = None
 
+    # Does the backend support unlimited character columns?
+    supports_unlimited_charfield = False
+
     # Collation names for use by the Django test suite.
     test_collations = {
         "ci": None,  # Case-insensitive.
diff --git a/django/db/backends/postgresql/base.py b/django/db/backends/postgresql/base.py
index ceea1bebad..99403f5322 100644
--- a/django/db/backends/postgresql/base.py
+++ b/django/db/backends/postgresql/base.py
@@ -80,6 +80,12 @@ from .operations import DatabaseOperations  # NOQA isort:skip
 from .schema import DatabaseSchemaEditor  # NOQA isort:skip
 
 
+def _get_varchar_column(data):
+    if data["max_length"] is None:
+        return "varchar"
+    return "varchar(%(max_length)s)" % data
+
+
 class DatabaseWrapper(BaseDatabaseWrapper):
     vendor = "postgresql"
     display_name = "PostgreSQL"
@@ -92,7 +98,7 @@ class DatabaseWrapper(BaseDatabaseWrapper):
         "BigAutoField": "bigint",
         "BinaryField": "bytea",
         "BooleanField": "boolean",
-        "CharField": "varchar(%(max_length)s)",
+        "CharField": _get_varchar_column,
         "DateField": "date",
         "DateTimeField": "timestamp with time zone",
         "DecimalField": "numeric(%(max_digits)s, %(decimal_places)s)",
diff --git a/django/db/backends/postgresql/features.py b/django/db/backends/postgresql/features.py
index 49658cd267..6c20dd87f0 100644
--- a/django/db/backends/postgresql/features.py
+++ b/django/db/backends/postgresql/features.py
@@ -110,3 +110,4 @@ class DatabaseFeatures(BaseDatabaseFeatures):
 
     has_bit_xor = property(operator.attrgetter("is_postgresql_14"))
     supports_covering_spgist_indexes = property(operator.attrgetter("is_postgresql_14"))
+    supports_unlimited_charfield = True