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+                <li class="toctree-l3"><a class="reference internal" 
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+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/installing-drill-on-linux-and-mac-os-x/">Installing Drill on Linux 
and Mac OS X</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/starting-drill-on-linux-and-mac-os-x/">Starting Drill on Linux and 
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>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/starting-drill-on-windows/">Starting Drill on Windows</a></li>
+              
+            </ul>
+            
+          
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+              <li class="toctree-l2"><a href="javascript: void(0);">Installing 
Drill in Distributed Mode</a></li>
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Prerequisites</a></li>
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href="/docs/installing-drill-on-the-cluster/">Installing Drill on the 
Cluster</a></li>
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+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/starting-drill-in-distributed-mode/">Starting Drill in Distributed 
Mode</a></li>
+              
+            </ul>
+            
+          
+          </ul>
+        
+      
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+          <li class="toctree-l1"><a href="javascript: void(0);">Configure 
Drill</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/configure-drill-introduction/">Configure Drill Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/configuring-drill-memory/">Configuring Drill Memory</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 class="reference internal" 
href="/docs/configuring-user-impersonation/">Configuring User 
Impersonation</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/configuring-user-authentication/">Configuring User 
Authentication</a></li>
+            
+          
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+              <li class="toctree-l2"><a href="javascript: 
void(0);">Configuration Options</a></li>
+              <ul style="display: none">
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+                <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/ports-used-by-drill/">Ports Used by Drill</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/configuring-the-drill-shell/">Configuring the Drill Shell</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-basics/">Plugin Configuration Basics</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/workspaces/">Workspaces</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 current_section "><a href="javascript: 
void(0);">ODBC/JDBC Interfaces</a></li>
+          <ul class="current_section">
+          
+            
+              <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-with-squirrel-on-windows/">Using JDBC with SQuirreL on 
Windows</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Installing 
the ODBC Driver</a></li>
+              <ul style="display: none">
+              
+                <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/installing-the-driver-on-windows/">Installing the Driver on 
Windows</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: 
void(0);">Configuring ODBC</a></li>
+              <ul style="">
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/odbc-configuration-reference/">ODBC Configuration Reference</a></li>
+              
+                <li class="toctree-l3 current"><a class="reference internal" 
href="/docs/configuring-odbc-on-linux-mac-os-x/">Configuring ODBC on Linux/Mac 
OS X</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/configuring-odbc-on-windows/">Configuring ODBC on Windows</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 
Drill Explorer</a></li>
+              <ul style="display: none">
+              
+                <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/using-drill-explorer-on-windows/">Using Drill Explorer on 
Windows</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Using 
Drill with BI Tools</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/using-drill-with-bi-tools-introduction/">Using Drill with BI Tools 
Introduction</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-microstrategy-analytics-with-apache-drill/">Using 
MicroStrategy Analytics with Apache Drill</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/using-tibco-spotfire-with-drill/">Using Tibco Spotfire with 
Drill</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/using-apache-drill-with-tableau-9-desktop/">Using Apache Drill with 
Tableau 9 Desktop</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/using-apache-drill-with-tableau-9-server/">Using Apache Drill with 
Tableau 9 Server</a></li>
+              
+            </ul>
+            
+          
+          </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>
+            
+          
+            
+              <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);">Performance 
Tuning</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/performance-tuning-introduction/">Performance Tuning 
Introduction</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/choosing-a-storage-format/">Choosing a Storage Format</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Query 
Plans and Tuning</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/query-plans-and-tuning-introduction/">Query Plans and Tuning 
Introduction</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/join-planning-guidelines/">Join Planning Guidelines</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/guidelines-for-optimizing-aggregation/">Guidelines for Optimizing 
Aggregation</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/modifying-query-planning-options/">Modifying Query Planning 
Options</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/sort-based-and-hash-based-memory-constrained-operators/">Sort-Based 
and Hash-Based Memory-Constrained Operators</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/enabling-query-queuing/">Enabling Query Queuing</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/controlling-parallelization-to-balance-performance-with-multi-tenancy/">Controlling
 Parallelization to Balance Performance with Multi-Tenancy</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: 
