Getting the column aliases in a Visitor

Hi,

I'm trying to parse the following query through the java implementation:

WITH test_table AS (
SELECT
column_source as column_alias
FROM `table_in_catalog`
)

SELECT column_alias FROM test_table
But I'm unable to find a visitor that connects column_source with column_alias.

Is there any way to extract this?

Start by locating the Java visitor API used to parse the shown CTE query and inspect how aliases are represented. Done means establishing whether the visitor exposes a mapping between column_source and column_alias and identifying the supported extraction path.

Written by the indexing model from the issue text.