Zouxxyy opened a new pull request, #7334:
URL: https://github.com/apache/paimon/pull/7334
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### Purpose
Fix this
```sql
MERGE INTO target tgt
USING (
SELECT a, b
FROM source
WHERE c = 'c11'
) AS src
ON tgt.a = src.a AND tgt.b = src.b AND tgt.c = 'cc'
WHEN MATCHED THEN DELETE
```
```
Column '_left.__paimon_file_path' does not exist. Did you mean one of the
following? [_left.a, _left.b, _left.c, src.a, src.b]; line 2 pos 0;
'Project ['_left.__paimon_file_path]
+- Join Inner, (((a#56 = a#59) AND (b#57 = b#60)) AND (c#58 = cc))
:- SubqueryAlias _left
: +- Filter (c#58 = cc)
: +- SubqueryAlias tgt
: +- SubqueryAlias paimon.test.target
: +- RelationV2[a#56, b#57, c#58] test.target
+- SubqueryAlias src
+- Project [a#59, b#60]
+- Filter (c#61 = c11)
+- SubqueryAlias paimon.test.source
+- RelationV2[a#59, b#60, c#61] test.source
```
### Tests
<!-- List UT and IT cases to verify this change -->
### API and Format
<!-- Does this change affect API or storage format -->
### Documentation
<!-- Does this change introduce a new feature -->
### Generative AI tooling
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