You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@drill.apache.org by ts...@apache.org on 2015/05/04 21:26:56 UTC
[24/51] [partial] drill-site git commit: Initial commit
http://git-wip-us.apache.org/repos/asf/drill-site/blob/c4de0f83/docs/create-view-command/index.html
----------------------------------------------------------------------
diff --git a/docs/create-view-command/index.html b/docs/create-view-command/index.html
new file mode 100644
index 0000000..c77d8c9
--- /dev/null
+++ b/docs/create-view-command/index.html
@@ -0,0 +1,1035 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+
+<meta charset="UTF-8">
+<meta name=viewport content="width=device-width, initial-scale=1">
+
+
+<title>CREATE VIEW command - Apache Drill</title>
+
+<link href="/css/syntax.css" rel="stylesheet" type="text/css">
+<link href="/css/style.css" rel="stylesheet" type="text/css">
+<link href="/css/arrows.css" rel="stylesheet" type="text/css">
+<link href="/css/breadcrumbs.css" rel="stylesheet" type="text/css">
+<link href="/css/code.css" rel="stylesheet" type="text/css">
+<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
+<link href="/css/responsive.css" rel="stylesheet" type="text/css">
+
+<link rel="shortcut icon" href="/favicon.ico" type="image/x-icon">
+<link rel="icon" href="/favicon.ico" type="image/x-icon">
+
+<script language="javascript" type="text/javascript" src="/js/lib/jquery-1.11.1.min.js"></script>
+<script language="javascript" type="text/javascript" src="/js/lib/jquery.easing.1.3.js"></script>
+<script language="javascript" type="text/javascript" src="/js/modernizr.custom.js"></script>
+<script language="javascript" type="text/javascript" src="/js/script.js"></script>
+<script language="javascript" type="text/javascript" src="/js/drill.js"></script>
+
+
+</head>
+
+<body onResize="resized();">
+ <div class="page-wrap">
+ <div class="bui"></div>
+
+<div id="menu" class="mw">
+<ul>
+ <li class='toc-categories'>
+ <a class="expand-toc-icon" href="javascript:void(0);"><i class="fa fa-bars"></i></a>
+ </li>
+ <li class="logo"><a href="/"></a></li>
+ <li class='expand-menu'>
+ <a href="javascript:void(0);"><span class='menu-text'>Menu</span><span class='expand-icon'><i class="fa fa-bars"></i></span></a>
+ </li>
+ <li class='clear-float'></li>
+ <li class="documentation-menu">
+ <a href="/docs/">Documentation</a>
+ <ul>
+
+ <li><a href="/docs/getting-started/">Getting Started</a></li>
+
+ <li><a href="/docs/architecture/">Architecture</a></li>
+
+ <li><a href="/docs/tutorials/">Tutorials</a></li>
+
+ <li><a href="/docs/install-drill/">Install Drill</a></li>
+
+ <li><a href="/docs/connect-a-data-source/">Connect a Data Source</a></li>
+
+ <li><a href="/docs/odbc-jdbc-interfaces/">ODBC/JDBC Interfaces</a></li>
+
+ <li><a href="/docs/query-data/">Query Data</a></li>
+
+ <li><a href="/docs/sql-reference/">SQL Reference</a></li>
+
+ <li><a href="/docs/data-sources-and-file-formats/">Data Sources and File Formats</a></li>
+
+ <li><a href="/docs/develop-custom-functions/">Develop Custom Functions</a></li>
+
+ <li><a href="/docs/manage-drill/">Manage Drill</a></li>
+
+ <li><a href="/docs/developer-information/">Developer Information</a></li>
+
+ <li><a href="/docs/release-notes/">Release Notes</a></li>
+
+ <li><a href="/docs/sample-datasets/">Sample Datasets</a></li>
+
+ <li><a href="/docs/archived-pages/">Archived Pages</a></li>
+
+ <li><a href="/docs/progress-reports/">Progress Reports</a></li>
+
+ <li><a href="/docs/project-bylaws/">Project Bylaws</a></li>
+
+ </ul>
+ </li>
+ <li class='nav'>
+ <a href="/community-resources/">Community</a>
+ <ul>
+ <li><a href="/team/">Team</a></li>
+ <li><a href="/mailinglists/">Mailing Lists</a></li>
+ <li><a href="/community-resources/">Community Resources</a></li>
+ </ul>
+ </li>
+ <li class='nav'><a href="/faq/">FAQ</a></li>
+ <li class='nav'><a href="/blog/">Blog</a></li>
+ <li id="twitter-menu-item"><a href="https://twitter.com/apachedrill" title="apachedrill on twitter" target="_blank"><img src="/images/twitter_32_26_white.png" alt="twitter logo" align="center"></a> </li>
+ <li class='search-bar'>
+ <form id="drill-search-form">
+ <input type="text" placeholder="Search Apache Drill" id="drill-search-term" />
+ <button type="submit">
+ <i class="fa fa-search"></i>
+ </button>
+ </form>
+ </li>
+ <li class="d">
+ <a href="/download/">
+ <i class="fa fa-cloud-download"></i> Download
+ </a>
+ </li>
+</ul>
+</div>
+
+
+
+
+
+
+
+<aside class="sidebar">
+ <div class="docsidebar">
+ <div class="docsidebarwrapper">
+ <ul style="display: block;">
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Getting Started</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/drill-introduction/">Drill Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/why-drill/">Why Drill</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Architecture</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/architecture-introduction/">Architecture Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/core-modules/">Core Modules</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Architectural Highlights</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/flexibility/">Flexibility</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/performance/">Performance</a></li>
+
