#查看所有数据库 select * from pg_database; #连接指定数据库 \c postgres #查看所有表 select * from pg_tables #查看所有视图 select count(*) from pg_views; #查看所有模式 schema \dn #查看表结构 \dt t1 #查看当前连接信息 \conninfo #查看所有参数 show all; #查看具体的参数 (类似oracle的redo...
grant select+ owner test=# create user test with password '123456';CREATE ROLEtest=# \cYou are now connected to database "test" as user "postgres".test=# grant SELECT on ALL tables in schema mytest to test;GRANTtest=# set search_path to mytest ;SETtest=# alter schema mytest owner ...
问使用Postgresql授予对所有数据库及其表的访问权限EN好久不用mysql了，今天拾起来，新建用户，用Navicat...
SELECT tablespace FROM pg_tables WHERE tablename ='t1'AND schemaname ='schema1';
select*frompg_namespace 结果:存在模式 schema2023 的信息,其 oid 的字面值为222485。ben发布于博客园 select*frompg_tablespace 结果: 1、数据表本身的信息 pg_tables 中查询:ben发布于博客园 select*frompg_tableswhereschemaname='schema2023'andtablename='some_info' ...
REINDEX { DATABASE | TABLE | INDEX } name [ FORCE ]RELEASE SAVEPOINT删除一个前面定义的保存点。RELEASE [ SAVEPOINT ] savepoint_nameRESET把一个运行时参数值恢复为默认值。RESET name RESET ALLREVOKE删除访问权限。REVOKE [ GRANT OPTION FOR ] { { SELECT | INSERT | UPDATE | DELETE | RULE | ...
例: select * from postgtest order by title desc limit 3 offset 4 ; 排序后从第4条开始取3条 统计抽出数据 distinct,sum,max/min,group by /having 安装并配置,并设置远程登陆的用户名和密码 1 .安装postgreSQL sudo apt-get update主程序:sudo apt-get install postgresql数据库图形界面:sudo apt install...
GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO username; 三、数据库表或者索引 1、获取数据库表中的索引 select * from pg_indexes where tablename = 'product'; 2、获取当前db中所有表信息 select * from pg_tables; 3、查询数据库安装了哪些扩展 ...
select * from info where id between 2 and 4; select * from info where name = '轩小陌' and age = 19; select * from info where name = 'alex' or age = 49; select * from info where (name = '李杰' or email="pyyu@live.com") and age=49; ...
base 目录一个文件对应一个数据库,个人实验的映射如下: 1:template1 14485:template0 14486:postgres 数据库和堆表的OIDs分别存储在pg_database和pg_class中,可以利用下面的SQL语句查询OIDs。 数据库的OIDs select * from pg_database; postgres=# select * from pg_database; oid | datname | datdba | enc...