使用WITH子句查询Postgres“缺少FROM子句条目”错误

时间:2012-03-10 04:10:16

标签: sql postgresql with-clause

我试图在Postgres 9.1.3中使用此查询:

WITH stops AS (
    SELECT citation_id,
           rank() OVER (ORDER BY offense_timestamp,
                     defendant_dl,
                     offense_street_number,
                     offense_street_name) AS stop
    FROM   consistent.master
    WHERE  citing_jurisdiction=1
)

UPDATE consistent.master
SET arrest_id = stops.stop
WHERE citing_jurisdiction=1
  AND stops.citation_id = consistent.master.citation_id;

我收到此错误:

ERROR:  missing FROM-clause entry for table "stops"
LINE 12: SET arrest_id = stops.stop
                         ^

********** Error **********

ERROR: missing FROM-clause entry for table "stops"
SQL state: 42P01
Character: 280

我真的很困惑。根据Postgres文档,WITH子句显示正确。如果我在WITH子句中单独运行查询,我会得到正确的结果。

2 个答案:

答案 0 :(得分:28)

来自fine manual

  

使用数据库中其他表中包含的信息修改表有两种方法:使用子选择,或在FROM子句中指定其他表。

所以你只需要一个FROM子句:

WITH stops AS (
    -- ...
)
UPDATE consistent.master
SET arrest_id = stops.stop
FROM stops -- <----------------------------- You missed this
WHERE citing_jurisdiction=1
  AND stops.citation_id = consistent.master.citation_id;

错误信息甚至说得很多:

  

错误:缺少表“停止”的FROM子句条目

答案 1 :(得分:1)

如果您输错了表名,也会发生这种情况。例如:

UPDATE profiles SET name = ( profile.first_name ) WHERE id = 1

而不是profiles我错误地使用了profile !!这可行:

UPDATE profiles SET name = ( profiles.first_name ) WHERE id = 1