ODIn/spark-instrumented-optimizer
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity
spark-instrumented-optimizer/sql
History
Xiao Li ddf83159a8 [SPARK-28962][SQL][FOLLOW-UP] Add the parameter description for the Scala function API filter 
### What changes were proposed in this pull request?
This PR is a follow-up PR https://github.com/apache/spark/pull/25666 for adding the description and example for the Scala function API `filter`.

### Why are the changes needed?
It is hard to tell which parameter is the index column.

### Does this PR introduce any user-facing change?
No

### How was this patch tested?
N/A

Closes #27336 from gatorsmile/spark28962.

Authored-by: Xiao Li <gatorsmile@gmail.com>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>
2020-01-23 16:23:16 -08:00
..
catalyst [SPARK-27083][SQL][FOLLOW-UP] Rename spark.sql.subquery.reuse to spark.sql.execution.subquery.reuse.enabled 2020-01-23 15:34:54 -08:00
core [SPARK-28962][SQL][FOLLOW-UP] Add the parameter description for the Scala function API filter 2020-01-23 16:23:16 -08:00
hive [SPARK-30535][SQL] Revert "[] Migrate ALTER TABLE commands to the new framework 2020-01-22 22:43:46 -08:00
hive-thriftserver [SPARK-30252][SQL] Disallow negative scale of Decimal 2020-01-21 21:09:48 +08:00
create-docs.sh
gen-sql-markdown.py [SPARK-27328][SQL] Add 'deprecated' in ExpressionDescription for extended usage and SQL doc 2019-04-09 13:49:42 +08:00
mkdocs.yml
README.md [SPARK-28980][CORE][SQL][STREAMING][MLLIB] Remove most items deprecated in Spark 2.2.0 or earlier, for Spark 3 2019-09-09 10:19:40 -05:00

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 extensions that allow 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.