blocks|key|296695|text|对于更新|type|unstyled|depth|inlineStyleRanges|entityRanges|data|296696|使用：|296697|UPDATE+table1+
+++SET+col1+=+othertable.col2,
+++++++col2+=+othertable.col3+
++FROM+othertable+
+WHERE+othertable.col1+=+123;|code-block|syntax|javascript|296698|对于镶件|296699|296700|INSERT+INTO+table1+(col1,+col2)+
SELECT+col1,+col2+
++FROM+othertable|296701|如果使用SELECT填充INSERT值，则不需要VALUES语法。|offset|length|style|CODE|296702|entityMap^0|0|0|0|0|0|0|O|6|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|W|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|X|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|Y|8|@]|9|@]|A|$]]|$1|K|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|L|3|M|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|N|3|O|5|6|7|11|8|@$P|12|Q|13|R|S]]|9|@]|A|$]]|$1|T|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|U|$]]

<h2>For the UPDATE</h2>

Use:

<pre><code>UPDATE table1 
 SET col1 = othertable.col2,
 col2 = othertable.col3 
 FROM othertable 
 WHERE othertable.col1 = 123;
</code></pre>

<h2>For the INSERT</h2>

Use:

<pre><code>INSERT INTO table1 (col1, col2) 
SELECT col1, col2 
 FROM othertable
</code></pre>

You don't need the <code>VALUES</code> syntax if you are using a SELECT to populate the INSERT values.

blocks|key|3021516|text|UPDATE+table1+SET+(col1,+col2)+=+(col2,+col3)+FROM+othertable+WHERE+othertable.col1+=+123;|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3021517|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>UPDATE table1 SET (col1, col2) = (col2, col3) FROM othertable WHERE othertable.col1 = 123;
</code></pre>

blocks|key|3236078|text|OMG+Ponies的答案工作得很好，但以防你需要更复杂的东西，下面是一个稍微高级一点的更新查询的例子：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3236079|UPDATE+table1+
SET+col1+=+subquery.col2,
++++col2+=+subquery.col3+
FROM+(
++++SELECT+t2.foo+as+col1,+t3.bar+as+col2,+t3.foobar+as+col3+
++++FROM+table2+t2+INNER+JOIN+table3+t3+ON+t2.id+=+t3.t2_id
++++WHERE+t2.created_at+>+'2016-01-01'
)+AS+subquery
WHERE+table1.id+=+subquery.col1;|code-block|syntax|javascript|3236080|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

OMG Ponies's answer works perfectly, but just in case you need something more complex, here is an example of a slightly more advanced update query:

<pre><code>UPDATE table1 
SET col1 = subquery.col2,
 col2 = subquery.col3 
FROM (
 SELECT t2.foo as col1, t3.bar as col2, t3.foobar as col3 
 FROM table2 t2 INNER JOIN table3 t3 ON t2.id = t3.t2_id
 WHERE t2.created_at &gt; '2016-01-01'
) AS subquery
WHERE table1.id = subquery.col1;
</code></pre>

I'm trying to do something like this in postgres:

<ul>
<li><code>UPDATE table1 SET (col1, col2) = (SELECT col2, col3 FROM othertable WHERE othertable.col1 = 123);</code></li>
<li><code>INSERT INTO table1 (col1, col2) VALUES (SELECT col1, col2 FROM othertable)</code></li>
</ul>

But point 1 is not possible even with postgres 9.0 as mentioned in the docs (<a href="http://www.postgresql.org/docs/9.0/static/sql-update.html" rel="noreferrer">http://www.postgresql.org/docs/9.0/static/sql-update.html</a>)

Also point 2 seems not working. i'm getting the following error: subquery must return only one column.

Hope somebody has a workaround for me. otherwise the queries will take a looot of time :(.

FYI: I'm trying to select different columns from several tables and store them into a temporary table, so that another application can easily fetch the prepared data.

Update or Insert (multiple rows and columns) from subquery in PostgreSQL

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正尝试在postgres中做这样的事情：UPDATE table1 SET (col1, col2) = (SELECT col2, col3 FROM othertable WHERE othertable.col1 = 123);INSERT INTO table1 (col1, col2) VALUES (SE...

问从PostgreSQL中的子查询更新或插入(多行和多列)
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