cloud-fan commented on a change in pull request #23597: [SPARK-26653][SQL] Use 
Proleptic Gregorian calendar in parsing JDBC lower/upper bounds
URL: https://github.com/apache/spark/pull/23597#discussion_r249625582
 
 

 ##########
 File path: 
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JDBCRelation.scala
 ##########
 @@ -174,10 +174,19 @@ private[sql] object JDBCRelation extends Logging {
     (dialect.quoteIdentifier(column.name), column.dataType)
   }
 
-  private def toInternalBoundValue(value: String, columnType: DataType): Long 
= columnType match {
-    case _: NumericType => value.toLong
-    case DateType => DateTimeUtils.fromJavaDate(Date.valueOf(value)).toLong
-    case TimestampType => 
DateTimeUtils.fromJavaTimestamp(Timestamp.valueOf(value))
+  private def toInternalBoundValue(value: String, columnType: DataType): Long 
= {
 
 Review comment:
   we should pass in the timezone id, just like what we did for 
`toBoundValueInWhereClause`

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