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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2019-09-10 12:46:21 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2019-09-11 01:57:47 -0400 |
| commit | 3b85eeb5d2e662141139ad54ccaad5df24ad9b7d (patch) | |
| tree | 55b1a571d91083fc55306c62dda20d6efd2b9ae7 /lib/sqlalchemy/sql/selectable.py | |
| parent | 7afcb39a962d383e5ba04179c1b13131fb08a787 (diff) | |
| download | sqlalchemy-3b85eeb5d2e662141139ad54ccaad5df24ad9b7d.tar.gz | |
Restore subquery.as_scalar() w/ deprecation
Apparently Alias had an .as_scalar() method, so restore an
equivalent to Subquery with an appropriate deprecation warning.
Fixes: #4854
Change-Id: I6255d61b7d82487ca90ba8ee79d4b3a74e7cbe38
Diffstat (limited to 'lib/sqlalchemy/sql/selectable.py')
| -rw-r--r-- | lib/sqlalchemy/sql/selectable.py | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/selectable.py b/lib/sqlalchemy/sql/selectable.py index 00d3826b2..166e592b6 100644 --- a/lib/sqlalchemy/sql/selectable.py +++ b/lib/sqlalchemy/sql/selectable.py @@ -1753,6 +1753,18 @@ class Subquery(AliasedReturnsRows): roles.SelectStatementRole, selectable ).subquery(name=name) + @util.deprecated( + "1.4", + "The :meth:`.Subquery.as_scalar` method, which was previously " + "``Alias.as_scalar()`` prior to version 1.4, is deprecated and " + "will be removed in a future release; Please use the " + ":meth:`.Select.scalar_subquery` method of the :func:`.select` " + "construct before constructing a subquery object, or with the ORM " + "use the :meth:`.Query.scalar_subquery` method.", + ) + def as_scalar(self): + return self.element.scalar_subquery() + class FromGrouping(GroupedElement, FromClause): """Represent a grouping of a FROM clause""" |