Fixed #29209 -- Fixed Cast() with TextField on MySQL and Oracle.

2 files changed, 4 insertions, 0 deletions

diff --git a/django/db/backends/mysql/operations.py b/django/db/backends/mysql/operations.py
index 88e47b95ba..2b85be9c56 100644
--- a/django/db/backends/mysql/operations.py
+++ b/django/db/backends/mysql/operations.py
@@ -18,6 +18,7 @@ class DatabaseOperations(BaseDatabaseOperations):
     }
     cast_data_types = {
         'CharField': 'char(%(max_length)s)',
+        'TextField': 'char',
         'IntegerField': 'signed integer',
         'BigIntegerField': 'signed integer',
         'SmallIntegerField': 'signed integer',
diff --git a/django/db/backends/oracle/operations.py b/django/db/backends/oracle/operations.py
index 748f606368..d11072bd2c 100644
--- a/django/db/backends/oracle/operations.py
+++ b/django/db/backends/oracle/operations.py
@@ -51,6 +51,9 @@ END;
 
     # Oracle doesn't support string without precision; use the max string size.
     cast_char_field_without_max_length = 'NVARCHAR2(2000)'
+    cast_data_types = {
+        'TextField': cast_char_field_without_max_length,
+    }
 
     def cache_key_culling_sql(self):
         return """