https://victorsh.dev/blog Dev blog en-us iam@victorsh.dev (Victor Shirokiy) iam@victorsh.dev (Victor Shirokiy) Mon, 22 Jun 2026 00:00:00 GMT https://victorsh.dev/blog/migrate-clickhouse-materialized-view-to-explicit-target https://victorsh.dev/blog/migrate-clickhouse-materialized-view-to-explicit-target You cannot ALTER the column structure of an implicit Materialized View directly. Here is how to convert it to an explicit TO target table first, run your ALTER, and rebuild the view without POPULATE or data loss. Mon, 22 Jun 2026 00:00:00 GMT iam@victorsh.dev (Victor Shirokiy) clickhousematerialized viewdatabasedata engineering