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[SPARK-16850][SQL] Improve type checking error message for greatest/least #14453

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[SPARK-16850][SQL] Improve type checking error message for greatest/least #14453

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[SPARK-16850][SQL] Improve type checking error message for greatest/l…
petermaxlee Aug 2, 2016
e701a15
Add unit test fil
petermaxlee Aug 2, 2016
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Add unit test fil
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@petermaxlee
petermaxlee committed Aug 2, 2016
commit e701a15eb4464fdd6008fd158f5e52d42c5ba5fb
13 changes: 13 additions & 0 deletions ...src/test/scala/org/apache/spark/sql/catalyst/expressions/ConditionalExpressionSuite.scala
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Expand Up @@ -21,6 +21,7 @@ import java.sql.{Date, Timestamp}

import org.apache.spark.SparkFunSuite
import org.apache.spark.sql.catalyst.InternalRow
import org.apache.spark.sql.catalyst.analysis.TypeCheckResult.TypeCheckFailure
import org.apache.spark.sql.catalyst.dsl.expressions._
import org.apache.spark.sql.types._

Expand Down Expand Up @@ -181,6 +182,12 @@ class ConditionalExpressionSuite extends SparkFunSuite with ExpressionEvalHelper
Literal(Timestamp.valueOf("2015-07-01 10:00:00")))),
Timestamp.valueOf("2015-07-01 08:00:00"), InternalRow.empty)

// Type checking error
assert(
Least(Seq(Literal(1), Literal("1"))).checkInputDataTypes() ==
TypeCheckFailure("The expressions should all have the same type, " +
"got LEAST(int, string)."))

DataTypeTestUtils.ordered.foreach { dt =>
checkConsistencyBetweenInterpretedAndCodegen(Least, dt, 2)
}
Expand Down Expand Up @@ -227,6 +234,12 @@ class ConditionalExpressionSuite extends SparkFunSuite with ExpressionEvalHelper
Literal(Timestamp.valueOf("2015-07-01 10:00:00")))),
Timestamp.valueOf("2015-07-01 10:00:00"), InternalRow.empty)

// Type checking error
assert(
Greatest(Seq(Literal(1), Literal("1"))).checkInputDataTypes() ==
TypeCheckFailure("The expressions should all have the same type, " +
"got GREATEST(int, string)."))

DataTypeTestUtils.ordered.foreach { dt =>
checkConsistencyBetweenInterpretedAndCodegen(Greatest, dt, 2)
}
Expand Down