Maxim Gekk created SPARK-27242:
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Summary: Avoid using default time zone in formatting
TIMESTAMP/DATE literals
Key: SPARK-27242
URL: https://issues.apache.org/jira/browse/SPARK-27242
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.4.0
Reporter: Maxim Gekk
Spark calls the toString() methods of java.sql.Timestamp/java.sql.Date in
formatting TIMESTAMP/DATE literals in Literal.sql:
https://github.com/apache/spark/blob/0f4f8160e6d01d2e263adcf39d53bd0a03fc1b73/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/literals.scala#L373-L374
. This is inconsistent to parsing TIMESTAMP/DATE literals in AstBuilder:
https://github.com/apache/spark/blob/a529be2930b1d69015f1ac8f85e590f197cf53cf/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala#L1594-L1597
where *spark.sql.session.timeZone* is used in parsing TIMESTAMP literals, and
DATE literals are parsed independently from time zone (actually in UTC time
zone). The ticket aims to make parsing and formatting date/timestamp literals
consistent, and use the SQL config for TIMESTAMP literals.
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