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-rw-r--r--lib/sqlalchemy/dialects/mssql/information_schema.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/sqlalchemy/dialects/mssql/information_schema.py b/lib/sqlalchemy/dialects/mssql/information_schema.py
index c37920797..eb8f6db5b 100644
--- a/lib/sqlalchemy/dialects/mssql/information_schema.py
+++ b/lib/sqlalchemy/dialects/mssql/information_schema.py
@@ -25,6 +25,7 @@ ischema = MetaData()
class CoerceUnicode(TypeDecorator):
impl = Unicode
+ cache_ok = True
def process_bind_param(self, value, dialect):
if util.py2k and isinstance(value, util.binary_type):
@@ -211,6 +212,7 @@ class IdentitySqlVariant(TypeDecorator):
correct value as string.
"""
impl = Unicode
+ cache_ok = True
def column_expression(self, colexpr):
return cast(colexpr, Numeric)