openGauss每日一练 | 6.1 学习openGauss创建模式、修改模式属性和删除模式

课后作业

1.创建一个名为tpcds的模式

omm=# create schema tpcds;
CREATE SCHEMA
omm=# \dn+ tpcds
                 List of schemas
 Name  | Owner | Access privileges | Description 
-------+-------+-------------------+-------------
 tpcds | omm   |                   | 
(1 row)

2.创建一个用户tim, 并将tpcds的owner修改为tim，且修改owner前后分别使用\dn+查看模式信息

omm=# create user tim identified by 'tim_1234';
NOTICE:  The encrypted password contains MD5 ciphertext, which is not secure.
CREATE ROLE
omm=# alter schema tpcds owner to tim;
ALTER SCHEMA
omm=# \dn+ tpcds;
                 List of schemas
 Name  | Owner | Access privileges | Description 
-------+-------+-------------------+-------------
 tpcds | tim   |                   | 
(1 row)

3.重命名tpcds为tpcds1

omm=# alter schema tpcds rename to tpcds1;
ALTER SCHEMA
alter schema tpcds rename to tpcds1;
omm=# \dn+ tpcds1;
                 List of schemas
  Name  | Owner | Access privileges | Description 
--------+-------+-------------------+-------------
 tpcds1 | tim   |                   | 
(1 row)

4.在模式tpcds1中建表customer、插入记录和查询记录

omm=# create table tpcds1.customer(id int, name varchar(30));
CREATE TABLE
omm=# insert into tpcds1.customer values(1, 'zhou'), (2, 'wei');
INSERT 0 2
omm=# select * from tpcds1.customer;
 id | name 
----+------
  1 | zhou
  2 | wei
(2 rows)

5.删除模式tpcds1

omm=# drop schema tpcds1 cascade;
NOTICE:  drop cascades to table tpcds1.customer
DROP SCHEMA

openGauss SQL学习参考资料