adragomir opened a new issue, #15118:
URL: https://github.com/apache/datafusion/issues/15118
### Describe the bug
with SQLParser 0.53, this works:
```
SELECT *
FROM
(meta_asset_featurization AS asset_meta
INNER JOIN meta_asset_summary_metrics AS asset_metrics ON (
asset_meta.struct_field['substruct']['substruct'] =
asset_metrics.struct_field['substruct']['substruct']
))
```
with SQLParser 0.54, this no longer works, the newly added
`sql_compound_field_access_to_expr` interprets the `root` (in this case for
example `asset_meta`) as a column name instead of a table.
The solution (workaround) for SQLParser 0.54 is to do
```
SELECT *
FROM
(meta_asset_featurization AS asset_meta
INNER JOIN meta_asset_summary_metrics AS asset_metrics ON (
asset_meta.struct_field.substruct.substruct =
asset_metrics.struct_field.substruct.substruct
))
```
Is this intended ? I have tried to see the history, but unsure which
behavior is correct. Since we do interpret the `[]` index access in the case of
NOT having to specify the table correctly (so, if I have a single table and I
specify directly the column `col['substruct']['substruct']` it works), why
wouldn't this case work ?
### To Reproduce
_No response_
### Expected behavior
Structure field access with either dot acess `.subfield` or subscript
access`['subfield']` should work in the same way and yield the same result in
all conditions
### Additional context
_No response_
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