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[SPARK-38899][SQL]DS V2 supports push down datetime functions #36663

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[SPARK-38899][SQL]DS V2 supports push down datetime functions #36663

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[SPARK-38899][SQL]DS V2 supports push down datetime functions
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chenzhx committed Jul 2, 2022
commit 0e135cdd992248f1a3e431f87508e1678f2cfdc9
11 changes: 6 additions & 5 deletions sql/core/src/main/scala/org/apache/spark/sql/jdbc/H2Dialect.scala
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Expand Up @@ -140,12 +140,13 @@ private[sql] object H2Dialect extends JdbcDialect {
class H2JDBCSQLBuilder extends JDBCSQLBuilder {

override def visitExtract(field: String, source: String): String = {
field match {
case "DAY_OF_WEEK" => s"EXTRACT(ISO_DAY_OF_WEEK FROM $source)"
case "WEEK" => s"EXTRACT(ISO_WEEK FROM $source)"
case "YEAR_OF_WEEK" => s"EXTRACT(ISO_WEEK_YEAR FROM $source)"
case _ => super.visitExtract(field, source)
val newField = field match {
case "DAY_OF_WEEK" => "ISO_DAY_OF_WEEK"
case "WEEK" => "ISO_WEEK"
case "YEAR_OF_WEEK" => "ISO_WEEK_YEAR"
case _ => field
}
s"EXTRACT($newField FROM $source)"
}
}
}