Ensure nested ordered identifiers are grouped (fixes #745)

Author: john-bodley

sqlparse/engine/grouping.py

@@ -360,6 +360,7 @@ def group_functions(tlist):
         tidx, token = tlist.token_next_by(t=T.Name, idx=tidx)
 
 
+@recurse(sql.Identifier)
 def group_order(tlist):
     """Group together Identifier and Asc/Desc token"""
     tidx, token = tlist.token_next_by(t=T.Keyword.Order)

tests/test_grouping.py

@@ -247,6 +247,14 @@ def test_grouping_identifier_list_with_order():
     assert str(p.tokens[0].tokens[3]) == '2 desc'
 
 
+def test_grouping_nested_identifier_with_order():
+    # issue745
+    p = sqlparse.parse('(a desc)')[0]
+    assert isinstance(p.tokens[0], sql.Parenthesis)
+    assert isinstance(p.tokens[0].tokens[1], sql.Identifier)
+    assert str(p.tokens[0].tokens[1]) == 'a desc'
+
+
 def test_grouping_where():
     s = 'select * from foo where bar = 1 order by id desc'
     p = sqlparse.parse(s)[0]