用COPY命令从csv文件中导入数据

开始

csv 文件的内容：

id    name    departno    age

1    gao    10    30

2    jian    11    35

3    tom    11    30

导入前：

postgres=# select a.relpages, a.reltuples, a.relfilenode,a.reltype,b.typname from pg_class a, pg_type b where a.relname like 'gaotab%' and a.reltype=b.oid;

 relpages | reltuples | relfilenode | reltype | typname 

----------+-----------+-------------+---------+---------

(0 rows)



postgres=# 

导入之前，必须要建立好表的结构

postgres=# create table gaotab(id integer,name varchar(20),departno integer,age integer);

CREATE TABLE

postgres=# 

postgres=# 

postgres=# COPY gaotab from '/soft/test.csv' with csv header;COPY 3

postgres=# select * from gaotab;

 id | name | departno | age 

----+------+----------+-----

  1 | gao  |       10 |  30

  2 | jian |       11 |  35

  3 | tom  |       11 |  30

(3 rows)



postgres=# 

导入已经成功

导入后再看：

postgres=# select a.relpages, a.reltuples, a.relfilenode,a.reltype,b.typname from pg_class a, pg_type b where a.relname like 'gaotab%' and a.reltype=b.oid;

 relpages | reltuples | relfilenode | reltype | typname 

----------+-----------+-------------+---------+---------

        0 |         0 |       16384 |   16386 | gaotab

(1 row)



postgres=# 







postgres=# analyze gaotab;

ANALYZE

postgres=# select a.relpages, a.reltuples, a.relfilenode,a.reltype,b.typname from pg_class a, pg_type b where a.relname like 'gaotab%' and a.reltype=b.oid;

 relpages | reltuples | relfilenode | reltype | typname 

----------+-----------+-------------+---------+---------

        1 |         3 |       16384 |   16386 | gaotab

(1 row)



postgres=# 

[作者：技术者高健@博客园  mail: [email protected] ]

结束