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Henry Robinson 477d6bd726 [SPARK-23500][SQL] Fix complex type simplification rules to apply to entire plan 
## What changes were proposed in this pull request?

Complex type simplification optimizer rules were not applied to the
entire plan, just the expressions reachable from the root node. This
patch fixes the rules to transform the entire plan.

## How was this patch tested?

New unit test + ran sql / core tests.

Author: Henry Robinson <henry@apache.org>
Author: Henry Robinson <henry@cloudera.com>

Closes #20687 from henryr/spark-25000.
2018-03-20 13:27:50 -07:00
..
catalyst [SPARK-23500][SQL] Fix complex type simplification rules to apply to entire plan 2018-03-20 13:27:50 -07:00
core [SPARK-23574][SQL] Report SinglePartition in DataSourceV2ScanExec when there's exactly 1 data reader factory. 2018-03-20 11:46:51 -07:00
hive [SPARK-23553][TESTS] Tests should not assume the default value of spark.sql.sources.default 2018-03-16 09:36:30 -07:00
hive-thriftserver [SPARK-23547][SQL] Cleanup the .pipeout file when the Hive Session closed 2018-03-13 11:31:32 -07:00
create-docs.sh [MINOR][DOCS] Minor doc fixes related with doc build and uses script dir in SQL doc gen script 2017-08-26 13:56:24 +09:00
gen-sql-markdown.py [SPARK-21485][FOLLOWUP][SQL][DOCS] Describes examples and arguments separately, and note/since in SQL built-in function documentation 2017-08-05 10:10:56 -07:00
mkdocs.yml [SPARK-21485][SQL][DOCS] Spark SQL documentation generation for built-in functions 2017-07-26 09:38:51 -07:00
README.md [SPARK-21485][SQL][DOCS] Spark SQL documentation generation for built-in functions 2017-07-26 09:38:51 -07:00

README.md

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 allows 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.