+ </ul>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Tutorials</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/tutorials-introduction/">Tutorials Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/drill-in-10-minutes/">Drill in 10 Minutes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-the-yelp-academic-dataset/">Analyzing the Yelp Academic Dataset</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Learn Drill with the MapR Sandbox</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/about-the-mapr-sandbox/">About the MapR Sandbox</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-apache-drill-sandbox/">Installing the Apache Drill Sandbox</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/getting-to-know-the-drill-sandbox/">Getting to Know the Drill Sandbox</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/lession-1-learn-about-the-data-set/">Lession 1: Learn about the Data Set</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/lession-2-run-queries-with-ansi-sql/">Lession 2: Run Queries with ANSI SQL</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/lession-3-run-queries-on-complex-data-types/">Lession 3: Run Queries on Complex Data Types</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/summary/">Summary</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-highly-dynamic-datasets/">Analyzing Highly Dynamic Datasets</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Install Drill</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/install-drill-introduction/">Install Drill Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/deploying-drill-in-a-cluster/">Deploying Drill in a Cluster</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Installing Drill in Embedded Mode</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/embedded-mode-prerequisites/">Embedded Mode Prerequisites</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-drill-on-linux/">Installing Drill on Linux</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-drill-on-mac-os-x/">Installing Drill on Mac OS X</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-drill-on-windows/">Installing Drill on Windows</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/installing-drill-in-distributed-mode/">Installing Drill in Distributed Mode</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Connect a Data Source</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/connect-a-data-source-introduction/">Connect a Data Source Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/storage-plugin-registration/">Storage Plugin Registration</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Storage Plugin Configuration</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/plugin-configuration-introduction/">Plugin Configuration Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/workspaces/">Workspaces</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/file-system-storage-plugin/">File System Storage Plugin</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/hbase-storage-plugin/">HBase Storage Plugin</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/hive-storage-plugin/">Hive Storage Plugin</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/drill-default-input-format/">Drill Default Input Format</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/mongodb-plugin-for-apache-drill/">MongoDB Plugin for Apache Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/mapr-db-format/">MapR-DB Format</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">ODBC/JDBC Interfaces</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/interfaces-introduction/">Interfaces Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-jdbc/">Using JDBC</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Using ODBC on Linux and Mac OS X</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/odbc-on-linux-and-mac-introduction/">ODBC on Linux and Mac Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-driver-on-linux/">Installing the Driver on Linux</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-driver-on-mac-os-x/">Installing the Driver on Mac OS X</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-connections-on-linux-and-mac-os-x/">Configuring Connections on Linux and Mac OS X</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/driver-configuration-options/">Driver Configuration Options</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/using-a-connection-string/">Using a Connection String</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/advanced-properties/">Advanced Properties</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/testing-the-odbc-connection/">Testing the ODBC Connection</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Using ODBC on Windows</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-driver-on-windows/">Installing the Driver on Windows</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-connections-on-windows/">Configuring Connections on Windows</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/connecting-to-odbc-data-sources/">Connecting to ODBC Data Sources</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/tableau-examples/">Tableau Examples</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/using-drill-explorer-on-windows/">Using Drill Explorer on