学习目标
学习openGauss导出数据
课程学习
连接数据库
#第一次进入等待15秒
#数据库启动中…
su - omm
gsql -r
1.准备数据
–数据存放在backup数据库中
omm=# create database backup;
CREATE DATABASE
omm=# \c backup
Non-SSL connection (SSL connection is recommended when requiring high-security)
You are now connected to database "backup" as user "omm".
backup=# CREATE SCHEMA ds;
CREATE SCHEMA
backup=# create table ds.t1(id int, name char(30));
CREATE TABLE
backup=# insert into ds.t1 values(1 ,'xxxx');
INSERT 0 1
backup=# backup-# CREATE TABLE customer_t
( c_customer_sk integer,
backup(# c_customer_id char(5),
backup(# c_first_name char(6),
backup(# c_last_name char(8)
backup(# ) ;
CREATE TABLE
backup=# INSERT INTO customer_t VALUES
backup-# backup-# (6885, 1, 'Joes', 'Hunter'),
(4321, 2, 'Lily','Carter'),
backup-# (9527, 3, 'James', 'Cook'),
backup-# (9500, 4, 'Lucy', 'Baker');
INSERT 0 4
–退出数据库连接
\q
2.导出数据库
–以sql文本格式导出backup数据库全量信息
omm@modb:~$ gs_dump -f /home/omm/backup_database_all.sql backup -F p
gs_dump[port='5432'][backup][2021-12-14 10:00:01]: The total objects number is 391.
gs_dump[port='5432'][backup][2021-12-14 10:00:01]: [100.00%] 391 objects have been dumped.
gs_dump[port='5432'][backup][2021-12-14 10:00:01]: dump database backup successfully
gs_dump[port='5432'][backup][2021-12-14 10:00:01]: total time: 107 ms
–以sql文本格式导出backup数据库中的数据，不包含数据库对象定义
omm@modb:~$ gs_dump -f /home/omm/backup_database_data.sql backup -a -F p
gs_dump[port='5432'][backup][2021-12-14 10:01:00]: dump database backup successfully
gs_dump[port='5432'][backup][2021-12-14 10:01:00]: total time: 82 ms
–以sql文本格式导出backup数据库中对象的定义
omm@modb:~$ gs_dump -f /home/omm/backup_database_define.sql backup -s -F p
gs_dump[port='5432'][backup][2021-12-14 10:01:41]: The total objects number is 389.
gs_dump[port='5432'][backup][2021-12-14 10:01:41]: [100.00%] 389 objects have been dumped.
gs_dump[port='5432'][backup][2021-12-14 10:01:41]: dump database backup successfully
gs_dump[port='5432'][backup][2021-12-14 10:01:41]: total time: 190 ms
–查看导出的数据
more /home/omm/backup_database_all.sql
omm@modb:~$ more /home/omm/backup_database_all.sql
--
-- PostgreSQL database dump
--
SET statement_timeout = 0;
SET xmloption = content;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SET check_function_bodies = false;
SET client_min_messages = warning;
--
-- Name: ds; Type: SCHEMA; Schema: -; Owner: omm
--
CREATE SCHEMA ds;
ALTER SCHEMA ds OWNER TO omm;
SET search_path = ds;
SET default_tablespace = '';
SET default_with_oids = false;
--
-- Name: t1; Type: TABLE; Schema: ds; Owner: omm; Tablespace:
--
CREATE TABLE t1 (
id integer,
name character(30)
)
WITH (orientation=row, compression=no);
ALTER TABLE ds.t1 OWNER TO omm;
SET search_path = public;
--
-- Name: customer_t; Type: TABLE; Schema: public; Owner: omm; Tablespace:
--
CREATE TABLE customer_t (
c_customer_sk integer,
c_customer_id character(5),
c_first_name character(6),
c_last_name character(8)
)
WITH (orientation=row, compression=no);
ALTER TABLE public.customer_t OWNER TO omm;
SET search_path = ds;
--
-- Data for Name: t1; Type: TABLE DATA; Schema: ds; Owner: omm
--
COPY t1 (id, name) FROM stdin;
1 xxxx
\.
