Project: Apache Spark (App Definition and Development / Streaming & Messaging)
File: sql-distributed-sql-engine-spark-sql-cli.md

layout: global title: Spark SQL CLI displayTitle: Spark SQL CLI 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. Table of contents {:toc} The Spark SQL CLI is a convenient interactive command tool to run the Hive metastore service and execute SQL queries input from the command line. Note that the Spark SQL CLI cannot talk to the Thrift JDBC server. To start the Spark SQL CLI, run the following in the Spark directory: ./bin/spark-sql Configuration of Hive is done by placing your `hive-site.xml`, `core-site.xml` and `hdfs-site.xml` files in `conf/`. You may run `./bin/spark-sql --help` for a complete list of all available options. CLI options: -d,--define <key=value> Variable substitution to apply to Hive commands. e.g. -d A=B or --define A=B --database <databasename> Specify the database to use -e <quoted-query-string> SQL from command line -f <filename> SQL from files -H,--help Print help information --hiveconf <property=value> Use value for given property --hivevar <key=value> Variable substitution to apply to Hive commands. e.g. --hivevar A=B -i <filename> Initialization SQL file -S,--silent Silent mode in interactive shell -v,--verbose Verbose mode (echo executed SQL to the console) When invoked without the `-i`, the Spark SQL CLI will attempt to load `$HIVE_HOME/bin/.hiverc` and `$HOME/.hiverc` as initialization files. Spark SQL CLI supports running SQL from initialization script file(`-i`) or normal SQL file(`-f`), If path url don't have a scheme component, the path will be handled as local file. For example: `/path/to/spark-sql-cli.sql` equals to `file:///path/to/spark-sql-cli.sql`. User also can use Hadoop supported filesystems such as `s3://<mys3bucket>/path/to/spark-sql-cli.sql` or `hdfs://<namenode>:<port>/path/to/spark-sql-cli.sql`. <table> <thead><tr><th>Comment</th><th>Example</th></tr></thead> <tr> <td>simple comment</td> <td> <code> -- This is a simple comment. <br> SELECT 1; </code> </td> </tr> <tr> <td>bracketed comment</td> <td> <code> / This is a bracketed comment. / <br> SELECT 1; </code> </td> </tr> <tr> <td>nested bracketed comment</td> <td> <code> / This is a / nested bracketed comment/ ./ <br> SELECT 1; </code> </td> </tr> </table> When

is run without either the `-e` or `-f` option, it enters interactive shell mode. Use `;` (semicolon) to terminate commands. Notice: The CLI use `;` to terminate commands only when it's at the end of line, and it's not escaped by `\\;`. `;` is the only way to terminate commands. If the user types `SELECT 1` and presses enter, the console will just wait for input. If the user types multiple commands in one line like `SELECT 1; SELECT 2;`, the commands `SELECT 1` and `SELECT 2` will be executed separately. If `;` appears within a SQL statement (not the end of the line), then it has no special meanings: ```sql -- This is a ; comment SELECT ';' as a; ``` This is just a comment line followed by a SQL query which returns a string literal. ```sql /* This is a comment contains ; */ SELECT 1; ``` However, if ';' is the end of the line, it terminates the SQL statement. The example above will be terminated into `/ This is a comment contains ` and `/ SELECT 1`, Spark will submit these two commands separated and throw parser error (`unclosed bracketed comment` and `Syntax error at or near '*/'`). <table> <thead><tr><th>Command</th><th>Description</th></tr></thead> <tr> <td><code>quit</code> or <code>exit</code></td> <td>Exits the interactive shell.</td> </tr> <tr> <td><code>!&lt;command&gt;</code></td> <td>Executes a shell command from the Spark SQL CLI shell.</td> </tr> <tr> <td><code>dfs &lt;HDFS dfs command&gt;</code></td> <td>Executes a HDFS <a href="https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HDFSCommands.html#dfs">dfs command</a> from the Spark SQL CLI shell.</td> </tr> <tr> <td><code>&lt;query string&gt;</code></td> <td>Executes a Spark SQL query and prints results to standard output.</td> </tr> <tr> <td><code>source &lt;filepath&gt;</code></td> <td>Executes a script file inside the CLI.</td> </tr> </table> Example of running a query from the command line: ./bin/spark-sql -e 'SELECT COL FROM TBL' Example of setting Hive configuration variables: ./bin/spark-sql -e 'SELECT COL FROM TBL' --hiveconf hive.exec.scratchdir=/home/my/hive_scratch Example of setting Hive configuration variables and using it in the SQL query: ./bin/spark-sql -e 'SELECT ${hiveconf:aaa}' --hiveconf aaa=bbb --hiveconf hive.exec.scratchdir=/home/my/hive_scratch spark-sql> SELECT ${aaa}; bbb Example of setting Hive variables substitution: ./bin/spark-sql --hivevar aaa=bbb --define ccc=ddd spark-sql> SELECT ${aaa}, ${ccc}; bbb ddd Example of dumping data out from a query into a file using silent mode: ./bin/spark-sql -S -e 'SELECT COL FROM TBL' > result.txt Example of running a script non-interactively: ./bin/spark-sql -f /path/to/spark-sql-script.sql Example of running an initialization script before entering interactive mode: ./bin/spark-sql -i /path/to/spark-sql-init.sql Example of entering interactive mode: ./bin/spark-sql spark-sql> SELECT 1; 1 spark-sql> -- This is a simple comment. spark-sql> SELECT 1; 1 Example of entering interactive mode with escape `;` in comment: ./bin/spark-sql spark-sql>/* This is a comment contains \\; > It won't be terminated by \\; */ > SELECT 1; 1