Ambiguous column present in multiple tables

[erizocosmico]

    SELECT repository_id, SUM(ARRAY_LENGTH(SPLIT(blob_content, '\n'))) AS n_loc
    FROM refs
    NATURAL JOIN commits
    NATURAL JOIN commit_files
    NATURAL JOIN files
    WHERE ref_name = 'HEAD'
          AND NOT IS_BINARY(blob_content)
          AND file_path NOT LIKE 'vendor/%%'
    GROUP BY repository_id
  LIMIT 1;

Query Failed - unknown error: ambiguous column name "repository_id", it's present in all these tables: refs, files

(not the exact error for this query, but the same kind of error)

[erizocosmico]

This will be fixed once this PR is merged and go-mysql-server version is updated here.

[erizocosmico]

Waiting for src-d/go-mysql-server#708 to be merged before updating