Question

我正在尝试将Postgres表中的/镜像数据反映到MySQL表中。我发现mysql_fwd并在连接到localhost之后，我无法将数据输入到postgres FOREIGN TABLE中。也没有输入MySQL的数据显示在postgres中（向后测试）？来自MySQL的数据没有反映在postgres中，如果我测试另一种方式（正确的方向）post_sync =＃INSERT INTO mysql_sync（user_name，user_id）VALUES（'Joe'，3）;错误：无法更改外表“mysql_sync”

的的 ** * ** * ** * 的** 构建流程 * ** * ** * ** * * * * *

CREATE SERVER mysql_svr
FOREIGN DATA WRAPPER mysql_fdw
OPTIONS (address '127.0.0.1', port '3306');


CREATE FOREIGN TABLE mysql_sync (id float4, user_name text, user_id integer)
SERVER mysql_svr OPTIONS ( database 'postgres_link', query 'SELECT * FROM mysql_sync');


CREATE USER MAPPING FOR mysqlLink SERVER mysql_svr OPTIONS (username 'some_dude', pass '');

的的 ** * ** * ** * 的** * ** * ** 结构 * ** * ** * ** * **

Foreign table "public.mysql_sync"
Column | Type | Modifiers | FDW Options | Storage | Stats target | Description
-----------+---------+-----------+-------------+----------+--------------+-------------
id | real | | | plain | |
user_name | text | | | extended | |
user_id | integer | | | plain | |
Server: mysql_svr
FDW Options: (database 'postgres_link', query 'SELECT * FROM mysql_sync')
Has OIDs: no

的的 ** * ** * ** * 的** * ** * ** * ** mySQL结构 的 ** * ** * ** * ** * *

mysql> desc mysql_sync;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id:    92
Current database: postgres_link

+-----------+-------------+------+-----+---------+----------------+
| Field     | Type        | Null | Key | Default | Extra          |
+-----------+-------------+------+-----+---------+----------------+
| id        | int(11)     | NO   | PRI | NULL    | auto_increment |
| user_name | varchar(25) | NO   |     | NULL    |                |
| user_id   | varchar(10) | NO   |     | NULL    |                |
+-----------+-------------+------+-----+---------+----------------+
3 rows in set (0.00 sec)

Answer 1

要转换的一大堆不同方法，这里 - ＆gt; http://wiki.postgresql.org/wiki/Converting_from_other_Databases_to_PostgreSQL

将postgres表与mysql表链接在测试时失败

1 个答案: