- move resolution of "starting rev" for --sql mode into

get_current_heads() directly; therefore we don't need to
do this in alembic.command, which we were doing for stamp but
not downgrade/upgrade.  The slight change here is that the
context.get_starting_revision_argument() method will
return an abbreviated starting rev as abbreviated in
all cases, including the stamp command, where we previously
were converting a stamp argument first, but not for the
upgrade or downgrade commands.
- Fixed bug where using a partial revision identifier as the
"starting revision" in ``--sql`` mode in a downgrade operation
would fail to resolve properly.  fixes #269

1 files changed, 0 insertions, 5 deletions

diff --git a/alembic/command.py b/alembic/command.py
index 530af17..5ba6d6a 100644
--- a/alembic/command.py
+++ b/alembic/command.py
@@ -330,9 +330,6 @@ def stamp(config, revision, sql=False, tag=None):
         if not sql:
             raise util.CommandError("Range revision not allowed")
         starting_rev, revision = revision.split(':', 2)
-        starting_rev = script.get_revision(starting_rev)
-        if starting_rev is not None:
-            starting_rev = starting_rev.revision
 
     def do_stamp(rev, context):
         return script._stamp_revs(revision, rev)
@@ -347,5 +344,3 @@ def stamp(config, revision, sql=False, tag=None):
         tag=tag
     ):
         script.run_env()
-
-