data replication.
supports_duduplication
(UInt8) — Flag that indicates if table engine supports data deduplication.supports_parallel_insert
(UInt8) — Flag that indicates if table engine supports parallel insert (see max_insert_threads
setting).Example:
SELECT *
FROM system.table_engines
WHERE name in ('Kafka', 'MergeTree', 'ReplicatedCollapsingMergeTree')
┌─name──────────────────────────┬─supports_settings─┬─supports_skipping_indices─┬─supports_sort_order─┬─supports_ttl─┬─supports_replication─┬─supports_deduplication─┬─supports_parallel_insert─┐
│ MergeTree │ 1 │ 1 │ 1 │ 1 │ 0 │ 0 │ 1 │
│ Kafka │ 1 │ 0 │ 0 │ 0 │ 0 │ 0 │ 0 │
│ ReplicatedCollapsingMergeTree │ 1 │ 1 │ 1 │ 1 │ 1 │ 1 │ 1 │
└───────────────────────────────┴───────────────────┴───────────────────────────┴─────────────────────┴──────────────┴──────────────────────┴────────────────────────┴──────────────────────────┘
See also
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