jiaan.geng created SPARK-30707:
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Summary: Lead/Lag window function throws AnalysisException without
ORDER BY clause
Key: SPARK-30707
URL: https://issues.apache.org/jira/browse/SPARK-30707
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 3.0.0
Reporter: jiaan.geng
{code:java}
Lead/Lag window function throws AnalysisException without ORDER BY clause:
SELECT lead(ten, four + 1) OVER (PARTITION BY four), ten, four
FROM (SELECT * FROM tenk1 WHERE unique2 < 10 ORDER BY four, ten)s
org.apache.spark.sql.AnalysisException
Window function lead(ten#x, (four#x + 1), null) requires window to be ordered,
please add ORDER BY clause. For example SELECT lead(ten#x, (four#x + 1),
null)(value_expr) OVER (PARTITION BY window_partition ORDER BY window_ordering)
from table;
{code}
Maybe we need fix this issue.
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