Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/8391#discussion_r37833289
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JDBCRDD.scala
---
@@ -275,6 +275,7 @@ private[sql] class JDBCRDD(
*/
private def compileFilter(f: Filter): String = f match {
case EqualTo(attr, value) => s"$attr = ${compileValue(value)}"
+ case EqualNullSafe(attr, value) => s"$attr <=> ${compileValue(value)}"
--- End diff --
Since this is only in MySQL, I think the only options are:
1. don't support it
2. rewrite it as using isnull and normal equality.
3. add it to dialect.
Don't have a strong preference here. If 2 is not much slower, maybe just do
2?
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