Repository: spark
Updated Branches:
refs/heads/master 1f4a648d4 -> e4f4886d7
[SPARK-2096][SQL] Correctly parse dot notations
First let me write down the current `projections` grammar of spark sql:
expression : orExpression
orExpression : andExpression {"or" andExpression}
andExpression : comparisonExpression {"and"
comparisonExpression}
comparisonExpression : termExpression | termExpression "="
termExpression | termExpression ">" termExpression | ...
termExpression : productExpression {"+"|"-" productExpression}
productExpression : baseExpression {"*"|"/"|"%" baseExpression}
baseExpression : expression "[" expression "]" | ... | ident |
...
ident : identChar {identChar | digit} | delimiters | ...
identChar : letter | "_" | "."
delimiters : "," | ";" | "(" | ")" | "[" | "]" | ...
projection : expression [["AS"] ident]
projections : projection { "," projection}
For something like `a.b.c[1]`, it will be parsed as:
<img src="http://img51.imgspice.com/i/03008/4iltjsnqgmtt_t.jpg"; border=0>
But for something like `a[1].b`, the current grammar can't parse it correctly.
A simple solution is written in `ParquetQuerySuite#NestedSqlParser`, changed
grammars are:
delimiters : "." | "," | ";" | "(" | ")" | "[" | "]" | ...
identChar : letter | "_"
baseExpression : expression "[" expression "]" | expression "."
ident | ... | ident | ...
This works well, but can't cover some corner case like `select t.a.b from table
as t`:
<img src="http://img51.imgspice.com/i/03008/v2iau3hoxoxg_t.jpg"; border=0>
`t.a.b` parsed as `GetField(GetField(UnResolved("t"), "a"), "b")` instead of
`GetField(UnResolved("t.a"), "b")` using this new grammar.
However, we can't resolve `t` as it's not a filed, but the whole table.(if we
could do this, then `select t from table as t` is legal, which is unexpected)
My solution is:
dotExpressionHeader : ident "." ident
baseExpression : expression "[" expression "]" | expression "."
ident | ... | dotExpressionHeader | ident | ...
I passed all test cases under sql locally and add a more complex case.
"arrayOfStruct.field1 to access all values of field1" is not supported yet.
Since this PR has changed a lot of code, I will open another PR for it.
I'm not familiar with the latter optimize phase, please correct me if I missed
something.
Author: Wenchen Fan <[email protected]>
Author: Michael Armbrust <[email protected]>
Closes #2230 from cloud-fan/dot and squashes the following commits:
e1a8898 [Wenchen Fan] remove support for arbitrary nested arrays
ee8a724 [Wenchen Fan] rollback LogicalPlan, support dot operation on nested
array type
a58df40 [Michael Armbrust] add regression test for doubly nested data
16bc4c6 [Wenchen Fan] some enhance
95d733f [Wenchen Fan] split long line
dc31698 [Wenchen Fan] SPARK-2096 Correctly parse dot notations
Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/e4f4886d
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/e4f4886d
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/e4f4886d
Branch: refs/heads/master
Commit: e4f4886d7148bf48f9e3462b83bfb1ecc7edbe31
Parents: 1f4a648
Author: Wenchen Fan <[email protected]>
Authored: Wed Sep 10 12:56:59 2014 -0700
Committer: Michael Armbrust <[email protected]>
Committed: Wed Sep 10 12:56:59 2014 -0700
----------------------------------------------------------------------
