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author | Takuya UESHIN <ueshin@happy-camper.st> | 2014-07-16 11:13:38 -0700 |
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committer | Reynold Xin <rxin@apache.org> | 2014-07-16 11:13:38 -0700 |
commit | cc965eea510397642830acb21f61127b68c098d6 (patch) | |
tree | d76bed1cd08adf15c7265ba44b804023d1ac7ed5 /sql/catalyst | |
parent | fc7edc9e76f97b25e456ae7b72ef8636656f4f1a (diff) | |
download | spark-cc965eea510397642830acb21f61127b68c098d6.tar.gz spark-cc965eea510397642830acb21f61127b68c098d6.tar.bz2 spark-cc965eea510397642830acb21f61127b68c098d6.zip |
[SPARK-2518][SQL] Fix foldability of Substring expression.
This is a follow-up of #1428.
Author: Takuya UESHIN <ueshin@happy-camper.st>
Closes #1432 from ueshin/issues/SPARK-2518 and squashes the following commits:
37d1ace [Takuya UESHIN] Fix foldability of Substring expression.
Diffstat (limited to 'sql/catalyst')
2 files changed, 14 insertions, 3 deletions
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringOperations.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringOperations.scala index f1b27c3cb5..97fc3a3b14 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringOperations.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringOperations.scala @@ -216,6 +216,8 @@ case class Substring(str: Expression, pos: Expression, len: Expression) extends type EvaluatedType = Any + override def foldable = str.foldable && pos.foldable && len.foldable + def nullable: Boolean = str.nullable || pos.nullable || len.nullable def dataType: DataType = { if (!resolved) { diff --git a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/ConstantFoldingSuite.scala b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/ConstantFoldingSuite.scala index 0ff8206401..ff8d0d06c4 100644 --- a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/ConstantFoldingSuite.scala +++ b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/ConstantFoldingSuite.scala @@ -201,7 +201,12 @@ class ConstantFoldingSuite extends PlanTest { Like(Literal(null, StringType), "abc") as 'c13, Like("abc", Literal(null, StringType)) as 'c14, - Upper(Literal(null, StringType)) as 'c15) + Upper(Literal(null, StringType)) as 'c15, + + Substring(Literal(null, StringType), 0, 1) as 'c16, + Substring("abc", Literal(null, IntegerType), 1) as 'c17, + Substring("abc", 0, Literal(null, IntegerType)) as 'c18 + ) val optimized = Optimize(originalQuery.analyze) @@ -228,8 +233,12 @@ class ConstantFoldingSuite extends PlanTest { Literal(null, BooleanType) as 'c13, Literal(null, BooleanType) as 'c14, - Literal(null, StringType) as 'c15) - .analyze + Literal(null, StringType) as 'c15, + + Literal(null, StringType) as 'c16, + Literal(null, StringType) as 'c17, + Literal(null, StringType) as 'c18 + ).analyze comparePlans(optimized, correctAnswer) } |