void(0);">Identifying Performance Issues</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/query-plans/">Query Plans</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/query-profiles/">Query Profiles</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: 
void(0);">Performance Tuning Reference</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/query-profile-column-descriptions/">Query Profile Column 
Descriptions</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/physical-operators/">Physical Operators</a></li>
+              
+            </ul>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Log and 
Debug</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/log-and-debug-introduction/">Log and Debug Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/error-messages/">Error Messages</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/modify-logback-xml/">Modify logback.xml</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/review-the-java-stack-trace/">Review the Java Stack Trace</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/query-audit-logging/">Query Audit Logging</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">SQL 
Reference</a></li>
+          <ul style="display: none">
+          
+            
+              <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="display: none">
+              
+                <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/">ALTER SESSION</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/alter-system/">ALTER SYSTEM</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/create-table-as-ctas/">CREATE TABLE AS (CTAS)</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/create-view/">CREATE VIEW</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/drop-view/">DROP VIEW</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/describe/">DESCRIBE</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/explain/">EXPLAIN</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/select/">SELECT</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/select-list/">SELECT List</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/from-clause/">FROM Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/group-by-clause/">GROUP BY Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/having-clause/">HAVING Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/limit-clause/">LIMIT Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/offset-clause/">OFFSET Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/order-by-clause/">ORDER BY Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/union-set-operator/">UNION Set Operator</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/where-clause/">WHERE Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/with-clause/">WITH Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/show-databases-and-show-schemas/">SHOW DATABASES and SHOW 
SCHEMAS</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/show-files/">SHOW FILES</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/show-tables/">SHOW TABLES</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" 
href="/docs/use/">USE</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 class="reference internal" 
href="/docs/troubleshooting/">Troubleshooting</a></li>
+        
+      
+        
+          <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>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/apache-drill-0-9-0-release-notes/">Apache Drill 0.9.0 Release 
Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/apache-drill-1-0-0-release-notes/">Apache Drill 1.0.0 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>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" 
href="/docs/partition-pruning/">Partition Pruning</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/odbc-jdbc-interfaces/">ODBC/JDBC Interfaces</a></li>
+  
+    <li><a href="/docs/configuring-odbc/">Configuring ODBC</a></li>
+  
+  <li>Configuring ODBC on Linux/Mac OS X</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/odbc-jdbc-interfaces/configuring-odbc/020-configuring-odbc-on-linux-mac-os-x.md";
 target="_blank"><i class="fa fa-pencil-square-o"></i></a>
+    
+
+    <div class="int_title left">
+      <h1>Configuring ODBC on Linux/Mac OS X</h1>
+
+    </div>
+
+    <link href="/css/docpage.css" rel="stylesheet" type="text/css">
+
+    <div class="int_text" align="left">
+      
+        <p>ODBC driver managers use configuration files to define and 
configure ODBC data
+sources and drivers. To configure an ODBC connection for Linux or Mac OS X, 
complete the following
+steps:</p>
+
+<ul>
+<li>Step 1: Set Environment Variables (Linux only)</li>
+<li>Step 2: Define the ODBC Data Sources in odbc.ini</li>
+<li>Step 3: (Optional) Define the ODBC Driver in odbcinst.ini</li>
+<li>Step 4: Configure the MapR Drill ODBC Driver</li>
+</ul>
+
+<h2 id="sample-configuration-files">Sample Configuration Files</h2>
+
+<p>Before you connect to Drill through an ODBC client tool
+on Linux or Mac OS X, copy the following configuration files in 
<code>/opt/mapr/drillobdc/Setup</code> to your home directory unless the files 
already exist in your home directory:</p>
+
+<ul>
+<li><code>mapr.drillodbc.ini</code></li>
+<li><code>odbc.ini</code></li>
+<li><code>odbcinst.ini</code></li>
+</ul>
+
+<p>In your home directory, use sudo to rename the files as hidden files:</p>
+
+<ul>
+<li>.mapr.drillodbc.ini</li>
+<li>.odbc.ini</li>
+<li>.odbcinst.ini</li>
+</ul>
+
+<p>The installer for Mac OS X creates a sample user DSN in odbc.ini in either 
of the following locations:</p>
+
+<ul>
+<li>~/Library/ODBC/odbc.ini</li>
+<li>~/.odbc.ini</li>
+</ul>
+
+<p>Depending on the driver manager you use, the user DSN in one of these files 
will be effective.</p>
+
+<hr>
+
+<h2 id="step-1:-set-environment-variables">Step 1: Set Environment 
Variables</h2>
+
+<h3 id="linux">Linux</h3>
+
+<p>Set the following environment variables to point to the 
<code>.odbc.ini</code>
+and <code>.mapr.drillodbc.ini</code> configuration files, respectively:</p>
+
+<ul>
+<li><code>ODBCINI</code> (point to <code>.odbc.ini</code>)</li>
+<li><code>MAPRDRILLINI</code> (point to <code>.mapr.drillodbc.ini</code>)</li>
+</ul>
+
+<p>The <code>LD_LIBRARY_PATH</code> environment variable must include the 
paths to the
+following:</p>
+
+<ul>
+<li>Installed ODBC driver manager libraries</li>
+<li>Installed MapR ODBC Driver for Apache Drill shared libraries</li>
+</ul>
+
+<p>You can have both 32- and 64-bit versions of the driver installed at the 
same time on the same computer. 
