Ticket #23843: oracle_nvarchar.diff

tests/annotations/tests.py

@@ -3 +3 @@
 from decimal import Decimal
 
 from django.core.exceptions import FieldError
+from django.db import connection
 from django.db.models import (
     Sum, Count,
     F, Value, Func,
@@ -235 +236 @@
         Company(name='Google', motto='Do No Evil', ticker_name='GOOG', description='Internet Company').save()
         Company(name='Yahoo', motto=None, ticker_name=None, description='Internet Company').save()
 
+        val = Value('No Tag')
+        if connection.vendor == 'oracle':
+            val = Func(val, function='CAST',
+                       template='%(function)s(%(expressions)s AS nvarchar2(30))')
+
         qs = Company.objects.annotate(
             tagline=Func(
                 F('motto'),
                 F('ticker_name'),
                 F('description'),
-                Value('No Tag'),
+                val,
                 function='COALESCE')
             ).order_by('name')
 
@@ -263 +269 @@
         class Lower(Func):
             function = 'LOWER'
 
+        val = Value('No Tag')
+        if connection.vendor == 'oracle':
+            val = Func(val, function='CAST',
+                       template='%(function)s(%(expressions)s AS nvarchar2(30))')
+
         qs = Company.objects.annotate(
             tagline=Func(
                 F('motto'),
                 F('ticker_name'),
                 F('description'),
-                Value('No Tag'),
+                val,
                 function='COALESCE')
         ).annotate(
             tagline_lower=Lower(F('tagline'), output_field=CharField())