Re: [PR] feat: support DataFusion paimon_incremental_query [paimon-rust]

["JingsongLi (via GitHub)" <gi...@apache.org>]

JingsongLi commented on code in PR #511:
URL: https://github.com/apache/paimon-rust/pull/511#discussion_r3701193197


##########
docs/src/sql.md:
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@@ -1169,6 +1169,72 @@ CROSS JOIN LATERAL vector_search(
 ) AS r;
 ```
 
+## Incremental Query
+
+Paimon supports batch incremental reads between snapshot IDs via the
+`paimon_incremental_query` table-valued function. This aligns with Spark's
+`paimon_incremental_query` TVF: results are returned as `RecordBatch` streams
+within a single SQL query (not a long-running CDC stream).
+
+### Registration
+
+When you use a `SQLContext`, `paimon_incremental_query` is registered
+automatically for every catalog you register — no extra setup is needed.
+
+With a raw DataFusion `SessionContext`, register it explicitly:
+
+```rust
+use paimon_datafusion::register_incremental_query;
+
+register_incremental_query(&ctx, catalog.clone(), "default");

Review Comment:
   register by default? so user don't need to register this again.



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