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-rw-r--r--lib/sqlalchemy/dialects/mysql/pyodbc.py24
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/sqlalchemy/dialects/mysql/pyodbc.py b/lib/sqlalchemy/dialects/mysql/pyodbc.py
index 6866c3f42..9a18b5090 100644
--- a/lib/sqlalchemy/dialects/mysql/pyodbc.py
+++ b/lib/sqlalchemy/dialects/mysql/pyodbc.py
@@ -23,6 +23,7 @@
"""
import re
+import sys
from .base import MySQLDialect
from .base import MySQLExecutionContext
@@ -86,5 +87,28 @@ class MySQLDialect_pyodbc(PyODBCConnector, MySQLDialect):
else:
return None
+ def on_connect(self):
+ super_ = super(MySQLDialect_pyodbc, self).on_connect()
+
+ def on_connect(conn):
+ if super_ is not None:
+ super_(conn)
+
+ # declare Unicode encoding for pyodbc as per
+ # https://github.com/mkleehammer/pyodbc/wiki/Unicode
+ pyodbc_SQL_CHAR = 1 # pyodbc.SQL_CHAR
+ pyodbc_SQL_WCHAR = -8 # pyodbc.SQL_WCHAR
+ if sys.version_info.major > 2:
+ conn.setdecoding(pyodbc_SQL_CHAR, encoding='utf-8')
+ conn.setdecoding(pyodbc_SQL_WCHAR, encoding='utf-8')
+ conn.setencoding(encoding='utf-8')
+ else:
+ conn.setdecoding(pyodbc_SQL_CHAR, encoding='utf-8')
+ conn.setdecoding(pyodbc_SQL_WCHAR, encoding='utf-8')
+ conn.setencoding(str, encoding='utf-8')
+ conn.setencoding(unicode, encoding='utf-8')
+
+ return on_connect
+
dialect = MySQLDialect_pyodbc