.../apache/spark/sql/catalyst/SqlParser.scala | 13 ++-
.../catalyst/plans/logical/LogicalPlan.scala | 6 +-
.../org/apache/spark/sql/json/JsonSuite.scala | 14 +++
.../apache/spark/sql/json/TestJsonData.scala | 26 +++++
.../spark/sql/parquet/ParquetQuerySuite.scala | 102 +++++--------------
.../sql/hive/execution/SQLQuerySuite.scala | 17 +++-
6 files changed, 88 insertions(+), 90 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/spark/blob/e4f4886d/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/SqlParser.scala
----------------------------------------------------------------------
diff --git
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/SqlParser.scala
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/SqlParser.scala
index a04b4a9..ca69531 100755
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/SqlParser.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/SqlParser.scala
@@ -357,16 +357,25 @@ class SqlParser extends StandardTokenParsers with
PackratParsers {
expression ~ "[" ~ expression <~ "]" ^^ {
case base ~ _ ~ ordinal => GetItem(base, ordinal)
} |
+ (expression <~ ".") ~ ident ^^ {
+ case base ~ fieldName => GetField(base, fieldName)
+ } |
TRUE ^^^ Literal(true, BooleanType) |
FALSE ^^^ Literal(false, BooleanType) |
cast |
"(" ~> expression <~ ")" |
function |
"-" ~> literal ^^ UnaryMinus |
+ dotExpressionHeader |
ident ^^ UnresolvedAttribute |
"*" ^^^ Star(None) |
literal
+ protected lazy val dotExpressionHeader: Parser[Expression] =
+ (ident <~ ".") ~ ident ~ rep("." ~> ident) ^^ {
+ case i1 ~ i2 ~ rest => UnresolvedAttribute(i1 + "." + i2 +
rest.mkString(".", ".", ""))
+ }
+
protected lazy val dataType: Parser[DataType] =
STRING ^^^ StringType | TIMESTAMP ^^^ TimestampType
}
@@ -380,7 +389,7 @@ class SqlLexical(val keywords: Seq[String]) extends
StdLexical {
delimiters += (
"@", "*", "+", "-", "<", "=", "<>", "!=", "<=", ">=", ">", "/", "(", ")",
- ",", ";", "%", "{", "}", ":", "[", "]"
+ ",", ";", "%", "{", "}", ":", "[", "]", "."
)
override lazy val token: Parser[Token] = (
@@ -401,7 +410,7 @@ class SqlLexical(val keywords: Seq[String]) extends
StdLexical {
| failure("illegal character")
)
- override def identChar = letter | elem('_') | elem('.')
+ override def identChar = letter | elem('_')
override def whitespace: Parser[Any] = rep(
whitespaceChar
http://git-wip-us.apache.org/repos/asf/spark/blob/e4f4886d/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala
----------------------------------------------------------------------
diff --git
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala
index f81d911..bae491f 100644
---
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala
+++
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala
@@ -104,11 +104,7 @@ abstract class LogicalPlan extends QueryPlan[LogicalPlan] {
case Seq((a, Nil)) => Some(a) // One match, no nested fields, use it.
// One match, but we also need to extract the requested nested field.
case Seq((a, nestedFields)) =>
- a.dataType match {
- case StructType(fields) =>
- Some(Alias(nestedFields.foldLeft(a: Expression)(GetField),
nestedFields.last)())
- case _ => None // Don't know how to resolve these field references
- }
+ Some(Alias(nestedFields.foldLeft(a: Expression)(GetField),
nestedFields.last)())
case Seq() => None // No matches.
