Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1981#discussion_r64568059
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/table.scala
---
@@ -251,12 +249,157 @@ class Table(
* }}}
*/
def join(right: Table): Table = {
+ join(right, None, JoinType.INNER)
+ }
+
+ /**
+ * Joins two [[Table]]s. Similar to an SQL join. The fields of the two
joined
+ * operations must not overlap, use [[as]] to rename fields if
necessary.
+ *
+ * Note: Both tables must be bound to the same [[TableEnvironment]].
+ *
+ * Example:
+ *
+ * {{{
+ * left.join(right, "a = b && c > 3")
--- End diff --
If we decide to only allow join predicates as join condition, we should
remove the `c > 3` predicate.
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