diff options
Diffstat (limited to 'sqlglot/optimizer/qualify_columns.py')
| -rw-r--r-- | sqlglot/optimizer/qualify_columns.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sqlglot/optimizer/qualify_columns.py b/sqlglot/optimizer/qualify_columns.py index 6eae2b5..0a31246 100644 --- a/sqlglot/optimizer/qualify_columns.py +++ b/sqlglot/optimizer/qualify_columns.py @@ -93,6 +93,7 @@ def _expand_using(scope, resolver): if column not in columns: columns[column] = k + source_table = ordered[-1] ordered.append(join_table) join_columns = resolver.get_source_columns(join_table) conditions = [] @@ -102,8 +103,10 @@ def _expand_using(scope, resolver): table = columns.get(identifier) if not table or identifier not in join_columns: - raise OptimizeError(f"Cannot automatically join: {identifier}") + if columns and join_columns: + raise OptimizeError(f"Cannot automatically join: {identifier}") + table = table or source_table conditions.append( exp.condition( exp.EQ( |