/ 
DBIO-ClickHouse-0.900004
/ DBIO::ClickHouse::Test::Schema::Unsorted

NAME

DBIO::ClickHouse::Test::Schema::Unsorted - Test result class -- the source with no primary key

VERSION

version 0.900004

DESCRIPTION

A source with no primary key, which DBIO::ClickHouse::DDL renders as ORDER BY tuple() -- ClickHouse's spelling for "no sorting key". Every other table in DBIO::ClickHouse::Test::Schema has one, so this is the only place the empty-key path is deployed.

What it proves on a live server is that system.tables.sorting_key comes back as the empty string rather than the literal tuple(), which is what DBIO::ClickHouse::Introspect::Tables assumes when it splits the key into entries. If the server ever reported tuple() instead, this table would round-trip to a one-entry sorting key and the diff would demand a rebuild that can never converge.

AUTHOR

DBIO Authors

COPYRIGHT AND LICENSE

Copyright (C) 2026 DBIO Authors

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.