Feature / Cursor: Add minimal version of page

docs/feature/cursor/index.md

@@ -0,0 +1,28 @@
+(server-side-cursor)=
+(server-side-cursors)=
+
+# Server-Side Cursors
+
+CrateDB implements the SQL Standard feature [F431 (read-only scrollable cursor)],
+aka. server-side cursors, aka. portals.
+
+A cursor is used to retrieve a small number of rows at a time from a query
+with a large result set. Such a result set might not be suitable for other
+ways of consumption, because its size might be larger than the system memory
+of the machines that process it, both server- and client-side.
+
+With F431, you {ref}`crate-reference:sql-declare` a server-side cursor,
+and iterate it, fetching the rows progressively using
+{ref}`crate-reference:sql-fetch`. 
+
+
+
+:::{note}
+{material-outlined}`construction;2em` This page is currently under construction.
+It includes not even the most basic essentials, and needs expansion. For example,
+the "Usage" and "Learn" sections are missing completely, and it's also not in the
+same shape like the other pages in this section.
+:::
+
+
+[F431 (read-only scrollable cursor)]: https://renenyffenegger.ch/notes/misc/ISO/9075/features/F431

docs/feature/index.md

@@ -52,6 +52,7 @@ architecture, inherited from Elasticsearch.
 :maxdepth: 1
 query/index
 generated/index
+cursor/index
 fdw/index
 udf/index
 ccr/index