itholic commented on code in PR #38569:
URL: https://github.com/apache/spark/pull/38569#discussion_r1017351734
##########
core/src/main/resources/error/error-classes.json:
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@@ -469,6 +469,11 @@
"Grouping sets size cannot be greater than <maxSize>"
]
},
+ "GROUP_BY_AGGREGATE" : {
Review Comment:
I'm not pretty sure since `GROUP_BY_POS_REFERS_AGG_EXPR` requires `<index>`,
but it's only care if the aggregate function is used in the group by cause.
We can manually pass the missing value for `<index>`, but not sure it makes
sense or not.
WDYT, @srielau @MaxGekk ?
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