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-rw-r--r--lib/sqlalchemy/sql/expression.py4
1 files changed, 1 insertions, 3 deletions
diff --git a/lib/sqlalchemy/sql/expression.py b/lib/sqlalchemy/sql/expression.py
index 57770ef42..dfc6bd8fa 100644
--- a/lib/sqlalchemy/sql/expression.py
+++ b/lib/sqlalchemy/sql/expression.py
@@ -2060,9 +2060,7 @@ class BooleanClauseList(ClauseList, ColumnElement):
super(BooleanClauseList, self).__init__(*clauses, **kwargs)
self.type = sqltypes.to_instance(kwargs.get('type_', sqltypes.Boolean))
- def self_group(self, against=None):
- return _Grouping(self)
-
+
class _CalculatedClause(ColumnElement):
"""Describe a calculated SQL expression that has a type, like ``CASE``.