Fix parsing of PRIMARY KEY (fixes #740).

CHANGELOG

@@ -23,7 +23,8 @@ Bug Fixes
 * Fix parsing of nested order clauses (issue745, pr746 by john-bodley).
 * Thread-safe initialization of Lexer class (issue730).
 * Classify TRUNCATE as DDL and GRANT/REVOKE as DCL keywords (based on pr719
-  by josuc1, thanks for bringing this up!)
+  by josuc1, thanks for bringing this up!).
+* Fix parsing of PRIMARY KEY (issue740).
 
 
 Release 0.4.4 (Apr 18, 2023)

sqlparse/keywords.py

@@ -77,6 +77,7 @@
     (r'DOUBLE\s+PRECISION\b', tokens.Name.Builtin),
     (r'GROUP\s+BY\b', tokens.Keyword),
     (r'ORDER\s+BY\b', tokens.Keyword),
+    (r'PRIMARY\s+KEY\b', tokens.Keyword),
     (r'HANDLER\s+FOR\b', tokens.Keyword),
     (r'GO(\s\d+)\b', tokens.Keyword),
     (r'(LATERAL\s+VIEW\s+)'

tests/test_regressions.py

@@ -444,3 +444,9 @@ def test_copy_issue672():
     p = sqlparse.parse('select * from foo')[0]
     copied = copy.deepcopy(p)
     assert str(p) == str(copied)
+
+
+def test_primary_key_issue740():
+    p = sqlparse.parse('PRIMARY KEY')[0]
+    assert len(p.tokens) == 1
+    assert p.tokens[0].ttype == T.Keyword