regression: table "" does not have column "MAX(commits.commit_author_when)"

[smacker]

Query:

SELECT q1.repository_id, when_max, lines,
CASE WHEN when_max < DATE_SUB(NOW(), INTERVAL 3 MONTH) THEN 'unmaintained' ELSE 'maintained' END
FROM (
    SELECT rc.repository_id, MAX(c.commit_author_when) AS when_max
    FROM ref_commits rc
    NATURAL JOIN commits c
    WHERE rc.ref_name = 'HEAD'
    GROUP BY rc.repository_id
) q1 JOIN (
    SELECT rf.repository_id, SUM(ARRAY_LENGTH(SPLIT(f.blob_content, '\n'))-1) as lines
    FROM refs rf
    NATURAL JOIN commits c
    NATURAL JOIN commit_files cf
    NATURAL JOIN files f
    WHERE rf.ref_name = 'HEAD'
    AND f.file_path NOT REGEXP '^vendor.*'
    AND NOT IS_BINARY(f.blob_content)
    GROUP BY rf.repository_id
) q2 ON q1.repository_id = q2.repository_id

returns

unknown error: table "" does not have column "MAX(commits.commit_author_when)"

but it was working on v0.20-rc1.

[erizocosmico]

Will be fixed once src-d/go-mysql-server#739 is merged