SQL Clients Lack Native Cross-Database Join Queries Across Connections
Users of multi-database SQL client tools need to join tables across different configured database connections (e.g. a MySQL orders table with a ClickHouse logs table) within a single query, but currently must export data separately and merge it manually. This is inefficient for common cross-database reconciliation and ad hoc analysis, especially across heterogeneous engines with differing type systems.
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