case ambiguousReferences =>
throw new TreeNodeException(
http://git-wip-us.apache.org/repos/asf/spark/blob/e4f4886d/sql/core/src/test/scala/org/apache/spark/sql/json/JsonSuite.scala
----------------------------------------------------------------------
diff --git a/sql/core/src/test/scala/org/apache/spark/sql/json/JsonSuite.scala
b/sql/core/src/test/scala/org/apache/spark/sql/json/JsonSuite.scala
index 05513a1..301d482 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/json/JsonSuite.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/json/JsonSuite.scala
@@ -581,4 +581,18 @@ class JsonSuite extends QueryTest {
"this is a simple string.") :: Nil
)
}
+
+ test("SPARK-2096 Correctly parse dot notations") {
+ val jsonSchemaRDD = jsonRDD(complexFieldAndType2)
+ jsonSchemaRDD.registerTempTable("jsonTable")
+
+ checkAnswer(
+ sql("select arrayOfStruct[0].field1, arrayOfStruct[0].field2 from
jsonTable"),
+ (true, "str1") :: Nil
+ )
+ checkAnswer(
+ sql("select complexArrayOfStruct[0].field1[1].inner2[0],
complexArrayOfStruct[1].field2[0][1] from jsonTable"),
+ ("str2", 6) :: Nil
+ )
+ }
}
http://git-wip-us.apache.org/repos/asf/spark/blob/e4f4886d/sql/core/src/test/scala/org/apache/spark/sql/json/TestJsonData.scala
----------------------------------------------------------------------
diff --git
a/sql/core/src/test/scala/org/apache/spark/sql/json/TestJsonData.scala
b/sql/core/src/test/scala/org/apache/spark/sql/json/TestJsonData.scala
index a88310b..b3f95f0 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/json/TestJsonData.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/json/TestJsonData.scala
@@ -82,4 +82,30 @@ object TestJsonData {
"""{"c":[33, 44]}""" ::
"""{"d":{"field":true}}""" ::
"""{"e":"str"}""" :: Nil)
+
+ val complexFieldAndType2 =
+ TestSQLContext.sparkContext.parallelize(
+ """{"arrayOfStruct":[{"field1": true, "field2": "str1"}, {"field1":
false}, {"field3": null}],
+ "complexArrayOfStruct": [
+ {
+ "field1": [
+ {
+ "inner1": "str1"
+ },
+ {
+ "inner2": ["str2", "str22"]
+ }],
+ "field2": [[1, 2], [3, 4]]
+ },
+ {
+ "field1": [
+ {
+ "inner2": ["str3", "str33"]
+ },
+ {
+ "inner1": "str4"
+ }],
+ "field2": [[5, 6], [7, 8]]
+ }]
+ }""" :: Nil)
}
http://git-wip-us.apache.org/repos/asf/spark/blob/e4f4886d/sql/core/src/test/scala/org/apache/spark/sql/parquet/ParquetQuerySuite.scala
----------------------------------------------------------------------
diff --git
a/sql/core/src/test/scala/org/apache/spark/sql/parquet/ParquetQuerySuite.scala
b/sql/core/src/test/scala/org/apache/spark/sql/parquet/ParquetQuerySuite.scala
index 42923b6..b0a06cd 100644
---
a/sql/core/src/test/scala/org/apache/spark/sql/parquet/ParquetQuerySuite.scala
+++
b/sql/core/src/test/scala/org/apache/spark/sql/parquet/ParquetQuerySuite.scala
@@ -17,19 +17,14 @@
package org.apache.spark.sql.parquet
+import org.apache.hadoop.fs.{FileSystem, Path}
+import org.apache.hadoop.mapreduce.Job
import org.scalatest.{BeforeAndAfterAll, FunSuiteLike}
-
import parquet.hadoop.ParquetFileWriter
import parquet.hadoop.util.ContextUtil
-import org.apache.hadoop.fs.{FileSystem, Path}
-import org.apache.hadoop.mapreduce.Job
-
-import org.apache.spark.SparkContext
import org.apache.spark.sql._
-import org.apache.spark.sql.catalyst.{SqlLexical, SqlParser}
-import org.apache.spark.sql.catalyst.analysis.{Star, UnresolvedAttribute}
