28

我正在尝试在 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 子句似乎是正确的。如果我在 WITH 子句中单独运行查询,我会得到正确的结果。

4

2 回答 2

37

来自精美手册

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子句中指定附加表。

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;

错误消息甚至说:

错误:缺少表“停止”的 FROM 子句条目

于 2012-03-10T04:18:37.787 回答
2

如果您输入错误的表名,也会发生这种情况。例如:

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

而不是profiles我用错了profile!!这会起作用:

UPDATE profiles SET name = ( profiles.first_name ) WHERE id = 1
于 2017-11-12T15:03:26.530 回答