[jira] [Created] (SPARK-27242) Avoid using default time zone in formatting TIMESTAMP/DATE literals

["Maxim Gekk (JIRA)" <ji...@apache.org>]

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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