Fix(parser): allow using OVER token as unquoted identifier (#6338)

Author: georgesittas

sqlglot/parser.py

@@ -544,6 +544,7 @@ class Parser(metaclass=_Parser):
         TokenType.OFFSET,
         TokenType.OPERATOR,
         TokenType.ORDINALITY,
+        TokenType.OVER,
         TokenType.OVERLAPS,
         TokenType.OVERWRITE,
         TokenType.PARTITION,

tests/dialects/test_sqlite.py

@@ -235,6 +235,7 @@ def test_ddl(self):
             with self.subTest(f"ON CONFLICT {conflict_action}"):
                 self.validate_identity("CREATE TABLE a (b, c, UNIQUE (b, c) ON CONFLICT IGNORE)")
 
+        self.validate_identity("CREATE TABLE over (x, y)")
         self.validate_identity("INSERT OR ABORT INTO foo (x, y) VALUES (1, 2)")
         self.validate_identity("INSERT OR FAIL INTO foo (x, y) VALUES (1, 2)")
         self.validate_identity("INSERT OR IGNORE INTO foo (x, y) VALUES (1, 2)")

tests/test_transpile.py

@@ -46,7 +46,7 @@ def test_alias(self):
             "SELECT 1 FROM a.b.table1 AS t UNPIVOT((c3) FOR c4 IN (a, b))",
         )
 
-        for key in ("union", "over", "from", "join"):
+        for key in ("union", "from", "join"):
             with self.subTest(f"alias {key}"):
                 self.validate(f"SELECT x AS {key}", f"SELECT x AS {key}")
                 self.validate(f'SELECT x "{key}"', f'SELECT x AS "{key}"')