Add doc update

confluentinc · Aug 9, 2018 · 0c28e70 · 0c28e70
1 parent ee5e43f
commit 0c28e70
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/docs/syntax-reference.rst b/docs/syntax-reference.rst
@@ -337,6 +337,9 @@ from the left stream that was used in the join criteria. This column will be
 registered as the key of the resulting stream if included in the selected
 columns.
 
+For stream-table joins, the column used in the join criteria for the table
+must be the table key.
+
 The WITH clause for the result supports the following properties:
 
 +---------------+------------------------------------------------------------------------------------------------------+
@@ -413,6 +416,9 @@ from the left table that was used in the join criteria. This column will be
 registered as the key of the resulting table if included in the selected
 columns.
 
+For joins, the columns used in the join criteria must be the keys of the
+tables being joined.
+
 The WITH clause supports the following properties:
 
 +---------------+------------------------------------------------------------------------------------------------------+