Windows</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-microstrategy-analytics-with-drill/">Using MicroStrategy Analytics with Drill</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Query Data</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/query-data-introduction/">Query Data Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Querying a File System</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-a-file-system-introduction/">Querying a File System Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-json-files/">Querying JSON Files</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-parquet-files/">Querying Parquet Files</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-plain-text-files/">Querying Plain Text Files</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-directories/">Querying Directories</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-hbase/">Querying HBase</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Querying Complex Data</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-complex-data-introduction/">Querying Complex Data Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/sample-data-donuts/">Sample Data: Donuts</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-flat-data/">Selecting Flat Data</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/using-sql-functions-clauses-and-joins/">Using SQL Functions, Clauses, and Joins</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-nested-data-for-a-column/">Selecting Nested Data for a Column</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-multiple-columns-within-nested-data/">Selecting Multiple Columns Within Nested Data</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-hive/">Querying Hive</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-the-information-schema/">Querying the INFORMATION SCHEMA</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-system-tables/">Querying System Tables</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1 current_section "><a href="javascript: void(0);">SQL Reference</a></li>
+ <ul class="current_section">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/sql-reference-introduction/">SQL Reference Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Data Types</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/supported-data-types/">Supported Data Types</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/date-time-and-timestamp/">Date, Time, and Timestamp</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/handling-different-data-types/">Handling Different Data Types</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/lexical-structure/">Lexical Structure</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/operators/">Operators</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">SQL Functions</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/about-sql-function-examples/">About SQL Function Examples</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/math-and-trig/">Math and Trig</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/data-type-conversion/">Data Type Conversion</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/date-time-functions-and-arithmetic/">Date/Time Functions and Arithmetic</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/string-manipulation/">String Manipulation</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/aggregate-and-aggregate-statistical/">Aggregate and Aggregate Statistical</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/functions-for-handling-nulls/">Functions for Handling Nulls</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Nested Data Functions</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/nested-data-limitations/">Nested Data Limitations</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/flatten/">FLATTEN</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/kvgen/">KVGEN</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/repeated-count/">REPEATED_COUNT</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/repeated-contains/">REPEATED_CONTAINS</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/query-directory-functions/">Query Directory Functions</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">SQL Commands</a></li>
+ <ul style="">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/supported-sql-commands/">Supported SQL Commands</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/alter-session-command/">ALTER SESSION Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/alter-system-command/">ALTER SYSTEM Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas-command/">CREATE TABLE AS (CTAS) command</a></li>
+
