Question

我有一个aws postgres rds，在这个数据库下有两个数据库，因此我想将一个数据库表数据导入到另一个数据库表中，这意味着表到表的数据传输，但是在导入表时会遇到诸如约束和fkey错误的错误数据从一个表到另一个表。我听说过一些XML数据文件解决方案，可以将其从一个表导出和导入到另一个表，但是不确定该选项。可以建议是否有人对aws postgres rd做过类似的事情。尝试使用以下选项在AWS postgres RDS下将一个数据库表从一个数据库表转储并还原到另一数据库表，但出错。

pg_dump -h <dns name> -U <user name> -p 5432 -t <table name> -d <db a> -f bkp.sql -v
psql -h <dns name> -U <user name> -p 5432 --table <table name> -d <db b>-f bkp.xml -verbose

面对下面的错误

SET
SET
SET
SET
SET
set_config 
------------
(1 row)
SET
SET
SET
SET
SET
SET
psql:bkpq.bkp:42: ERROR:  relation "testtable" already exists
ALTER TABLE
COMMENT
COMMENT
COMMENT
COMMENT
COMMENT
COMMENT
COMMENT
COMMENT
COMMENT
COMMENT
COMMENT
COMMENT
COMMENT
COMMENT
psql:bkpq.bkp:154: ERROR:  relation "testtable _id_seq" already exists
ALTER TABLE
ALTER SEQUENCE
ALTER TABLE
psql:bkpq.bkp:253: ERROR:  duplicate key value violates unique constraint "testtable _pkey"
DETAIL:  Key (id)=(84) already exists.
CONTEXT:  COPY testtable, line 1
 setval 
--------
    129
(1 row)
psql:bkpq.bkp:268: ERROR:  multiple primary keys for table "testtable " are not allowed
psql:bkpq.bkp:276: ERROR:  relation "testtable _unique_name" already exists
psql:bkpq.bkp:283: ERROR:  relation "testtable_process_platform_process_id_index" already exists
psql:bkpq.bkp:290: ERROR:  relation "testtable _process_platform_process_type_id_index" already exists
psql:bkpq.bkp:298: ERROR:  constraint "testtable _process_create_uid_fkey" for relation "" already exists
psql:bkpq.bkp:306: ERROR:  constraint "testtable _process_partner_process_model_id_fkey" for relation "testtable" already exists
psql:bkpq.bkp:314: ERROR:  constraint "testtable _process_product_template_process_model_id_fkey" for relation "testtable" already exists
psql:bkpq.bkp:322: ERROR:  constraint "testtable _process_quote_item_wizard_process_config_model_id_fkey" for relation "testtable" already exists
psql:bkpq.bkp:330: ERROR:  constraint " testtable_process_type_id_fkey" for relation "testtable" already exists
psql:bkpq.bkp:338: ERROR:  constraint "testtable _process_write_uid_fkey" for relation "testtable " already exists
GRANT
GRANT
GRANT

Answer 1

如果顺序有问题，可以尝试manually setting the next value

进行修复

在AWS Postgres RDS中将表复制到表数据从一个数据库复制到另一个数据库

1 个答案: