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Kent Yao 54996be4d2 [SPARK-31527][SQL][TESTS][FOLLOWUP] Add a benchmark test for datetime add/subtract interval operations 
### What changes were proposed in this pull request?
With https://github.com/apache/spark/pull/28310, the operation of date +/- interval(m, d, 0) has been improved a lot.

According to the benchmark results, about 75% time cost is reduced because of no casting date to timestamp back and forth.

In this PR, we add a benchmark for these operations, and timestamp +/- interval operations as accessories.

### Why are the changes needed?

Performance test coverage, since these operations are missing in the DateTimeBenchmark.

### Does this PR introduce any user-facing change?

No, just test

### How was this patch tested?

regenerated benchmark results

Closes #28369 from yaooqinn/SPARK-31527-F.

Authored-by: Kent Yao <yaooqinn@hotmail.com>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
2020-04-28 15:39:28 +00:00
..
catalyst [SPARK-31586][SQL] Replace expression TimeSub(l, r) with TimeAdd(l -r) 2020-04-28 14:01:07 +00:00
core [SPARK-31527][SQL][TESTS][FOLLOWUP] Add a benchmark test for datetime add/subtract interval operations 2020-04-28 15:39:28 +00:00
hive [SPARK-31580][BUILD] Upgrade Apache ORC to 1.5.10 2020-04-27 18:56:30 -07:00
hive-thriftserver [SPARK-31388][SQL][TESTS] org.apache.spark.sql.hive.thriftserver.CliSuite doesn't match results correctly 2020-04-27 04:27:55 +00:00
create-docs.sh [SPARK-31550][SQL][DOCS] Set nondeterministic configurations with general meanings in sql configuration doc 2020-04-27 17:08:52 +09:00
gen-sql-api-docs.py [SPARK-31474][SQL][FOLLOWUP] Replace _FUNC_ placeholder with functionname in the note field of expression info 2020-04-23 13:33:04 +09:00
gen-sql-config-docs.py [SPARK-31550][SQL][DOCS] Set nondeterministic configurations with general meanings in sql configuration doc 2020-04-27 17:08:52 +09:00
gen-sql-functions-docs.py [SPARK-31562][SQL] Update ExpressionDescription for substring, current_date, and current_timestamp 2020-04-26 11:46:52 -07:00
mkdocs.yml [SPARK-30731] Update deprecated Mkdocs option 2020-02-19 17:28:58 +09:00
README.md [SPARK-30510][SQL][DOCS] Publicly document Spark SQL configuration options 2020-02-09 19:20:47 +09:00

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, and SQL configuration documentation that gets included as part of configuration.md in the main docs directory.