And one more, just test cases:

SELECT (1, (1 AS c0, 1 AS c0) IS NULL AS c0), (1, (1, 1 AS c0) IS NULL AS c0) IS NULL AS c0;

Logical error: 'Inconsistent AST formatting: the query:

SELECT (1, (1 AS c0, c0) IS NULL AS c0), (1, c0) IS NULL AS c0

Was parsed and formatted back as:

SELECT (1, (1 AS c0, c0) IS NULL AS c0), c0'.

Originally posted by @PedroTadim in #68296