rdblue commented on a change in pull request #23606: [SPARK-26666][SQL] Support
DSv2 overwrite and dynamic partition overwrite.
URL: https://github.com/apache/spark/pull/23606#discussion_r251259437
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicLogicalOperators.scala
##########
@@ -386,16 +385,64 @@ case class AppendData(
}
}
+/**
+ * Append data to an existing table.
+ */
+case class AppendData(
+ table: NamedRelation,
+ query: LogicalPlan,
+ isByName: Boolean) extends V2WriteCommand
+
object AppendData {
def byName(table: NamedRelation, df: LogicalPlan): AppendData = {
- new AppendData(table, df, true)
+ new AppendData(table, df, isByName = true)
}
def byPosition(table: NamedRelation, query: LogicalPlan): AppendData = {
- new AppendData(table, query, false)
+ new AppendData(table, query, isByName = false)
+ }
+}
+
+/**
+ * Overwrite data matching a filter in an existing table.
+ */
+case class OverwriteByExpression(
+ table: NamedRelation,
+ deleteExpr: Expression,
+ query: LogicalPlan,
+ isByName: Boolean) extends V2WriteCommand
+
+object OverwriteByExpression {
+ def byName(
+ table: NamedRelation, df: LogicalPlan, deleteExpr: Expression):
OverwriteByExpression = {
+ OverwriteByExpression(table, deleteExpr, df, isByName = true)
+ }
+
+ def byPosition(
+ table: NamedRelation, query: LogicalPlan, deleteExpr: Expression):
OverwriteByExpression = {
+ OverwriteByExpression(table, deleteExpr, query, isByName = false)
}
}
+/**
+ * Dynamically overwrite partitions in an existing table.
+ */
+case class OverwritePartitionsDynamic(
+ table: NamedRelation,
+ query: LogicalPlan,
+ isByName: Boolean) extends V2WriteCommand
+
+object OverwritePartitionsDynamic {
+ def byName(table: NamedRelation, df: LogicalPlan):
OverwritePartitionsDynamic = {
Review comment:
See my other comment. This signals that this corresponds to the behavior of
DataFrames.
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