[spark] branch master updated (8b0bdaa -> 66f5a42)

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    from 8b0bdaa  [SPARK-27671][SQL] Fix error when casting from a nested null in a struct
     add 66f5a42  [SPARK-27638][SQL] Cast string to date/timestamp in binary comparisons with dates/timestamps

No new revisions were added by this update.

Summary of changes:
 docs/sql-migration-guide-upgrade.md                |  2 +
 .../spark/sql/catalyst/analysis/TypeCoercion.scala | 15 ++--
 .../org/apache/spark/sql/internal/SQLConf.scala    |  9 +++
 .../sql-tests/results/predicate-functions.sql.out  | 12 ++--
 .../typeCoercion/native/binaryComparison.sql.out   | 80 ++++++++++-----------
 .../typeCoercion/native/promoteStrings.sql.out     | 84 +++++++++++-----------
 sql/core/src/test/resources/tpcds/q32.sql          |  2 +-
 .../scala/org/apache/spark/sql/SQLQuerySuite.scala | 78 ++++++++++++++++++++
 8 files changed, 186 insertions(+), 96 deletions(-)


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