PostgreSQL：HAVING语句会跳过为空或为空的行？

Question

有什么方法可以跳过为空或为空的行？我可以使用一些帮助来排序子表的输出。我的having语句返回了我无法解决的错误。

它返回错误：ERROR: invalid input syntax for integer: " "

这似乎是因为表中的某些行将具有null值或为空，并且haveing语句正挂在那里。

这是完整的查询

SELECT
    count(job),
    year,
    zipcode
FROM
(
    SELECT
        substring (cast(dobjobs.prefilingdate AS varchar), '^\d\d\d\d') AS year,
        dobjobs.job,
        dobjobs.bbl,
        pluto_17v1.zipcode
   FROM
        dobjobs
        JOIN pluto_17v1 ON dobjobs.bbl = pluto_17v1.bbl
   GROUP BY
        dobjobs.prefilingdate,
        dobjobs.bbl,
        pluto_17v1.zipcode,
        dobjobs.job
   ORDER BY
        year
) AS sub
GROUP BY
    year, zipcode
HAVING
    CAST( zipcode AS int ) IN (10039, 10039, 10026, 10030, 10037, 10027, 10032, 10033, 10040, 10034, 10031)
ORDER BY
    year;