参考官网地址：

https://www.postgresql.org/download/linux/redhat/

之后更改postgresql.conf

#vim /var/lib/pgsql/9.6/data/postgresql.conf  
listen_address = '*' 
port = 5432  

更改pg_hba.conf

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     peer
# IPv4 local connections:
host    all             all             127.0.0.1/32            ident
host    all             all             0.0.0.0/0               md5

# IPv6 local connections:
host    all             all             ::1/128                 ident
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local   replication     postgres                                peer
#host    replication     postgres        127.0.0.1/32            ident
#host    replication     postgres        ::1/128                 ident
local   replication     postgres                                trust
host    replication     postgres        127.0.0.1/32            trust
host    replication     postgres        ::1/128                 trust

之后发现如下, 连不上

psql -U postgres -h xxxx

原因是没有设置postgres的密码，于是

#psql
postgres=# ALTER USER postgres WITH PASSWORD 'postgres';
ALTER ROLE

重启服务搞定

---

Postgresql 常用数据类型总结：

https://www.cnblogs.com/stephen-liu74/archive/2012/04/30/2293602.html

---

新建一个数据库：

postgres=# CREATE DATABASE real_estate_trans
postgres-# ;

新建一个schema：

CREATE SCHEMA IF NOT EXISTS hangzhou;

创建一张表：

CREATE TABLE hangzhou.trans_daily_info (  
    trans_date DATE NOT NULL,  
    downtown_new_trans SMALLINT NOT NULL,
    downtown_new_vol INTEGER NOT NULL,
    xiaoshan_new_trans SMALLINT NOT NULL,
    xiaoshan_new_vol INTEGER NOT NULL,
    yuhang_new_trans SMALLINT NOT NULL,
    yuhang_new_vol INTEGER NOT NULL,
    fuyang_new_trans SMALLINT NOT NULL,
    fuyang_new_vol INTEGER NOT NULL,
    djd_new_trans SMALLINT NOT NULL,
    djd_new_vol INTEGER NOT NULL,
    urban_new_daily_trans SMALLINT NOT NULL,
    urban_new_daily_vol INTEGER NOT NULL,
    other4county_new_qty SMALLINT NOT NULL,
    other4country_new_vol INTEGER NOT NULL,
    downtown_old_qty SMALLINT NOT NULL,
    PRIMARY KEY (trans_date)  
);