kosiew commented on code in PR #1247:
URL:
https://github.com/apache/datafusion-python/pull/1247#discussion_r2370814411
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docs/source/user-guide/dataframe/index.rst:
##########
@@ -228,6 +228,33 @@ Core Classes
* :py:meth:`~datafusion.SessionContext.from_pandas` - Create from Pandas
DataFrame
* :py:meth:`~datafusion.SessionContext.from_arrow` - Create from Arrow data
+ ``SessionContext`` can automatically resolve SQL table names that match
+ in-scope Python data objects. When automatic lookup is enabled, a query
+ such as ``ctx.sql("SELECT * FROM pdf")`` will register a pandas or
Review Comment:
Registrations persist: once a variable is bound we cache a weak reference
plus its id in _python_table_bindings. On every subsequent SQL call we refresh
that cache—dropping the registration if the object has been garbage collected,
reassigned, or otherwise moved—but as long as the original object is still
alive the table name remains usable across queries.
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