zsxwing opened a new pull request #31713:
URL: https://github.com/apache/spark/pull/31713
### What changes were proposed in this pull request?
`ResolveInsertInto.staticDeleteExpression` should use
`UnresolvedAttribute.quoted` to create the delete expression so that we will
treat the entire `attr.name` as a column name.
### Why are the changes needed?
When users use `dot` in a partition column name, queries like ```INSERT
OVERWRITE $t1 PARTITION (`a.b` = 'a') (`c.d`) VALUES('b')``` is not working.
### Does this PR introduce _any_ user-facing change?
Without this test, the above query will throw
```
[info] org.apache.spark.sql.AnalysisException: cannot resolve '`a.b`'
given input columns: [a.b, c.d];
[info] 'OverwriteByExpression RelationV2[a.b#17, c.d#18] default.tbl, ('a.b
<=> cast(a as string)), false
[info] +- Project [a.b#19, ansi_cast(col1#16 as string) AS c.d#20]
[info] +- Project [cast(a as string) AS a.b#19, col1#16]
[info] +- LocalRelation [col1#16]
```
With the fix, the query will run correctly.
### How was this patch tested?
The new added test.
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