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_r255749108
##########
File path: sql/core/src/main/scala/org/apache/spark/sql/sources/filters.scala
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@@ -218,3 +218,23 @@ case class StringEndsWith(attribute: String, value:
String) extends Filter {
case class StringContains(attribute: String, value: String) extends Filter {
override def references: Array[String] = Array(attribute)
}
+
+/**
+ * A filter that always evaluates to `true`.
+ */
+case class AlwaysTrue() extends Filter {
+ override def references: Array[String] = Array.empty
+}
+
+object AlwaysTrue extends AlwaysTrue {
+}
+
+/**
+ * A filter that always evaluates to `false`.
+ */
+case class AlwaysFalse() extends Filter {
Review comment:
Will do.
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