DROP TABLE IF EXISTS t_tuple_element; CREATE TABLE t_tuple_element(t1 Tuple(a UInt32, s String), t2 Tuple(UInt32, String)) ENGINE = Memory; INSERT INTO t_tuple_element VALUES ((1, 'a'), (2, 'b')); SET optimize_functions_to_subcolumns = 1; SET enable_analyzer = 1; SELECT t1.1 FROM t_tuple_element; EXPLAIN QUERY TREE dump_tree = 0, dump_ast = 1 SELECT t1.1 FROM t_tuple_element; SELECT tupleElement(t1, 2) FROM t_tuple_element; EXPLAIN QUERY TREE dump_tree = 0, dump_ast = 1 SELECT tupleElement(t1, 2) FROM t_tuple_element; SELECT tupleElement(t1, 'a') FROM t_tuple_element; EXPLAIN QUERY TREE dump_tree = 0, dump_ast = 1 SELECT tupleElement(t1, 'a') FROM t_tuple_element; SELECT tupleElement(number, 1) FROM numbers(1); -- { serverError ILLEGAL_TYPE_OF_ARGUMENT } SELECT tupleElement(t1) FROM t_tuple_element; -- { serverError NUMBER_OF_ARGUMENTS_DOESNT_MATCH } SELECT tupleElement(t1, 'b') FROM t_tuple_element; -- { serverError NOT_FOUND_COLUMN_IN_BLOCK, UNKNOWN_IDENTIFIER } SELECT tupleElement(t1, 0) FROM t_tuple_element; -- { serverError ARGUMENT_OUT_OF_BOUND, NOT_FOUND_COLUMN_IN_BLOCK } SELECT tupleElement(t1, 3) FROM t_tuple_element; -- { serverError ARGUMENT_OUT_OF_BOUND, NOT_FOUND_COLUMN_IN_BLOCK } SELECT tupleElement(t1, materialize('a')) FROM t_tuple_element; -- { serverError ILLEGAL_TYPE_OF_ARGUMENT } SELECT t2.1 FROM t_tuple_element; EXPLAIN QUERY TREE dump_tree = 0, dump_ast = 1 SELECT t2.1 FROM t_tuple_element; SELECT tupleElement(t2, 1) FROM t_tuple_element; EXPLAIN QUERY TREE dump_tree = 0, dump_ast = 1 SELECT tupleElement(t2, 1) FROM t_tuple_element; SELECT tupleElement(t2) FROM t_tuple_element; -- { serverError NUMBER_OF_ARGUMENTS_DOESNT_MATCH } SELECT tupleElement(t2, 'a') FROM t_tuple_element; -- { serverError NOT_FOUND_COLUMN_IN_BLOCK, UNKNOWN_IDENTIFIER } SELECT tupleElement(t2, 0) FROM t_tuple_element; -- { serverError ARGUMENT_OUT_OF_BOUND, NOT_FOUND_COLUMN_IN_BLOCK } SELECT tupleElement(t2, 3) FROM t_tuple_element; -- { serverError ARGUMENT_OUT_OF_BOUND, NOT_FOUND_COLUMN_IN_BLOCK } SELECT tupleElement(t2, materialize(1)) FROM t_tuple_element; -- { serverError ILLEGAL_TYPE_OF_ARGUMENT } DROP TABLE t_tuple_element; WITH (1, 2) AS t SELECT t.1, t.2; EXPLAIN QUERY TREE dump_tree = 0, dump_ast = 1 WITH (1, 2) AS t SELECT t.1, t.2; WITH (1, 2)::Tuple(a UInt32, b UInt32) AS t SELECT t.1, tupleElement(t, 'b'); EXPLAIN QUERY TREE dump_tree = 0, dump_ast = 1 WITH (1, 2)::Tuple(a UInt32, b UInt32) AS t SELECT t.1, tupleElement(t, 'b');