‘123456’; \q su root 7、设置远程控制 7.1...all peer local all all md5 # IPv4 local connections: ### 假如Kong用户设置了密码,需要配置MD5认证 host all all 127.0.0.1.../32 md5 ### 容许远程向Navicat客户端访问 host all all 0.0.0.0/0 md5 #
gender | character varying(1) | | |'M'::character varying# 修改列alter table gxl.test2 alter gendertypevarchar(10); alter table gxl.test2 drop column gender;# 删除表drop table gxl.test2; 3.表的约束 一种限制条件,比如说主键必须是唯一的,当出现重复的主键的时候会报错。 主键 唯一键 外键 检...
ALTER TABLE table_name DROP COLUMN column_name; 其中,table_name是要删除列的表的名称,column_name是要删除的列的名称。 注意:在删除列之前,请确保已经备份了数据库,以防止意外删除数据导致的数据丢失。 优势 可以从表中删除不需要的列,使表结构更加简洁。 可以减少存储空间的使用,提高数据库性能。 可以避免敏...
的owner有 drop该schema下面的所有对象的权限。或者直接drop schema cascade来删除整个schema. test=#createrole r1 login;CREATEROLE test=#createrole r2 login;CREATEROLE test=#grantallondatabase testtor1;GRANTtest=#grantallondatabase testtor2;GRANTtest=# \c test r1 Youarenow connectedtodatabase "tes...
drop table tbl; create table tbl (id text, info text, crt_time timestamp); do language plpgsql $$ declare parts int := 4; begin for i in 0..parts-1 loop execute format('create table tbl%s (like tbl including all) inherits (tbl)', i); ...
# IPv6 local connections: host all all ::1/128 scram-sha-256 # Allow replication connections from localhost, by a user with the # replication privilege. local replication all peer host replication all 127.0.0.1/32 scram-sha-256 host replication all ::1/128 scram-sha-256 ...
While setting up the Postgres source connector, from the SSH tunnel dropdown, select: SSH Key Authentication to use a private as your secret for establishing the SSH tunnel Password Authentication to use a password as your secret for establishing the SSH Tunnel For SSH Tunnel Jump Server Host...
type: type: ALL_PERMITTED props: # max-connections-size-per-query: 1 # kernel-executor-size: 16 # Infinite by default. # proxy-frontend-flush-threshold: 128 # The default value is 128. # proxy-hint-enabled: false sql-show: on
max_connections = 100 unix_socket_directories = '.' shared_buffers = 8GB maintenance_work_mem = 512MB dynamic_shared_memory_type = posix bgwriter_delay = 10ms bgwriter_lru_maxpages = 1000 bgwriter_lru_multiplier = 10.0 wal_level = hot_standby ...
done in 77.33 s (drop tables 0.02 s, create tables 0.02 s, client-side generate 48.19 s, vacuum 2.70 s, primary keys 26.40 s). 我们已经在这里看到Postgres 14在初始数据加载方面做得更好。 现在,我们启动具有不同活动连接集的只读pgbench,以非常活跃的工作负载为例显示5,000个并发连接: ...