INSERT INTO...SELECT 对于所有 MySQL 列

发布于 2024-10-21 00:53:28 字数 300 浏览 5 评论 0原文

我正在尝试移动旧数据：

this_table >> this_table_archive

复制所有列。我已经尝试过这个，但它不起作用：

INSERT INTO this_table_archive (*) VALUES (SELECT * FROM this_table WHERE entry_date < '2011-01-01 00:00:00');

注意：这些表是相同的，并且将 id 设置为主键。

原文

I'm trying to move old data from:

this_table >> this_table_archive

copying all columns over. I've tried this, but it doesn't work:

INSERT INTO this_table_archive (*) VALUES (SELECT * FROM this_table WHERE entry_date < '2011-01-01 00:00:00');

Note: the tables are identical and have id set as a primary key.

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偏爱自由 2024-10-28 00:53:29

除了 Mark Byers 的回答：

有时您还想插入硬编码详细信息，否则可能会出现唯一约束失败等情况。因此，在覆盖某些列值的情况下，请使用以下内容。

INSERT INTO matrimony_domain_details (domain, type, logo_path)
SELECT 'www.example.com', type, logo_path
FROM matrimony_domain_details
WHERE id = 367

这里 domain 值是我以硬编码方式添加的，以摆脱唯一约束。

Addition to Mark Byers answer :

Sometimes you also want to insert Hardcoded details else there may be Unique constraint fail etc. So use following in such situation where you override some values of the columns.

INSERT INTO matrimony_domain_details (domain, type, logo_path)
SELECT 'www.example.com', type, logo_path
FROM matrimony_domain_details
WHERE id = 367

Here domain value is added by me me in Hardcoded way to get rid from Unique constraint.

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Spring初心 2024-10-28 00:53:29

你不需要 double () 作为值位吗？如果不尝试这个（尽管一定有更好的方法

insert into this_table_archive (id, field_1, field_2, field_3) 
values
((select id from this_table where entry_date < '2001-01-01'), 
((select field_1 from this_table where entry_date < '2001-01-01'), 
((select field_2 from this_table where entry_date < '2001-01-01'), 
((select field_3 from this_table where entry_date < '2001-01-01'));

don't you need double () for the values bit? if not try this (although there must be a better way

insert into this_table_archive (id, field_1, field_2, field_3) 
values
((select id from this_table where entry_date < '2001-01-01'), 
((select field_1 from this_table where entry_date < '2001-01-01'), 
((select field_2 from this_table where entry_date < '2001-01-01'), 
((select field_3 from this_table where entry_date < '2001-01-01'));

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剩一世无双 2024-10-28 00:53:28

手册中描述了正确的语法。试试这个：

INSERT INTO this_table_archive (col1, col2, ..., coln)
SELECT col1, col2, ..., coln
FROM this_table
WHERE entry_date < '2011-01-01 00:00:00';

如果 id 列是自动增量列，并且您在两个表中都已经有一些数据，那么在某些情况下您可能希望从列列表中省略 id 并生成新的 id 以避免插入已经存在的 id在原来的表中。如果您的目标表为空，那么这不会成为问题。

The correct syntax is described in the manual. Try this:

INSERT INTO this_table_archive (col1, col2, ..., coln)
SELECT col1, col2, ..., coln
FROM this_table
WHERE entry_date < '2011-01-01 00:00:00';

If the id columns is an auto-increment column and you already have some data in both tables then in some cases you may want to omit the id from the column list and generate new ids instead to avoid insert an id that already exists in the original table. If your target table is empty then this won't be an issue.

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如日中天 2024-10-28 00:53:28

对于语法，它看起来像这样（省略列列表以隐式表示“全部”）

INSERT INTO this_table_archive
SELECT *
FROM this_table
WHERE entry_date < '2011-01-01 00:00:00'

如果归档表中已有数据，则避免主键错误

INSERT INTO this_table_archive
SELECT t.*
FROM this_table t
LEFT JOIN this_table_archive a on a.id=t.id
WHERE t.entry_date < '2011-01-01 00:00:00'
  AND a.id is null  # does not yet exist in archive

For the syntax, it looks like this (leave out the column list to implicitly mean "all")

INSERT INTO this_table_archive
SELECT *
FROM this_table
WHERE entry_date < '2011-01-01 00:00:00'

For avoiding primary key errors if you already have data in the archive table

INSERT INTO this_table_archive
SELECT t.*
FROM this_table t
LEFT JOIN this_table_archive a on a.id=t.id
WHERE t.entry_date < '2011-01-01 00:00:00'
  AND a.id is null  # does not yet exist in archive

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