CREATE TABLE `02763_alias` (`x` UInt8, `y` UInt64, `z` UInt64 ALIAS x + y) ENGINE = MergeTree ORDER BY x;
CREATE TABLE `02763_alias__fuzz_25` (`x` DateTime64(3), `y` IPv4, `z` Float32 ALIAS x + y) ENGINE = MergeTree ORDER BY x;

insert into 02763_alias select * from generateRandom() limit 1;
insert into 02763_alias__fuzz_25 select * from generateRandom() limit 1;

CREATE TABLE `02763_a_merge` (`x` UInt8, `y` UInt64, `z` UInt64) ENGINE = Merge(currentDatabase(), '02763_alias');

select * from 02763_a_merge;
Code: 49. DB::Exception: Arguments of 'plus' have incorrect data types: 'x' of type 'DateTime64(3)', 'y' of type 'UInt32': Child table: default.`02763_alias__fuzz_25` (72136cfb-b899-4d10-b6d0-3fcb8479b5c0). (LOGICAL_ERROR)