Allow for the case when only a parenthesis separates the RETURNING

clause, as noted in #104.

Author: anthony-tuininga

src/oracledb/impl/thin/statement.pyx

@@ -43,7 +43,7 @@ BIND_PATTERN = r'(?<!"\:)(?<=\:)\s*("[^\"]*"|[^\W\d_][\w\$#]*|\d+)'
 # pattern used for detecting a DML returning clause; bind variables in the
 # first group are input variables; bind variables in the second group are
 # output only variables
-DML_RETURNING_PATTERN = r'(?si)(\s+RETURNING\s+[\s\S]+\s+INTO\s+)(.*?$)'
+DML_RETURNING_PATTERN = r'(?si)([)\s]RETURNING\s+[\s\S]+\s+INTO\s+)(.*?$)'
 
 cdef class BindInfo:
 

tests/test_1600_dml_returning.py

@@ -212,8 +212,7 @@ def test_1607_insert_and_return_object(self):
                                   typename="UDT_OBJECT")
         self.cursor.execute("""
                 insert into TestObjects (IntCol, ObjectCol)
-                values (4, :obj)
-                returning ObjectCol into :outObj""",
+                values (4, :obj)returning ObjectCol into :outObj""",
                 obj=obj, outObj=out_var)
         result, = out_var.getvalue()
         self.assertEqual(result.STRINGVALUE, string_value)