DML documentation

docs/source/user-guide/sql/dml.md

@@ -0,0 +1,60 @@
+<!---
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+
+# DML
+
+## COPY
+
+Copy a table to file(s). Supported file formats are `parquet`, `csv`, and `json`.
+
+<pre>
+COPY <i><b>table_name</i></b> TO '<i><b>file_name</i></b>' [ ( <i><b>option</i></b> [, ... ] ) ]
+
+where <i><b>option</i></b> can be one of:
+    FORMAT <i><b>format_name</i></b>
+    PER_THREAD_OUTPUT <i><b>boolean</i></b>
+    ROW_GROUP_SIZE <i><b>integer</i></b>
+    ROW_GROUP_LIMIT_BYTES <i><b>integer</i></b>
+</pre>
+
+```sql
+> COPY source_table TO 'table' (FORMAT parquet, PER_THREAD_OUTPUT true);
++-------+
+| count |
++-------+
+| 2     |
++-------+
+```
+
+## INSERT
+
+Insert values into a table.
+
+<pre>
+INSERT INTO <i><b>table_name</i></b> { VALUES ( <i><b>expression</i></b> [, ...] ) [, ...] | <i><b>query</i></b> }
+</pre>
+
+```sql
+> INSERT INTO source_table VALUES (1, 'Foo'), (2, 'Bar');
++-------+
+| count |
++-------+
+| 2     |
++-------+
+```

docs/source/user-guide/sql/index.rst

@@ -25,6 +25,7 @@ SQL Reference
    select
    subqueries
    ddl
+   dml
    explain
    information_schema
    operators