Fixed #29198 -- Added migrate --plan option.

tests/migrations/test_migrations_plan/0003_third.py

@@ -0,0 +1,19 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('migrations', '0002_second'),
+    ]
+
+    operations = [
+
+        migrations.CreateModel(
+            'Author',
+            [
+                ('id', models.AutoField(primary_key=True)),
+            ],
+        ),
+        migrations.RunSQL('SELECT * FROM migrations_author', 'SELECT * FROM migrations_book')
+    ]