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## What changes were proposed in this pull request?
Change the format of the build command in the README to start with a `./` prefix
./build/mvn -DskipTests clean package
This increases stylistic consistency across the README- all the other commands have a `./` prefix. Having a visible `./` prefix also makes it clear to the user that the shell command requires the current working directory to be at the repository root.
## How was this patch tested?
README.md was reviewed both in raw markdown and in the Github rendered landing page for stylistic consistency.
Closes #25231 from Mister-Meeseeks/master.
Lead-authored-by: Douglas R Colkitt <douglas.colkitt@gmail.com>
Co-authored-by: Mister-Meeseeks <douglas.colkitt@gmail.com>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>
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Spark SQL
This module provides support for executing relational queries expressed in either SQL or the DataFrame/Dataset API.
Spark SQL is broken up into four subprojects:
- Catalyst (sql/catalyst) - An implementation-agnostic framework for manipulating trees of relational operators and expressions.
- Execution (sql/core) - A query planner / execution engine for translating Catalyst's logical query plans into Spark RDDs. This component also includes a new public interface, SQLContext, that allows users to execute SQL or LINQ statements against existing RDDs and Parquet files.
- Hive Support (sql/hive) - Includes an extension of SQLContext called HiveContext that allows users to write queries using a subset of HiveQL and access data from a Hive Metastore using Hive SerDes. There are also wrappers that allow users to run queries that include Hive UDFs, UDAFs, and UDTFs.
- HiveServer and CLI support (sql/hive-thriftserver) - Includes support for the SQL CLI (bin/spark-sql) and a HiveServer2 (for JDBC/ODBC) compatible server.
Running ./sql/create-docs.sh generates SQL documentation for built-in functions under sql/site.