+ <li class="toctree-l3 current"><a class="reference internal" href="/docs/create-view-command/">CREATE VIEW command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/describe-command/">DESCRIBE Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/explain-commands/">EXPLAIN commands</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-statements/">SELECT Statements</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-databases-and-show-schemas-command/">SHOW DATABASES AND SHOW SCHEMAS Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-files-command/">SHOW FILES Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-tables-command/">SHOW TABLES Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/use-command/">USE Command</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">SQL Conditional Expressions</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/case/">CASE</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/reserved-keywords/">Reserved Keywords</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/sql-extensions/">SQL Extensions</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Data Sources and File Formats</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/data-sources-and-file-formats-introduction/">Data Sources and File Formats Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/hive-to-drill-data-type-mapping/">Hive-to-Drill Data Type Mapping</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/deploying-and-using-a-hive-udf/">Deploying and Using a Hive UDF</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-format/">Parquet Format</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/json-data-model/">JSON Data Model</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Develop Custom Functions</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/develop-custom-functions-introduction/">Develop Custom Functions Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/develop-a-simple-function/">Develop a Simple Function</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/developing-an-aggregate-function/">Developing an Aggregate Function</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/adding-custom-functions-to-drill/">Adding Custom Functions to Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-custom-functions-in-queries/">Using Custom Functions in Queries</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/custom-function-interfaces/">Custom Function Interfaces</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Manage Drill</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/manage-drill-introduction/">Manage Drill Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-drill-in-a-dedicated-cluster/">Configuring Drill in a Dedicated Cluster</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Configuring a Multitenant Cluster</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-a-multitenant-cluster-introduction/">Configuring a Multitenant Cluster Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-multitenant-resources/">Configuring Multitenant Resources</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-resources-for-a-shared-drillbit/">Configuring Resources for a Shared Drillbit</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Configuration Options</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuration-options-introduction/">Configuration Options Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/start-up-options/">Start-Up Options</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/planning-and-execution-options/">Planning and Execution Options</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/persistent-configuration-storage/">Persistent Configuration Storage</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/starting-stopping-drill/">Starting/Stopping Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/ports-used-by-drill/">Ports Used by Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/partition-pruning/">Partition Pruning</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/monitoring-and-canceling-queries-in-the-drill-web-ui/">Monitoring and Canceling Queries in the Drill Web UI</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Developer Information</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Develop Drill</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/compiling-drill-from-source/">Compiling Drill from Source</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/drill-patch-review-tool/">Drill Patch Review Tool</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Contribute to Drill</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/apache-drill-contribution-guidelines/">Apache Drill Contribution Guidelines</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/apache-drill-contribution-ideas/">Apache Drill Contribution Ideas</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Design Docs</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/drill-plan-syntax/">Drill Plan Syntax</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/rpc-overview/">RPC Overview</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/query-stages/">Query Stages</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/useful-research/">Useful Research</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/value-vectors/">Value Vectors</a></li>
+
