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Kazuyuki Tanimura d3e3df17aa [SPARK-36644][SQL] Push down boolean column filter 
### What changes were proposed in this pull request?
This PR proposes to improve `DataSourceStrategy` to be able to push down boolean column filters. Currently boolean column filters do not get pushed down and may cause unnecessary IO.

### Why are the changes needed?
The following query does not push down the filter in the current implementation
```
SELECT * FROM t WHERE boolean_field
```
although the following query pushes down the filter as expected.
```
SELECT * FROM t WHERE boolean_field = true
```
This is because the Physical Planner (`DataSourceStrategy`) currently only pushes down limited expression patterns like`EqualTo`.
It is fair for Spark SQL users to expect `boolean_field` performs the same as `boolean_field = true`.

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

### How was this patch tested?
Added unit tests
```
build/sbt "core/testOnly *DataSourceStrategySuite   -- -z SPARK-36644"
```

Closes #33898 from kazuyukitanimura/SPARK-36644.

Authored-by: Kazuyuki Tanimura <ktanimura@apple.com>
Signed-off-by: DB Tsai <d_tsai@apple.com>
2021-09-03 07:39:14 +00:00
..
catalyst [SPARK-36652][SQL] AQE dynamic join selection should not apply to non-equi join 2021-09-02 20:04:49 -07:00
core [SPARK-36644][SQL] Push down boolean column filter 2021-09-03 07:39:14 +00:00
hive [SPARK-36327][SQL] Spark sql creates staging dir inside database directory rather than creating inside table directory 2021-08-27 12:58:28 -07:00
hive-thriftserver [SPARK-36400][TEST][FOLLOWUP] Add test for redacting sensitive information in UI by config 2021-09-02 17:04:49 +09:00
create-docs.sh [SPARK-34010][SQL][DODCS] Use python3 instead of python in SQL documentation build 2021-01-05 19:48:10 +09:00
gen-sql-api-docs.py [SPARK-34747][SQL][DOCS] Add virtual operators to the built-in function document 2021-03-19 10:19:26 +09:00
gen-sql-config-docs.py [SPARK-36657][SQL] Update comment in 'gen-sql-config-docs.py' 2021-09-02 18:50:59 -07:00
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.