cloud-fan commented on code in PR #40474:
URL: https://github.com/apache/spark/pull/40474#discussion_r1285370162
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TableOutputResolver.scala:
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@@ -34,6 +35,36 @@ import
org.apache.spark.sql.internal.SQLConf.StoreAssignmentPolicy
import org.apache.spark.sql.types.{ArrayType, DataType, DecimalType,
IntegralType, MapType, StructType}
object TableOutputResolver {
+
+ def resolveVariableOutputColumns(
+ expected: Seq[Expression],
+ query: LogicalPlan,
+ conf: SQLConf): LogicalPlan = {
+
+ if (expected.size != query.output.size) {
+ throw new AnalysisException(errorClass = "ASSIGNMENT_ARITY_MISMATCH",
+ messageParameters = Map("numTarget" -> expected.size.toString,
+ "numExpr" -> query.output.size.toString))
+ }
+
+ val resolved: Seq[NamedExpression] = {
+ query.output.zip(expected.asInstanceOf[Seq[VariableReference]]).map {
+ case (inputCol, expected) =>
+ if (DataTypeUtils.sameType(inputCol.dataType, expected.dataType)) {
+ inputCol
+ } else {
+ Alias(cast(inputCol, expected.dataType, conf, expected.varName),
expected.varName)()
Review Comment:
shall we respect the store assignment policy, like INSERT does?
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