;
SET search_path = public;
--
-- Data for Name: customer_t; Type: TABLE DATA; Schema: public; Owner: omm
--
COPY customer_t (c_customer_sk, c_customer_id, c_first_name, c_last_name) FROM stdin;
6885 1 Joes Hunter
4321 2 Lily Carter
9527 3 James Cook
9500 4 Lucy Baker
\.
;
--
-- Name: public; Type: ACL; Schema: -; Owner: omm
--
REVOKE ALL ON SCHEMA public FROM PUBLIC;
REVOKE ALL ON SCHEMA public FROM omm;
GRANT CREATE,USAGE ON SCHEMA public TO omm;
GRANT USAGE ON SCHEMA public TO PUBLIC;
--
-- PostgreSQL database dump complete
--
3.导出模式
–以sql文本格式导出backup数据库中ds模式的全量信息
omm@modb:~$ gs_dump -f /home/omm/backup_schema_all.sql backup -n ds -F p
gs_dump[port='5432'][backup][2021-12-14 10:03:29]: The total objects number is 380.
gs_dump[port='5432'][backup][2021-12-14 10:03:29]: [100.00%] 380 objects have been dumped.
gs_dump[port='5432'][backup][2021-12-14 10:03:29]: dump database backup successfully
gs_dump[port='5432'][backup][2021-12-14 10:03:29]: total time: 89 ms
–以sql文本格式导出backup数据库中ds模式的数据
omm@modb:~$ gs_dump -f /home/omm/backup_schema_data.sql backup -n ds -a -F p
gs_dump[port='5432'][backup][2021-12-14 10:04:11]: dump database backup successfully
gs_dump[port='5432'][backup][2021-12-14 10:04:11]: total time: 79 ms
–以sql文本格式导出backup数据库中ds模式的定义
omm@modb:~$ gs_dump -f /home/omm/backup_schema_define.sql backup -n ds -s -F p
gs_dump[port='5432'][backup][2021-12-14 10:04:43]: The total objects number is 379.
gs_dump[port='5432'][backup][2021-12-14 10:04:43]: [100.00%] 379 objects have been dumped.
gs_dump[port='5432'][backup][2021-12-14 10:04:43]: dump database backup successfully
gs_dump[port='5432'][backup][2021-12-14 10:04:43]: total time: 184 ms
–查看导出的数据
omm@modb:~$ more /home/omm/backup_schema_all.sql
--
-- PostgreSQL database dump
--
SET statement_timeout = 0;
SET xmloption = content;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SET check_function_bodies = false;
SET client_min_messages = warning;
--
-- Name: ds; Type: SCHEMA; Schema: -; Owner: omm
--
ALTER SCHEMA ds OWNER TO omm;
SET search_path = ds;
SET default_tablespace = '';
CREATE SCHEMA ds;
4.导出表
–以sql文本格式导出backup数据库中表customer_t的全量信息
omm@modb:~$ gs_dump -f /home/omm/backup_table_all.sql backup -t customer_t -F p
gs_dump[port='5432'][backup][2021-12-14 10:05:41]: The total objects number is 379.
gs_dump[port='5432'][backup][2021-12-14 10:05:41]: [100.00%] 379 objects have been dumped.
gs_dump[port='5432'][backup][2021-12-14 10:05:41]: dump database backup successfully
gs_dump[port='5432'][backup][2021-12-14 10:05:41]: total time: 73 ms
–以sql文本格式导出backup数据库中表customer_t的数据
omm@modb:~$ gs_dump -f /home/omm/backup_table_data.sql backup -t customer_t -a -F p
gs_dump[port='5432'][backup][2021-12-14 10:09:22]: dump database backup successfully
gs_dump[port='5432'][backup][2021-12-14 10:09:22]: total time: 66 ms
–以sql文本格式导出backup数据库中表customer_t的定义
omm@modb:~$ gs_dump -f /home/omm/backup_table_define.sql backup -t customer_t -s -F p
gs_dump[port='5432'][backup][2021-12-14 10:10:08]: The total objects number is 378.