+ </ul>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Release Notes</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-5-0-release-notes/">Apache Drill 0.5.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-4-0-release-notes/">Apache Drill 0.4.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-m1-release-notes-apache-drill-alpha/">Apache Drill M1 Release Notes (Apache Drill Alpha)</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-m1-release-notes-apache-drill-alpha/">Apache Drill M1 Release Notes (Apache Drill Alpha)</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-6-0-release-notes/">Apache Drill 0.6.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-7-0-release-notes/">Apache Drill 0.7.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-8-0-release-notes/">Apache Drill 0.8.0 Release Notes</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Sample Datasets</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/aol-search/">AOL Search</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/enron-emails/">Enron Emails</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/wikipedia-edit-history/">Wikipedia Edit History</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Archived Pages</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/how-to-run-the-drill-demo/">How to Run the Drill Demo</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/what-is-apache-drill/">What is Apache Drill</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Progress Reports</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/2014-q1-drill-report/">2014 Q1 Drill Report</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a class="reference internal" href="/docs/project-bylaws/">Project Bylaws</a></li>
+
+
+ </ul>
+
+ </div>
+ </div>
+</aside>
+
+
+ <nav class="breadcrumbs">
+ <li><a href="/docs/">Docs</a></li>
+
+
+ <li><a href="/docs/sql-reference/">SQL Reference</a></li>
+
+ <li><a href="/docs/sql-commands/">SQL Commands</a></li>
+
+ <li>CREATE VIEW command</li>
+</nav>
+
+ <div class="main-content-wrapper">
+ <div class="main-content">
+
+
+ <a class="edit-link" href="https://github.com/apache/drill/blob/gh-pages/_docs/sql-reference/sql-commands/050-create-view-command.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a>
+
+
+ <div class="int_title">
+ <h1>CREATE VIEW command</h1>
+
+ </div>
+
+ <link href="/css/docpage.css" rel="stylesheet" type="text/css">
+
+ <div class="int_text" align="left">
+
+ <p>The CREATE VIEW command creates a virtual structure for the result set of a
+stored query. A view can combine data from multiple underlying data sources
+and provide the illusion that all of the data is from one source. You can use
+views to protect sensitive data, for data aggregation, and to hide data
+complexity from users. You can create Drill views from files in your local and
+distributed file systems, Hive, HBase, and MapR-DB tables, as well as from
+existing views or any other available storage plugin data sources.</p>
+
+<h2 id="syntax">Syntax</h2>
+
+<p>The CREATE VIEW command supports the following syntax:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">CREATE [OR REPLACE] VIEW [workspace.]view_name [ (column_name [, ...]) ] AS <query>;
+</code></pre></div>
+<p>Use CREATE VIEW to create a new view. Use CREATE OR REPLACE VIEW to replace an
+existing view with the same name. When you replace a view, the query must
+generate the same set of columns with the same column names and data types.</p>
+
+<p><strong>Note:</strong> Follow Drill’s rules for identifiers when you name the view. See coming soon...</p>
+
+<h2 id="parameters">Parameters</h2>
+
+<p><em>workspace</em><br>
+The location where you want the view to exist. By default, the view is created
+in the current workspace. See
+<a href="/docs/Workspaces">Workspaces</a>.</p>
+
+<p><em>view_name</em><br>
+The name that you give the view. The view must have a unique name. It cannot
+have the same name as any other view or table in the workspace.</p>
+
+<p><em>column_name</em><br>
+Optional list of column names in the view. If you do not supply column names,
+they are derived from the query.</p>
+
+<p><em>query</em><br>
+A SELECT statement that defines the columns and rows in the view.</p>
+
+<h2 id="usage-notes">Usage Notes</h2>
+
+<h3 id="storage">Storage</h3>
+
+<p>Drill stores views in the location specified by the workspace that you use
+when you run the CREATE VIEW command. If the workspace is not defined, Drill
+creates the view in the current workspace. You must use a writable workspace
+when you create a view. Currently, Drill only supports views created in the
+file system or distributed file system.</p>
+
+<p>The following example shows a writable workspace as defined within the storage
+plugin in the <code>/tmp</code> directory of the file system:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">"tmp": {
+ "location": "/tmp",
+ "writable": true,
+ }
+</code></pre></div>
+<p>Drill stores the view definition in JSON format with the name that you specify
+when you run the CREATE VIEW command, suffixed <code>by .view.drill</code>. For example,
+if you create a view named <code>myview</code>, Drill stores the view in the designated
+workspace as <code>myview.view.drill</code>.</p>
+
+<p>Data Sources</p>
+
+<p>Drill considers data sources to have either a strong schema or a weak schema. </p>
+
+<h5 id="strong-schema">Strong Schema</h5>
+
+<p>With the exception of text file data sources, Drill verifies that data sources
+associated with a strong schema contain data types compatible with those used
+in the query. Drill also verifies that the columns referenced in the query
+exist in the underlying data sources. If the columns do not exist, CREATE VIEW
+fails.</p>
+
+<h4 id="weak-schema">Weak Schema</h4>
+
+<p>Drill does not verify that data sources associated with a weak schema contain