import org.apache.spark.sql.catalyst.expressions._
-import org.apache.spark.sql.catalyst.types.{BooleanType, IntegerType}
+import org.apache.spark.sql.catalyst.types.IntegerType
import org.apache.spark.sql.catalyst.util.getTempFilePath
import org.apache.spark.sql.test.TestSQLContext
import org.apache.spark.sql.test.TestSQLContext._
@@ -87,11 +82,7 @@ class ParquetQuerySuite extends QueryTest with FunSuiteLike
with BeforeAndAfterA
var testRDD: SchemaRDD = null
- // TODO: remove this once SqlParser can parse nested select statements
- var nestedParserSqlContext: NestedParserSQLContext = null
-
override def beforeAll() {
- nestedParserSqlContext = new
NestedParserSQLContext(TestSQLContext.sparkContext)
ParquetTestData.writeFile()
ParquetTestData.writeFilterFile()
ParquetTestData.writeNestedFile1()
@@ -718,11 +709,9 @@ class ParquetQuerySuite extends QueryTest with
FunSuiteLike with BeforeAndAfterA
}
test("Projection in addressbook") {
- val data = nestedParserSqlContext
- .parquetFile(ParquetTestData.testNestedDir1.toString)
- .toSchemaRDD
+ val data = parquetFile(ParquetTestData.testNestedDir1.toString).toSchemaRDD
data.registerTempTable("data")
- val query = nestedParserSqlContext.sql("SELECT owner, contacts[1].name
FROM data")
+ val query = sql("SELECT owner, contacts[1].name FROM data")
val tmp = query.collect()
assert(tmp.size === 2)
assert(tmp(0).size === 2)
@@ -733,21 +722,19 @@ class ParquetQuerySuite extends QueryTest with
FunSuiteLike with BeforeAndAfterA
}
test("Simple query on nested int data") {
- val data = nestedParserSqlContext
- .parquetFile(ParquetTestData.testNestedDir2.toString)
- .toSchemaRDD
+ val data = parquetFile(ParquetTestData.testNestedDir2.toString).toSchemaRDD
data.registerTempTable("data")
- val result1 = nestedParserSqlContext.sql("SELECT entries[0].value FROM
data").collect()
+ val result1 = sql("SELECT entries[0].value FROM data").collect()
assert(result1.size === 1)
assert(result1(0).size === 1)
assert(result1(0)(0) === 2.5)
- val result2 = nestedParserSqlContext.sql("SELECT entries[0] FROM
data").collect()
+ val result2 = sql("SELECT entries[0] FROM data").collect()
assert(result2.size === 1)
val subresult1 =
result2(0)(0).asInstanceOf[CatalystConverter.StructScalaType[_]]
assert(subresult1.size === 2)
assert(subresult1(0) === 2.5)
assert(subresult1(1) === false)
- val result3 = nestedParserSqlContext.sql("SELECT outerouter FROM
data").collect()
+ val result3 = sql("SELECT outerouter FROM data").collect()
val subresult2 = result3(0)(0)
.asInstanceOf[CatalystConverter.ArrayScalaType[_]](0)
.asInstanceOf[CatalystConverter.ArrayScalaType[_]]
@@ -760,19 +747,18 @@ class ParquetQuerySuite extends QueryTest with
FunSuiteLike with BeforeAndAfterA
}
test("nested structs") {
- val data = nestedParserSqlContext
- .parquetFile(ParquetTestData.testNestedDir3.toString)
+ val data = parquetFile(ParquetTestData.testNestedDir3.toString)
.toSchemaRDD
data.registerTempTable("data")
- val result1 = nestedParserSqlContext.sql("SELECT
booleanNumberPairs[0].value[0].truth FROM data").collect()
+ val result1 = sql("SELECT booleanNumberPairs[0].value[0].truth FROM
data").collect()
assert(result1.size === 1)
assert(result1(0).size === 1)
assert(result1(0)(0) === false)
- val result2 = nestedParserSqlContext.sql("SELECT
booleanNumberPairs[0].value[1].truth FROM data").collect()
+ val result2 = sql("SELECT booleanNumberPairs[0].value[1].truth FROM
