Fixed #16592 -- More test changes and documentation to account for My…

…SQL's casual relationship with sanity. Thanks to Jim Dalton for the report and patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16787 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/ref/databases.txt

@@ -326,6 +326,19 @@ storage engine, you have a couple of options.
 
 .. _AlterModelOnSyncDB: http://code.djangoproject.com/wiki/AlterModelOnSyncDB
 
+Table names
+-----------
+
+There are `known issues`_ in even the latest versions of MySQL that can cause the
+case of a table name to be altered when certain SQL statements are executed
+under certain conditions. It is recommended that you use lowercase table
+names, if possible, to avoid any problems that might arise from this behavior.
+Django uses lowercase table names when it auto-generates table names from
+models, so this is mainly a consideration if you are overriding the table name
+via the :class:`~django.db.models.Options.db_table` parameter.
+
+.. _known issues: http://bugs.mysql.com/bug.php?id=48875
+
 Notes on specific fields
 ------------------------
 

docs/ref/models/options.txt

@@ -61,6 +61,13 @@ If your database table name is an SQL reserved word, or contains characters that
 aren't allowed in Python variable names -- notably, the hyphen -- that's OK.
 Django quotes column and table names behind the scenes.
 
+.. admonition:: Use lowercase table names for MySQL
+
+    It is strongly advised that you use lowercase table names when you override
+    the table name via ``db_table``, particularly if you are using the MySQL
+    backend. See the :ref:`MySQL notes <mysql-notes>` for more details.
+
+
 ``db_tablespace``
 -----------------
 

tests/modeltests/unmanaged_models/models.py

@@ -12,7 +12,7 @@ class A01(models.Model):
     f_b = models.IntegerField()
 
     class Meta:
-        db_table = 'A01'
+        db_table = 'a01'
 
     def __unicode__(self):
         return self.f_a
@@ -23,20 +23,20 @@ class B01(models.Model):
     f_b = models.IntegerField()
 
     class Meta:
-        db_table = 'B01'
+        db_table = 'b01'
         # 'managed' is True by default. This tests we can set it explicitly.
         managed = True
 
     def __unicode__(self):
         return self.f_a
 
 class C01(models.Model):
-    mm_a = models.ManyToManyField(A01, db_table='D01')
+    mm_a = models.ManyToManyField(A01, db_table='d01')
     f_a = models.CharField(max_length=10, db_index=True)
     f_b = models.IntegerField()
 
     class Meta:
-        db_table = 'C01'
+        db_table = 'c01'
 
     def __unicode__(self):
         return self.f_a
@@ -49,15 +49,15 @@ class A02(models.Model):
     f_a = models.CharField(max_length=10, db_index=True)
 
     class Meta:
-        db_table = 'A01'
+        db_table = 'a01'
         managed = False
 
     def __unicode__(self):
         return self.f_a
 
 class B02(models.Model):
     class Meta:
-        db_table = 'B01'
+        db_table = 'b01'
         managed = False
 
     fk_a = models.ForeignKey(A02)
@@ -75,7 +75,7 @@ class C02(models.Model):
     f_b = models.IntegerField()
 
     class Meta:
-        db_table = 'C01'
+        db_table = 'c01'
         managed = False
 
     def __unicode__(self):
@@ -86,7 +86,7 @@ class Intermediate(models.Model):
     c02 = models.ForeignKey(C02, db_column="c01_id")
 
     class Meta:
-        db_table = 'D01'
+        db_table = 'd01'
         managed = False
 
 #