6ade5cbb49
## What changes were proposed in this pull request? Easy fix in the documentation. ## How was this patch tested? N/A Closes #20948 Author: Daniel Sakuma <dsakuma@gmail.com> Closes #20928 from dsakuma/fix_typo_configuration_docs.
13 lines
1.1 KiB
Markdown
13 lines
1.1 KiB
Markdown
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`.
|