gengliangwang commented on code in PR #37013:
URL: https://github.com/apache/spark/pull/37013#discussion_r910567076
##########
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JdbcUtils.scala:
##########
@@ -599,10 +610,13 @@ object JdbcUtils extends Logging with SQLConfHelper {
stmt.setTimestamp(pos + 1,
toJavaTimestamp(instantToMicros(row.getAs[Instant](pos))))
} else {
(stmt: PreparedStatement, row: Row, pos: Int) =>
- stmt.setTimestamp(
- pos + 1,
-
toJavaTimestamp(localDateTimeToMicros(row.getAs[java.time.LocalDateTime](pos)))
- )
+ val micros =
localDateTimeToMicros(row.getAs[java.time.LocalDateTime](pos))
+ val seconds = Math.floorDiv(micros,
DateTimeConstants.MICROS_PER_SECOND)
+ val nanos = (micros - seconds * DateTimeConstants.MICROS_PER_SECOND)
*
+ DateTimeConstants.NANOS_PER_MICROS
+ val result = new java.sql.Timestamp(seconds *
DateTimeConstants.MILLIS_PER_SECOND)
Review Comment:
@beliefer it's basically the same except for rebasing the old timestmaps
```
def toJavaTimestamp(micros: Long): Timestamp = {
val rebasedMicros = rebaseGregorianToJulianMicros(micros)
val seconds = Math.floorDiv(rebasedMicros, MICROS_PER_SECOND)
val ts = new Timestamp(seconds * MILLIS_PER_SECOND)
val nanos = (rebasedMicros - seconds * MICROS_PER_SECOND) *
NANOS_PER_MICROS
ts.setNanos(nanos.toInt)
ts
}
```
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