data").collect()
assert(result2.size === 1)
assert(result2(0).size === 1)
assert(result2(0)(0) === true)
- val result3 = nestedParserSqlContext.sql("SELECT
booleanNumberPairs[1].value[0].truth FROM data").collect()
+ val result3 = sql("SELECT booleanNumberPairs[1].value[0].truth FROM
data").collect()
assert(result3.size === 1)
assert(result3(0).size === 1)
assert(result3(0)(0) === false)
@@ -796,11 +782,9 @@ class ParquetQuerySuite extends QueryTest with
FunSuiteLike with BeforeAndAfterA
}
test("map with struct values") {
- val data = nestedParserSqlContext
- .parquetFile(ParquetTestData.testNestedDir4.toString)
- .toSchemaRDD
+ val data = parquetFile(ParquetTestData.testNestedDir4.toString).toSchemaRDD
data.registerTempTable("mapTable")
- val result1 = nestedParserSqlContext.sql("SELECT data2 FROM
mapTable").collect()
+ val result1 = sql("SELECT data2 FROM mapTable").collect()
assert(result1.size === 1)
val entry1 = result1(0)(0)
.asInstanceOf[CatalystConverter.MapScalaType[String,
CatalystConverter.StructScalaType[_]]]
@@ -814,7 +798,7 @@ class ParquetQuerySuite extends QueryTest with FunSuiteLike
with BeforeAndAfterA
assert(entry2 != null)
assert(entry2(0) === 49)
assert(entry2(1) === null)
- val result2 = nestedParserSqlContext.sql("""SELECT
data2["seven"].payload1, data2["seven"].payload2 FROM mapTable""").collect()
+ val result2 = sql("""SELECT data2["seven"].payload1,
data2["seven"].payload2 FROM mapTable""").collect()
assert(result2.size === 1)
assert(result2(0)(0) === 42.toLong)
assert(result2(0)(1) === "the answer")
@@ -825,15 +809,12 @@ class ParquetQuerySuite extends QueryTest with
FunSuiteLike with BeforeAndAfterA
// has no effect in this test case
val tmpdir = Utils.createTempDir()
Utils.deleteRecursively(tmpdir)
- val result = nestedParserSqlContext
- .parquetFile(ParquetTestData.testNestedDir1.toString)
- .toSchemaRDD
+ val result =
parquetFile(ParquetTestData.testNestedDir1.toString).toSchemaRDD
result.saveAsParquetFile(tmpdir.toString)
- nestedParserSqlContext
- .parquetFile(tmpdir.toString)
+ parquetFile(tmpdir.toString)
.toSchemaRDD
.registerTempTable("tmpcopy")
- val tmpdata = nestedParserSqlContext.sql("SELECT owner, contacts[1].name
FROM tmpcopy").collect()
+ val tmpdata = sql("SELECT owner, contacts[1].name FROM tmpcopy").collect()
assert(tmpdata.size === 2)
assert(tmpdata(0).size === 2)
assert(tmpdata(0)(0) === "Julien Le Dem")
@@ -844,20 +825,17 @@ class ParquetQuerySuite extends QueryTest with
FunSuiteLike with BeforeAndAfterA
}
test("Writing out Map and reading it back in") {
- val data = nestedParserSqlContext
- .parquetFile(ParquetTestData.testNestedDir4.toString)
- .toSchemaRDD
+ val data = parquetFile(ParquetTestData.testNestedDir4.toString).toSchemaRDD
val tmpdir = Utils.createTempDir()
Utils.deleteRecursively(tmpdir)
data.saveAsParquetFile(tmpdir.toString)
- nestedParserSqlContext
- .parquetFile(tmpdir.toString)
+ parquetFile(tmpdir.toString)
.toSchemaRDD
.registerTempTable("tmpmapcopy")
- val result1 = nestedParserSqlContext.sql("""SELECT data1["key2"] FROM
tmpmapcopy""").collect()
+ val result1 = sql("""SELECT data1["key2"] FROM tmpmapcopy""").collect()
assert(result1.size === 1)
assert(result1(0)(0) === 2)
- val result2 = nestedParserSqlContext.sql("SELECT data2 FROM
tmpmapcopy").collect()
+ val result2 = sql("SELECT data2 FROM tmpmapcopy").collect()
