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https://issues.apache.org/jira/browse/FLINK-6749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16041736#comment-16041736
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ASF GitHub Bot commented on FLINK-6749:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4046#discussion_r120752386
--- 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
standard ANSI SQL, but it provides no supports for DML and DDL. The following
BNF-grammar describes the supported SQL features:
--- End diff --
We should mention that not all features are supported by batch and
streaming. The `Operations` section will show which features are supported by
batch and streaming.
> Table API / SQL Docs: SQL Page
> ------------------------------
>
> Key: FLINK-6749
> URL: https://issues.apache.org/jira/browse/FLINK-6749
> Project: Flink
> Issue Type: Sub-task
> Components: Documentation, Table API & SQL
> Affects Versions: 1.3.0
> Reporter: Fabian Hueske
> Assignee: Haohui Mai
>
> Update and refine {{./docs/dev/table/sql.md}} in feature branch
> https://github.com/apache/flink/tree/tableDocs
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