Copying a PostgreSQL database to another server is a common task, especially when setting up backups, testing environments, or migrating data. PostgreSQL offers several tools to make this process efficient, primarily using pg_dump and pg_restore or by directly piping data over a network. Method ...
[postgres@db2 ttdata]$ psql psql Type 'help' for help.testdb=# create table test_copy(id int4,name varchar(32));testdb=# \copy test_copy from /home/postgres/test_copy.txt ; #把文本数据导入到表中testdb=#\copy test_copy to /home/postgres/test_copy1.txt ; #以tab制表符隔离testdb...
copy命令可以类似地完成一些stream完成的功能,尽管copy命令与stream方式不是一个重量级。下面描述copy命令的主要用法。 1、copy命令的帮助信息 scott@SYBO2SZ> help copy COPY --- Copies data from a query to a table in the same or another database. COPY supports CHAR, DATE, LONG, NUMBER and VARCHAR2...
需要先su到有操作postgresql权限的用户,否则则需加上指定-h IP -U username 将对名为dm的database 以自定义的的方式并且忽略掉原数据库的owner进行dump。 pg_dump默认dump文件到当前user的的home目录下 pg_dump内部使用的copy命令,速度还比较快,几个G的数据20多分钟就能dump完 然后将dm.dump文件用FileZilla Clien...
[postgres@db2 ttdata]$ psql psql Type 'help' for help. testdb=# create table test_copy(id int4,name varchar(32)); testdb=# \copy test_copy from /home/postgres/test_copy.txt ; #把文本数据导入到表中testdb=#\copy test_copy to /home/postgres/test_copy1.txt ; #以tab制表符隔离 ...
[postgres@GuangFa_PG9 pgdata]$ pg_rewind --help pg_rewind resynchronizes a PostgreSQL cluster with another copy of the cluster. Usage: pg_rewind [OPTION]... Options: -D, --target-pgdata=DIRECTORY existing data directory to modify --source-pgdata=DIRECTORY source data directory to synchroni...
8 Copy indexes from one table to another 3 Copy Table from One Database to another database in the same cluster? 0 How to copy table data from one db to another? 0 Copy Table from one MySQL server to another 2 Check the time that PostgreSQL is taking to automatically create exis...
[postgres@db2 ttdata]$ psql psql Type "help" for help. testdb=# create table test_copy(id int4,name varchar(32)); testdb=# \copy test_copy from /home/postgres/test_copy.txt ; #把文本数据导入到表中testdb=#\copy test_copy to /home/postgres/test_copy1.txt ; #以 tab 制表符隔离...
[postgres@db2ttdata]$ psql psql Type 'help' for help. testdb=# create table test_copy(id int4,name varchar(32)); testdb=# \copy test_copy from /home/postgres/test_copy.txt ; #把文本数据导入到表中testdb=#\copy test_copy to /home/postgres/test_copy1.txt ; #以tab制表符隔离 ...
发现text类型中的abc和def在数据文件表示为 09616263和09646566,查看代码可知text类型其实为varlena,他的结构为: