geruh commented on code in PR #1689:
URL: https://github.com/apache/iceberg-python/pull/1689#discussion_r1964388377
##########
pyiceberg/expressions/parser.py:
##########
@@ -90,13 +89,7 @@
@column.set_parse_action
def _(result: ParseResults) -> Reference:
if len(result.column) > 1:
- deprecation_message(
- deprecated_in="0.8.0",
- removed_in="0.9.0",
- help_message="Parsing expressions with table name is deprecated.
Only provide field names in the row_filter.",
- )
- # TODO: Once this is removed, we will no longer take just the last index
of parsed column result
- # And introduce support for parsing filter expressions with nested fields.
+ raise ValueError(f"Cannot parse expressions with table names or nested
fields, got: {".".join(result.column)}")
return Reference(result.column[-1])
Review Comment:
Alright, I made the changes to include the joining logic for the column
references. As long as there's parity between a bound schema and the
expression, I don’t see any issues.
One thing I noticed is that if we have a nested field with a dot, like
`foo.bar,` and a field nested inside it as `baz`, it's treated as
`foo.bar.baz`, and the expression respects that.
Additionally, it's worth noting that the parser currently doesn’t allow a
quoted identifier to represent a single field containing a dot, such as
`"foo.bar".baz`.
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