+data types compatible with those used in the query. Drill does not verify if
+columns referenced in a query on a Parquet data source exist, therefore CREATE
+VIEW always succeeds. In the case of JSON files, Drill does not verify if the
+files contain the maps specified in the view.</p>
+
+<p>The following table lists the current categories of schema and the data
+sources associated with each:</p>
+
+<table>
+ <tr>
+ <th></th>
+ <th>Strong Schema</th>
+ <th>Weak Schema</th>
+ </tr>
+ <tr>
+ <td valign="top">Data Sources</td>
+ <td>views<br>hive tables<br>hbase column families<br>text</td>
+ <td>json<br>mongodb<br>hbase column qualifiers<br>parquet</td>
+ </tr>
+</table>
+
+
+<h2 id="related-commands">Related Commands</h2>
+
+<p>After you create a view using the CREATE VIEW command, you can issue the
+following commands against the view:</p>
+
+<ul>
+<li>SELECT </li>
+<li>DESCRIBE </li>
+<li>DROP </li>
+</ul>
+
+<div class="admonition note">
+ <p class="first admonition-title">Note</p>
+ <p class="last">You cannot update, insert into, or delete from a view. </p>
+</div>
+
+<h2 id="example">Example</h2>
+
+<p>This example shows you some steps that you can follow when you want to create
+a view in Drill using the CREATE VIEW command. A workspace named “donuts” was
+created for the steps in this example.</p>
+
+<p>Complete the following steps to create a view in Drill:</p>
+
+<ol>
+<li><p>Decide which workspace you will use to create the view, and verify that the writable option is set to “true.” You can use an existing workspace, or you can create a new workspace. See <a href="https://cwiki.apache.org/confluence/display/DRILL/Workspaces">Workspaces</a> for more information. </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">"workspaces": {
+ "donuts": {
+ "location": "/home/donuts",
+ "writable": true,
+ "defaultInputFormat": null
+ }
+ },
+</code></pre></div></li>
+<li><p>Run SHOW DATABASES to verify that Drill recognizes the workspace. </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">0: jdbc:drill:zk=local> show databases;
++-------------+
+| SCHEMA_NAME |
++-------------+
+| dfs.default |
+| dfs.root |
+| dfs.donuts |
+| dfs.tmp |
+| cp.default |
+| sys |
+| INFORMATION_SCHEMA |
++-------------+
+</code></pre></div></li>
+<li><p>Use the writable workspace. </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">0: jdbc:drill:zk=local> use dfs.donuts;
++------------+------------+
+| ok | summary |
++------------+------------+
+| true | Default schema changed to 'dfs.donuts' |
++------------+------------+
+</code></pre></div></li>
+<li><p>Test run the query that you plan to use with the CREATE VIEW command. </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">0: jdbc:drill:zk=local> select id, type, name, ppu from `donuts.json`;
++------------+------------+------------+------------+
+| id | type | name | ppu |
++------------+------------+------------+------------+
+| 0001 | donut | Cake | 0.55 |
++------------+------------+------------+------------+
+</code></pre></div></li>
+<li><p>Run the CREATE VIEW command with the query. </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">0: jdbc:drill:zk=local> create view mydonuts as select id, type, name, ppu from `donuts.json`;
++------------+------------+
+| ok | summary |
++------------+------------+
+| true | View 'mydonuts' created successfully in 'dfs.donuts' schema |
++------------+------------+
+</code></pre></div></li>
+<li><p>Create a new view in another workspace from the current workspace. </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">0: jdbc:drill:zk=local> create view dfs.tmp.yourdonuts as select id, type, name from `donuts.json`;
++------------+------------+
+| ok | summary |
++------------+------------+
+| true | View 'yourdonuts' created successfully in 'dfs.tmp' schema |
++------------+------------+
+</code></pre></div></li>
+<li><p>Query the view created in both workspaces.</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">0: jdbc:drill:zk=local> select * from mydonuts;
++------------+------------+------------+------------+
+| id | type | name | ppu |
++------------+------------+------------+------------+
+| 0001 | donut | Cake | 0.55 |
++------------+------------+------------+------------+
+
+0: jdbc:drill:zk=local> select * from dfs.tmp.yourdonuts;
++------------+------------+------------+
+| id | type | name |
++------------+------------+------------+
+| 0001 | donut | Cake |
++------------+------------+------------+
+</code></pre></div></li>
+</ol>
+
+
+
+ <div class="doc-nav">
+
+ <span class="previous-toc"><a href="/docs/create-table-as-ctas-command/">← CREATE TABLE AS (CTAS) command</a></span><span class="next-toc"><a href="/docs/describe-command/">DESCRIBE Command →</a></span>
+</div>
+
+
+ </div>
+ </div>
+ </div>
+
+ </div>
+ <p class="push"></p>
+<div id="footer" class="mw">
+<div class="wrapper">
+Copyright © 2012-2014 The Apache Software Foundation, licensed under the Apache License, Version 2.0.<br>
+Apache and the Apache feather logo are trademarks of The Apache Software Foundation. Other names appearing on the site may be trademarks of their respective owners.<br/><br/>
+</div>
+</div>
+
+ <script>
+(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+
+ga('create', 'UA-53379651-1', 'auto');
+ga('send', 'pageview');
+</script>
+
+</body>
+</html>