DROP TABLE IF EXISTS test; DROP TABLE IF EXISTS test_view; set allow_deprecated_syntax_for_merge_tree=1; CREATE TABLE test(date Date, id Int8, name String, value Int64) ENGINE = MergeTree(date, (id, date), 8192); CREATE VIEW test_view AS SELECT * FROM test; SET enable_optimize_predicate_expression = 1; -- Optimize predicate expression with view EXPLAIN SYNTAX SELECT * FROM test_view WHERE id = 1; EXPLAIN SYNTAX SELECT * FROM test_view WHERE id = 2; EXPLAIN SYNTAX SELECT id FROM test_view WHERE id = 1; EXPLAIN SYNTAX SELECT s.id FROM test_view AS s WHERE s.id = 1; SELECT * FROM (SELECT toUInt64(b), sum(id) AS b FROM test) WHERE `toUInt64(sum(id))` = 3; -- { serverError 47 } DROP TABLE IF EXISTS test; DROP TABLE IF EXISTS test_view;