1
SELECT `t1.a` AS `tupleElement(t1, 1)`
FROM t_tuple_element
a
SELECT `t1.s` AS `tupleElement(t1, 2)`
FROM t_tuple_element
1
SELECT `t1.a` AS `tupleElement(t1, \'a\')`
FROM t_tuple_element
2
SELECT `t2.1` AS `tupleElement(t2, 1)`
FROM t_tuple_element
2
SELECT `t2.1` AS `tupleElement(t2, 1)`
FROM t_tuple_element
1	2
WITH (1, 2) AS t
SELECT
    t.1,
    t.2
1	2
WITH CAST(\'(1, 2)\', \'Tuple(a UInt32, b UInt32)\') AS t
SELECT
    t.1,
    tupleElement(t, \'b\')