[Yandex DataLens] Joining concatenation of multiple tables is not supported
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ERR.DS_API.DB.CHYT.INVALID_SORTED_JOIN.CONCAT_NOT_SUPPORTED
This error occurs when attempting to perform a sorted JOIN with a source representing the concatenation of multiple tables, e.g., list or range of tables.
Use a single table in the join, pre-aggregate the data into a junction table, or move the concatenation to an SQL subquery, and select a supported JOIN strategy.