SELECT 1,; SELECT 1, FROM numbers(1); WITH 1 as a SELECT a, FROM numbers(1); WITH 1 as from SELECT from, from + from, from in [0], FROM numbers(1); SELECT n, FROM (SELECT 1 AS n); SELECT (1, 'foo')::Tuple(a Int, b String,); SELECT (1, 'foo')::Tuple(a Int, b String,,); -- { clientError SYNTAX_ERROR } SELECT (1, 'foo')::Tuple(Int, String,); SELECT (1, (2,'foo'))::Tuple(Int, Tuple(Int, String,),);