Allow any unicode character as identifier name (fixes #641).

CHANGELOG

@@ -16,6 +16,7 @@ Bug Fixes
 * Fix formatting error in EXTRACT function (issue562, issue670, pr676, by ecederstrand).
 * Fix bad parsing of create table statements that use lower case (issue217, pr642, by mrmasterplan).
 * Handle backtick as valid quote char (issue628, pr629, by codenamelxl).
+* Allow any unicode character as valid identifier name (issue641).
 
 Other
 

sqlparse/keywords.py

@@ -99,7 +99,7 @@ def is_keyword(value):
         (r'(NOT\s+)?(REGEXP)\b', tokens.Operator.Comparison),
         # Check for keywords, also returns tokens.Name if regex matches
         # but the match isn't a keyword.
-        (r'[0-9_A-ZÀ-Ü][_$#\w]*', is_keyword),
+        (r'[0-9_\w][_$#\w]*', is_keyword),
         (r'[;:()\[\],\.]', tokens.Punctuation),
         (r'[<>=~!]+', tokens.Operator.Comparison),
         (r'[+/@#%^&|^-]+', tokens.Operator),

tests/test_parse.py

@@ -148,6 +148,7 @@ def test_quoted_identifier():
 @pytest.mark.parametrize('name', [
     'foo', '_foo',  # issue175
     '1_data',  # valid MySQL table name, see issue337
+    '業者名稱',  # valid at least for SQLite3, see issue641
 ])
 def test_valid_identifier_names(name):
     t = sqlparse.parse(name)[0].tokens