gs_dump[port='5432'][backup][2021-12-14 10:10:08]: [100.00%] 378 objects have been dumped.
gs_dump[port='5432'][backup][2021-12-14 10:10:08]: dump database backup successfully
gs_dump[port='5432'][backup][2021-12-14 10:10:08]: total time: 169 ms
–查看导出的数据
more /home/omm/backup_table_all.sql
课程作业
1.创建数据库tpcc，在数据库tpcc中创建模式schema1，在模式schema1中建表products
omm=# create database tpcc;
CREATE DATABASE
omm=# \c tpcc
Non-SSL connection (SSL connection is recommended when requiring high-security)
You are now connected to database "tpcc" as user "omm".
tpcc=# create schema schema1;
CREATE SCHEMA
tpcc=# create table schema1.products(id int,name char(10));
CREATE TABLE
tpcc=# insert into schema1.products values (1,'2223'),(2,'port');
INSERT 0 2
tpcc=# \q
2.使用gs_dump工具以文本格式导出数据库tpcc的全量数据
omm@modb:~$ gs_dump -f /home/omm/tpcc.sql tpcc -F p
gs_dump[port='5432'][tpcc][2021-12-14 10:15:06]: The total objects number is 389.
gs_dump[port='5432'][tpcc][2021-12-14 10:15:06]: [100.00%] 389 objects have been dumped.
gs_dump[port='5432'][tpcc][2021-12-14 10:15:06]: dump database tpcc successfully
gs_dump[port='5432'][tpcc][2021-12-14 10:15:06]: total time: 98 ms
3.使用gs_dump工具以文本格式导出模式schema1的定义
omm@modb:~$ gs_dump -f /home/omm/tpcc.sql tpcc -F p -s
gs_dump[port='5432'][tpcc][2021-12-14 10:15:53]: The total objects number is 388.
gs_dump[port='5432'][tpcc][2021-12-14 10:15:53]: [100.00%] 388 objects have been dumped.
gs_dump[port='5432'][tpcc][2021-12-14 10:15:53]: dump database tpcc successfully
gs_dump[port='5432'][tpcc][2021-12-14 10:15:53]: total time: 188 ms
4.使用gs_dump工具以文本格式导出数据库tpcc的数据，不包含定义
omm@modb:~$ gs_dump -f /home/omm/tpcc.sql tpcc -F p -a
gs_dump[port='5432'][tpcc][2021-12-14 10:16:49]: dump database tpcc successfully
gs_dump[port='5432'][tpcc][2021-12-14 10:16:49]: total time: 79 ms
5.删除表、模式和数据库
omm@modb:~$ gsql -d tpcc -c "drop table schema1.products;"
DROP TABLE
omm@modb:~$ gsql -d tpcc -c "drop schema schema1;"
DROP SCHEMA
omm@modb:~$ gsql -c "drop database tpcc;"
DROP DATABASE
omm@modb:~$ gsql -d backup -c "drop schema ds cascade;"
NOTICE: drop cascades to table ds.t1
DROP SCHEMA
omm@modb:~$ gsql -c "drop database backup;"
DROP DATABASE
omm@modb:~$ gsql -r
gsql ((openGauss 2.0.0 build 78689da9) compiled at 2021-03-31 21:03:52 commit 0 last mr )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.
omm=# \l
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
-----------+-------+----------+-------------+-------------+-------------------
omm | omm | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
postgres | omm | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
template0 | omm | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/omm +
| | | | | omm=CTc/omm
template1 | omm | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/omm +
| | | | | omm=CTc/omm
(4 rows)
omm=# \q
数据库tpcc ,backup已删除
最后修改时间：2021-12-14 18:15:53
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