cloud-fan commented on code in PR #36295:
URL: https://github.com/apache/spark/pull/36295#discussion_r902304551
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sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/jdbc/JDBCScanBuilder.scala:
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@@ -139,6 +142,25 @@ case class JDBCScanBuilder(
false
}
+ override def pushOffset(offset: Int): Boolean = {
+ if (jdbcOptions.pushDownOffset && !isPartiallyPushed) {
+ // We pushing down offset when data source have only one partition.
+ // There are some push down path.
Review Comment:
We can make the comment much simpler:
```
Spark pushes down LIMIT first, then OFFSET. In SQL statements, OFFSET is
applied before
LIMIT. Here we need to adjust the LIMIT value to match SQL statements.
```
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