CREATE TABLE jit_test ( a UInt64, b UInt64, c UInt64, d UInt64, e UInt64, f UInt64, g UInt64, h UInt64, i UInt64, j UInt64 ) Engine = Memory INSERT INTO jit_test SELECT number, number, number, number, number, number, number, number, number, number FROM system.numbers LIMIT 10000000 SELECT COUNT() FROM jit_test WHERE NOT ignore(a / b + c / d + e / f + g / h + i / j) SETTINGS compile_expressions = 0; SELECT COUNT() FROM jit_test WHERE NOT ignore(a / b + c / d + e / f + g / h + i / j) SETTINGS compile_expressions = 1, min_count_to_compile_expression = 1 DROP TABLE IF EXISTS jit_test