spark-instrumented-optimizer/docs/sql-ref-syntax-qry-select-inline-table.md

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[SPARK-31419][SQL][DOCS] Document Table-valued Function and Inline Table ### What changes were proposed in this pull request? Document Table-valued Function and Inline Table ### Why are the changes needed? To make SQL Reference complete ### Does this PR introduce any user-facing change? Yes <img width="1050" alt="Screen Shot 2020-04-11 at 5 34 25 PM" src="https://user-images.githubusercontent.com/13592258/79057852-cedff880-7c1a-11ea-9e1e-7882594ab573.png"> <img width="1050" alt="Screen Shot 2020-04-11 at 5 34 46 PM" src="https://user-images.githubusercontent.com/13592258/79057854-d4d5d980-7c1a-11ea-94cc-92ef1121fa43.png"> <img width="1050" alt="Screen Shot 2020-04-10 at 7 36 00 PM" src="https://user-images.githubusercontent.com/13592258/79033391-c2986480-7b62-11ea-9d0a-6c60de823256.png"> <img width="1051" alt="Screen Shot 2020-04-10 at 7 36 21 PM" src="https://user-images.githubusercontent.com/13592258/79033392-c5935500-7b62-11ea-88d4-e7d7812a7add.png"> <img width="1051" alt="Screen Shot 2020-04-11 at 5 09 48 PM" src="https://user-images.githubusercontent.com/13592258/79057555-6ba09700-7c17-11ea-9683-16bbde63a529.png"> Also, linked the newly added pages to select statement <img width="1050" alt="Screen Shot 2020-04-10 at 3 27 59 PM" src="https://user-images.githubusercontent.com/13592258/79027245-5147ba00-7b40-11ea-9b10-527fd9639958.png"> ### How was this patch tested? Manually build and check Closes #28185 from huaxingao/tvf. Authored-by: Huaxin Gao <huaxing@us.ibm.com> Signed-off-by: Sean Owen <srowen@gmail.com>
2020-04-13 00:39:27 -04:00
---
layout: global
title: Inline Table
displayTitle: Inline Table
license: |
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.
---
### Description
An inline table is a temporary table created using a VALUES clause.
### Syntax
{% highlight sql %}
VALUES ( expression [ , ... ] ) [ table_alias ]
{% endhighlight %}
### Parameters
<dl>
<dt><code><em>expression</em></code></dt>
<dd>
Specifies a combination of one or more values, operators and SQL functions that results in a value.
</dd>
</dl>
<dl>
<dt><code><em>table_alias</em></code></dt>
<dd>
Specifies a temporary name with an optional column name list. <br><br>
<b>Syntax:</b>
<code>
[ AS ] table_name [ ( column_name [ , ... ] ) ]
</code>
</dd>
</dl>
### Examples
{% highlight sql %}
-- single row, without a table alias
SELECT * FROM VALUES ("one", 1);
+----+----+
|col1|col2|
+----+----+
| one| 1|
+----+----+
-- three rows with a table alias
SELECT * FROM VALUES ("one", 1), ("two", 2), ("three", null) AS data(a, b);
+-----+----+
| a| b|
+-----+----+
| one| 1|
| two| 2|
|three|null|
+-----+----+
-- complex types with a table alias
SELECT * FROM VALUES ("one", array(0, 1)), ("two", array(2, 3)) AS data(a, b);
+---+------+
| a| b|
+---+------+
|one|[0, 1]|
|two|[2, 3]|
+---+------+
{% endhighlight %}
### Related Statement
* [SELECT](sql-ref-syntax-qry-select.html)