spark-instrumented-optimizer/sql/catalyst
Gengliang Wang 6272222bc0 [SPARK-35719][SQL] Support type conversion between timestamp and timestamp without time zone type
### What changes were proposed in this pull request?

1. Extend the Cast expression and support TimestampType in casting to TimestampWithoutTZType.
2. There was a mistake in casting TimestampWithoutTZType as TimestampType in https://github.com/apache/spark/pull/32864. The target value should be `sourceValue - timeZoneOffset` instead of being the same value.

### Why are the changes needed?

To conform the ANSI SQL standard which requires to support such casting.

### Does this PR introduce _any_ user-facing change?

No, the new timestamp type is not released yet.

### How was this patch tested?

Unit test

Closes #32878 from gengliangwang/timestampToTimestampWithoutTZ.

Authored-by: Gengliang Wang <gengliang@apache.org>
Signed-off-by: Max Gekk <max.gekk@gmail.com>
2021-06-13 18:44:24 +03:00
..
benchmarks [SPARK-34950][TESTS] Update benchmark results to the ones created by GitHub Actions machines 2021-04-03 23:02:56 +03:00
src [SPARK-35719][SQL] Support type conversion between timestamp and timestamp without time zone type 2021-06-13 18:44:24 +03:00
pom.xml [SPARK-33212][BUILD] Upgrade to Hadoop 3.2.2 and move to shaded clients for Hadoop 3.x profile 2021-01-15 14:06:50 -08:00