Github user alpinegizmo commented on a diff in the pull request:
https://github.com/apache/flink/pull/4046#discussion_r119894751
--- Diff: docs/dev/table/sql.md ---
@@ -82,14 +84,12 @@ val result2 = tableEnv.sql(
</div>
</div>
-**TODO: Add some intro.**
-
{% top %}
Supported Syntax
----------------
-Flink uses [Apache
Calcite](https://calcite.apache.org/docs/reference.html) for SQL parsing.
Currently, Flink SQL only supports query-related SQL syntax and only a subset
of the comprehensive SQL standard. The following BNF-grammar describes the
supported SQL features:
+Flink parses SQL using [Apache
Calcite](https://calcite.apache.org/docs/reference.html). Flink supports the
standard ANSI SQL but it provides no supports for DML and DDL. The following
BNF-grammar describes the supported SQL features:
--- End diff --
Flink supports standard ANSI SQL, but it provides no support for DML or DDL.
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