小编Ado*_*obe的帖子

在 PostgreSQL 中，我可以使用SELECT INTOSELECT将结果保存到另一个表：

SELECT id INTO new_record_ids FROM new_table
  EXCEPT
    SELECT id FROM old_table
ORDER BY id;

然而，这不适用于连接：

-- doesn't work:
SELECT * INTO new_records FROM new_table
  JOIN new_record_ids ON new_record_ids.id = new_table.id
ORDER BY new_table.id;

连接本身是正确的：

-- works:
SELECT * FROM new_table
  JOIN new_record_ids ON new_record_ids.id = new_table.id
ORDER BY new_table.id;

我的问题是：如何将联合表保存到另一个表？

这是我所拥有的：

=# SELECT * FROM users;\n id |     name      \n----+---------------\n  1 | Paul Gilbert\n  2 | Bob Dylan\n  3 | Cliff Downing\n\n=# SELECT * FROM regs;\n reg_id | user_id \n--------+---------\n      1 |       1\n     11 |       1\n    111 |       1\n      2 |       2\n     22 |       2\n      3 |       3\n

这是我想要获得的：

=# SELECT * FROM joined;\n id |     name      |       regs\n----+---------------+-------------------\n  1 | Paul Gilbert  | {1, 11, 111}\n  2 | Bob Dylan     | {2, 22}\n  3 | Cliff …