+<div class="admonition important">
+  <p class="first admonition-title">Important</p>
+  <p class="last">Do not include the paths to both 32- and 64-bit shared 
libraries in LD_LIBRARY PATH at the same time.  </p>
+</div>
+Only include the path to the shared libraries corresponding to the driver 
matching the bitness of the client application used.</p>
+
+<p>For example, if you are using a 64-bit client application and ODBC driver
+manager libraries are installed in <code>/usr/local/lib</code>, then set
+<code>LD_LIBRARY_PATH</code> as follows:  </p>
+
+<p><code>export 
LD_LIBRARY_PATH=/usr/local/lib:/opt/simba/drillodbc/lib/64</code>  </p>
+
+<h3 id="mac-os-x">Mac OS X</h3>
+
+<p>Create or modify the <code>/etc/launchd.conf</code> file to set environment 
variables. Set the SIMBAINI variable to point to the 
<code>.mapr.drillodbc.ini</code> file, the ODBCSYSINI varialbe to the 
<code>.odbcinst.ini</code> file, the ODBCINI variable to the 
<code>.odbc.ini</code> file, and the DYLD_LIBRARY_PATH to the location of the 
dynamic linker (DYLD) libraries and to the MapR Drill ODBC Driver. If you 
installed the iODBC driver manager using the DMG, the DYLD libraries are 
installed in <code>/usr/local/iODBC/lib</code>. The launchd.conf file should 
look something like this:</p>
+<div class="highlight"><pre><code class="language-text" 
data-lang="text">setenv SIMBAINI /Users/joeuser/.mapr.drillodbc.ini
+setenv ODBCSYSINI /Users/joeuser/.odbcinst.ini
+setenv ODBCINI /Users/joeuser/.odbc.ini
+launchctl setenv DYLD_LIBRARY_PATH 
/usr/local/iODBC/lib:/opt/mapr/drillodbc/lib/universal
+</code></pre></div>
+<h2 id="restart-the-mac-os-x-or-run-launchctl-load-/etc/launchd.conf.">Restart 
the Mac OS X or run <code>launchctl load /etc/launchd.conf</code>.</h2>
+
+<h2 id="step-2:-define-the-odbc-data-sources-in-.odbc.ini">Step 2: Define the 
ODBC Data Sources in .odbc.ini</h2>
+
+<p>Define the ODBC data sources in the <code>~/.odbc.ini</code> configuration 
file for your environment. The following sample shows a possible configuration 
for using Drill in embedded mode. </p>
+
+<p><strong>Example</strong></p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">[ODBC]
+# Specify any global ODBC configuration here such as ODBC tracing.
+
+[ODBC Data Sources]
+Sample MapR Drill DSN=MapR Drill ODBC Driver
+
+[Sample MapR Drill DSN]
+# Description: DSN Description.
+# This key is not necessary and is only to give a description of the data 
source.
+Description=Sample MapR Drill ODBC Driver DSN
+# Driver: The location where the ODBC driver is installed to.
+Driver=/opt/mapr/drillodbc/lib/universal/libmaprdrillodbc.dylib
+
+# Values for ConnectionType, AdvancedProperties, Catalog, Schema should be set 
here.
+# If ConnectionType is Direct, include Host and Port. If ConnectionType is 
ZooKeeper, include ZKQuorum and ZKClusterID
+# They can also be specified in the connection string.
