feat: Add support for 'isoyear' in date_part function #19821
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Jefffrey
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Jan 15, 2026
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Which issue does this PR close?
Rationale for this change
isoyearpart is available in both PG and Spark EXTRACT functions.https://www.postgresql.org/docs/current/functions-datetime.html#:~:text=the%20week%20numbering.-,isoyear,-The%20ISO%208601
https://github.com/apache/spark/blob/a03bedb6c1281c5263a42bfd20608d2ee005ab05/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala#L3360
What changes are included in this PR?
Support for part
isoyearin date_part function.Are these changes tested?
yes in SLT
Are there any user-facing changes?
yes