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Diffstat (limited to 'alembic/operations/schemaobj.py')
| -rw-r--r-- | alembic/operations/schemaobj.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/alembic/operations/schemaobj.py b/alembic/operations/schemaobj.py index 0568471..799f113 100644 --- a/alembic/operations/schemaobj.py +++ b/alembic/operations/schemaobj.py @@ -89,7 +89,10 @@ class SchemaObjects: t1 = sa_schema.Table( source, m, - *[sa_schema.Column(n, NULLTYPE) for n in t1_cols], + *[ + sa_schema.Column(n, NULLTYPE) + for n in util.unique_list(t1_cols) + ], schema=source_schema, ) |