+ConnectionType=Direct
+HOST=localhost
+PORT=31010
+ZKQuorum=
+ZKClusterID=
+AdvancedProperties={HandshakeTimeout=5;QueryTimeout=180;TimestampTZDisplayTimeout=utc;ExcludedSchemas=sys,INFORMATION_SCHEMA}
+Catalog=DRILL
+Schema=
+</code></pre></div>
+<p>If ConnectionType=Zookeeper, get the ZKQuorum and ZKClusterID values from 
the <code>drill-override.conf</code> file, and define the ZKQuorum and 
ZKClusterID properties. For example:</p>
+
+<ul>
+<li><code>ZKQuorum=localhost:2181</code><br></li>
+<li><code>ZKClusterID=drillbits1</code></li>
+</ul>
+
+<p>If ConnectionType=Direct, define HOST and PORT properties. For example:</p>
+
+<ul>
+<li><code>HOST=localhost</code><br></li>
+<li><code>PORT=31010</code></li>
+</ul>
+
+<p><a href="/docs/odbc-configuration-reference/#configuration-options">Driver
+Configuration
+Options</a> describes configuration options available for controlling the
+behavior of DSNs using the MapR Drill ODBC Driver.</p>
+
+<hr>
+
+<h2 id="step-3:-(optional)-define-the-odbc-driver-in-.odbcinst.ini">Step 3: 
(Optional) Define the ODBC Driver in .odbcinst.ini</h2>
+
+<p>The <code>.odbcinst.ini</code> is an optional configuration file that 
defines the ODBC
+Drivers. This configuration file is optional because you can specify drivers
+directly in the<code>.odbc.ini</code> configuration file. The following sample 
shows a possible configuration.</p>
+
+<p><strong>Example</strong></p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">[ODBC 
Drivers]
+MapR Drill ODBC Driver=Installed
+
+[MapR Drill ODBC Driver]
+Description=MapR Drill ODBC Driver
+Driver=/opt/mapr/drillodbc/lib/universal/libmaprdrillodbc.dylib
+</code></pre></div>
+<hr>
+
+<h2 id="step-4:-configure-the-mapr-drill-odbc-driver">Step 4: Configure the 
MapR Drill ODBC Driver</h2>
+
+<p>Configure the MapR Drill ODBC Driver for your environment by modifying the 
<code>.mapr.drillodbc.ini</code> configuration
+file. This configures the driver to work with your ODBC driver manager. The 
following sample shows a possible configuration, which you can use as is if you 
installed the default iODBC driver manager.</p>
+
+<p><strong>Example</strong></p>
+<div class="highlight"><pre><code class="language-text" 
data-lang="text">[Driver]
+## - Note that this default DriverManagerEncoding of UTF-32 is for iODBC.
+DriverManagerEncoding=UTF-32
+ErrorMessagesPath=/opt/mapr/drillodbc/ErrorMessages
+
+LogLevel=0
+LogPath=
+SwapFilePath=/tmp
+
+# iODBC
+ODBCInstLib=libiodbcinst.dylib
+</code></pre></div>
+<h3 id="configuring-.mapr.drillodbc.ini">Configuring .mapr.drillodbc.ini</h3>
+
+<p>To configure the MapR Drill ODBC Driver in the 
<code>mapr.drillodbc.ini</code> configuration file, complete the following 
steps:</p>
+
+<ol>
+<li>Open the <code>mapr.drillodbc.ini</code> configuration file in a text 
editor.</li>
+<li>Edit the DriverManagerEncoding setting if necessary. The value is 
typically UTF-16 or UTF-32, but depends on the driver manager used. iODBC uses 
UTF-32 and unixODBC uses UTF-16. Review your ODBC Driver Manager documentation 
for the correct setting.</li>
+<li>Edit the <code>ODBCInstLib</code> setting. The value is the name of the 
<code>ODBCInst</code> shared library for the ODBC driver manager that you use. 
The configuration file defaults to the shared library for <code>iODBC</code>. 
In Linux, the shared library name for iODBC is <code>libiodbcinst.so</code>. In 
Mac OS X, the shared library name for <code>iODBC</code> is 
<code>libiodbcinst.dylib</code>.
+ <div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">Review your ODBC Driver Manager documentation for the correct
+setting.  </p>
+</div> 
+ Specify an absolute or relative filename for the library. If you use
+the relative file name, include the path to the library in the library path
+environment variable. In Linux, the library path environment variable is named
+<code>LD_LIBRARY_PATH</code>. In Mac OS X, the library path environment 
variable is
+named <code>DYLD_LIBRARY_PATH</code>.</li>
+<li>Save the <code>mapr.drillodbc.ini</code> configuration file.</li>
+</ol>
+
+<h3 id="next-step">Next Step</h3>
+
+<p>Refer to <a href="/docs/testing-the-odbc-connection">Testing the ODBC 
Connection on Linux and Mac OS X</a>.</p>
+
+    
+      
+        <div class="doc-nav">
+  
+  <span class="previous-toc"><a href="/docs/odbc-configuration-reference/">← 
ODBC Configuration Reference</a></span><span class="next-toc"><a 
href="/docs/configuring-odbc-on-windows/">Configuring ODBC on Windows 
→</a></span>
+</div>
+
+    
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