assert(result2.size === 1)
val entry1 = result2(0)(0)
.asInstanceOf[CatalystConverter.MapScalaType[String,
CatalystConverter.StructScalaType[_]]]
@@ -871,42 +849,10 @@ class ParquetQuerySuite extends QueryTest with
FunSuiteLike with BeforeAndAfterA
assert(entry2 != null)
assert(entry2(0) === 49)
assert(entry2(1) === null)
- val result3 = nestedParserSqlContext.sql("""SELECT
data2["seven"].payload1, data2["seven"].payload2 FROM tmpmapcopy""").collect()
+ val result3 = sql("""SELECT data2["seven"].payload1,
data2["seven"].payload2 FROM tmpmapcopy""").collect()
assert(result3.size === 1)
assert(result3(0)(0) === 42.toLong)
assert(result3(0)(1) === "the answer")
Utils.deleteRecursively(tmpdir)
}
}
-
-// TODO: the code below is needed temporarily until the standard parser is
able to parse
-// nested field expressions correctly
-class NestedParserSQLContext(@transient override val sparkContext:
SparkContext) extends SQLContext(sparkContext) {
- override protected[sql] val parser = new NestedSqlParser()
-}
-
-class NestedSqlLexical(override val keywords: Seq[String]) extends
SqlLexical(keywords) {
- override def identChar = letter | elem('_')
- delimiters += (".")
-}
-
-class NestedSqlParser extends SqlParser {
- override val lexical = new NestedSqlLexical(reservedWords)
-
- override protected lazy val baseExpression: PackratParser[Expression] =
- expression ~ "[" ~ expression <~ "]" ^^ {
- case base ~ _ ~ ordinal => GetItem(base, ordinal)
- } |
- expression ~ "." ~ ident ^^ {
- case base ~ _ ~ fieldName => GetField(base, fieldName)
- } |
- TRUE ^^^ Literal(true, BooleanType) |
- FALSE ^^^ Literal(false, BooleanType) |
- cast |
- "(" ~> expression <~ ")" |
- function |
- "-" ~> literal ^^ UnaryMinus |
- ident ^^ UnresolvedAttribute |
- "*" ^^^ Star(None) |
- literal
-}
http://git-wip-us.apache.org/repos/asf/spark/blob/e4f4886d/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLQuerySuite.scala
----------------------------------------------------------------------
diff --git
a/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLQuerySuite.scala
b/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLQuerySuite.scala
index 635a9fb..b99caf7 100644
---
a/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLQuerySuite.scala
+++
b/sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/SQLQuerySuite.scala
@@ -17,13 +17,13 @@
package org.apache.spark.sql.hive.execution
-import scala.reflect.ClassTag
-
-import org.apache.spark.sql.{SQLConf, QueryTest}
-import org.apache.spark.sql.execution.{BroadcastHashJoin, ShuffledHashJoin}
-import org.apache.spark.sql.hive.test.TestHive
+import org.apache.spark.sql.QueryTest
import org.apache.spark.sql.hive.test.TestHive._
+case class Nested1(f1: Nested2)
+case class Nested2(f2: Nested3)
+case class Nested3(f3: Int)
+
/**
* A collection of hive query tests where we generate the answers ourselves
instead of depending on
* Hive to generate them (in contrast to HiveQuerySuite). Often this is
because the query is
@@ -47,4 +47,11 @@ class SQLQuerySuite extends QueryTest {
GROUP BY key, value
ORDER BY value) a""").collect().toSeq)
}
+
+ test("double nested data") {
+ sparkContext.parallelize(Nested1(Nested2(Nested3(1))) ::
Nil).registerTempTable("nested")
+ checkAnswer(
+ sql("SELECT f1.f2.f3 FROM nested"),
+ 1)
+ }
}
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