twalthr commented on a change in pull request #9545: [FLINK-13355][docs] Add
documentation for Temporal Table Join in blink planner
URL: https://github.com/apache/flink/pull/9545#discussion_r319472761
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File path: docs/dev/table/sourceSinks.md
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@@ -324,6 +324,46 @@ FilterableTableSource[T] {
{% top %}
+### Defining a TableSource with Lookupable
+
+The `LookupableTableSource` interface adds support for the table to be
accessed via key column(s) in a lookup fashion. This is very useful when used
to join with a dimension table to enrich some information. If you want to use
the `TableSource` in lookup mode, you should use the source in [temporal table
join syntax](streaming/joins.html).
Review comment:
add an `attention` label that this feature is experimental.
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