DuckDB dialect parse error: `CTE with USING KEY`

[denis-komarov]

Fully reproducible code snippet

from sqlglot import parse_one
sql='''WITH RECURSIVE tbl(a, b) USING KEY (a) 
AS 
(
  SELECT a, b
  FROM (VALUES (1, 3), (2, 4)) t(a, b)
      UNION
  SELECT a + 1, b
  FROM tbl
  WHERE a < 3
)
SELECT *
FROM tbl;'''
parse_one( sql, dialect = 'duckdb' )

Expecting (. Line 1, Col: 30.
  WITH RECURSIVE tbl(a, b) USING KEY (a) 
AS 
(
  SELECT a, b
  FROM (VALUES (1, 3), (2, 4)) t(a, b)
      UNION
  SELECT a + 1, b
 

Official Documentation
Recursive CTEs with USING KEY

Package Version
sqlglot 27.25.2
sqlglotrs 0.7.2