SET compile_expressions = 1; SET min_count_to_compile_expression = 0; DROP TABLE IF EXISTS test_jit_nonnull; CREATE TABLE test_jit_nonnull (value UInt8) ENGINE = TinyLog; INSERT INTO test_jit_nonnull VALUES (0), (1); SELECT 'test_jit_nonnull'; SELECT value, multiIf(value = 1, 2, value, 1, 0), if (value, 1, 0) FROM test_jit_nonnull; DROP TABLE IF EXISTS test_jit_nullable; CREATE TABLE test_jit_nullable (value Nullable(UInt8)) ENGINE = TinyLog; INSERT INTO test_jit_nullable VALUES (0), (1), (NULL); SELECT 'test_jit_nullable'; SELECT value, multiIf(value = 1, 2, value, 1, 0), if (value, 1, 0) FROM test_jit_nullable;