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Angerszhuuuu 2356cdd420 [SPARK-34814][SQL] LikeSimplification should handle NULL 
### What changes were proposed in this pull request?
LikeSimplification should handle NULL.

UT will failed  before this pr
```
  test("SPARK-34814: LikeSimplification should handle NULL") {
    withSQLConf(SQLConf.OPTIMIZER_EXCLUDED_RULES.key ->
      ConstantFolding.getClass.getName.stripSuffix("$")) {
      checkEvaluation(Literal.create("foo", StringType)
        .likeAll("%foo%", Literal.create(null, StringType)), null)
    }
  }

[info] - test *** FAILED *** (2 seconds, 443 milliseconds)
[info]   java.lang.NullPointerException:
[info]   at org.apache.spark.sql.catalyst.optimizer.LikeSimplification$.$anonfun$simplifyMultiLike$1(expressions.scala:697)
[info]   at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:238)
[info]   at scala.collection.mutable.ResizableArray.foreach(ResizableArray.scala:62)
[info]   at scala.collection.mutable.ResizableArray.foreach$(ResizableArray.scala:55)
[info]   at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:49)
[info]   at scala.collection.TraversableLike.map(TraversableLike.scala:238)
[info]   at scala.collection.TraversableLike.map$(TraversableLike.scala:231)
[info]   at scala.collection.AbstractTraversable.map(Traversable.scala:108)
[info]   at org.apache.spark.sql.catalyst.optimizer.LikeSimplification$.org$apache$spark$sql$catalyst$optimizer$LikeSimplification$$simplifyMultiLike(expressions.scala:697)
[info]   at org.apache.spark.sql.catalyst.optimizer.LikeSimplification$$anonfun$apply$9.applyOrElse(expressions.scala:722)
[info]   at org.apache.spark.sql.catalyst.optimizer.LikeSimplification$$anonfun$apply$9.applyOrElse(expressions.scala:714)
[info]   at org.apache.spark.sql.catalyst.trees.TreeNode.$anonfun$transformDown$1(TreeNode.scala:316)
[info]   at org.apache.spark.sql.catalyst.trees.CurrentOrigin$.withOrigin(TreeNode.scala:72)
[info]   at org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:316)
[info]   at org.apache.spark.sql.catalyst.trees.TreeNode.$anonfun$transformDown$3(TreeNode.scala:321)
[info]   at org.apache.spark.sql.catalyst.trees.TreeNode.$anonfun$mapChildren$1(TreeNode.scala:406)
[info]   at org.apache.spark.sql.catalyst.trees.TreeNode.mapProductIterator(TreeNode.scala:242)
[info]   at org.apache.spark.sql.catalyst.trees.TreeNode.mapChildren(TreeNode.scala:404)
[info]   at org.apache.spark.sql.catalyst.trees.TreeNode.mapChildren(TreeNode.scala:357)
[info]   at org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:321)
[info]   at org.apache.spark.sql.catalyst.plans.QueryPlan.$anonfun$transformExpressionsDown$1(QueryPlan.scala:94)
[info]   at org.apache.spark.sql.catalyst.plans.QueryPlan.$anonfun$mapExpressions$1(QueryPlan.scala:116)
[info]   at org.apache.spark.sql.catalyst.trees.CurrentOrigin$.withOrigin(TreeNode.scala:72)
```

### Why are the changes needed?
Fix bug

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

### How was this patch tested?
Added UT

Closes #31976 from AngersZhuuuu/SPARK-34814.

Authored-by: Angerszhuuuu <angers.zhu@gmail.com>
Signed-off-by: HyukjinKwon <gurwls223@apache.org>
2021-03-29 12:05:00 +09:00
..
catalyst [SPARK-34814][SQL] LikeSimplification should handle NULL 2021-03-29 12:05:00 +09:00
core [SPARK-34876][SQL] Fill defaultResult of non-nullable aggregates 2021-03-29 11:47:08 +09:00
hive [SPARK-34542][BUILD] Upgrade Parquet to 1.12.0 2021-03-27 07:56:29 -07:00
hive-thriftserver [SPARK-34700][SQL] SessionCatalog's temporary view related APIs should take/return more concrete types 2021-03-22 08:17:54 +00:00
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-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.