在上篇文章给大家介绍了如何将postgresql数据库表内数据导出为excel格式(推荐) 感兴趣的朋友点击查看。

本文主要用于介绍如何使用copy或者\copy命令将postgresql数据库内表的数据导出为excel格式，方便用户查看编辑。

copy命令同\copy命令语法上相同，区别在于copy必须使用能够超级用户使用,copy … to file 中的文件都是数据库服务器所在的服务器上的文件，而\copy 一般用户即可执行且\copy 保存或者读取的文件是在客户端所在的服务器。本文主要以copy命令作为介绍重点，使用copy命令将表内数据倒为csv格式文件即为excel格式。
1、copy命令语法

COPY { 表名 [ ( 列名称 [, ...] ) ] | ( 查询 ) } TO { '文件名' | PROGRAM '命令' | STDOUT } [ [ WITH ] ( 选项 [, ...] ) ]选项可以是下列内容之一 FORMAT 格式_名称 FREEZE [ 布尔 ] DELIMITER '分隔字符' NULL '空字符串' HEADER [ 布尔 ] QUOTE '引用字符' ESCAPE '转义字符' FORCE_QUOTE { ( 列名称 [, ...] ) | * } FORCE_NOT_NULL ( 列名称 [, ...] ) FORCE_NULL ( 列名称 [, ...] ) ENCODING 'encoding_name(编码名)'

2、多场景使用介绍
①查看现有表数据

test=# select * from test;user_id | user_name | age | gender | remark ---------+---------------+-----+--------+---------------------------------------------- 1 | Jackie Chan | 45 | male | "police story","project A","rush hour" 3 | Brigitte Li | 46 | female | 4 | Maggie Cheung | 39 | female | 5 | Jet Li | 41 | male | "Fist of Legend","Once Upon a Time in China" 2 | Gong Li | 38 | female | "Farewell My Concubine","Lifetimes Living"(5 行记录)

②带列名导出，默认情况下使用，作为分隔符

test=# copy test to '/tmp/test1.csv' with csv header;COPY 5test=# \! cat /tmp/test1.csvuser_id,user_name,age,gender,remark1,Jackie Chan,45,male,"""police story"",""project A"",""rush hour"""3,Brigitte Li,46,female,4,Maggie Cheung,39,female,5,Jet Li,41,male,"""Fist of Legend"",""Once Upon a Time in China"""2,Gong Li,38,female,"""Farewell My Concubine"",""Lifetimes Living"

③带列名导出，指定使用|作为分隔符

test=# copy test to '/tmp/test1.csv' with csv header DELIMITER '|';COPY 5test=# \! cat /tmp/test1.csvuser_id|user_name|age|gender|remark1|Jackie Chan|45|male|"""police story"",""project A"",""rush hour"""3|Brigitte Li|46|female|4|Maggie Cheung|39|female|5|Jet Li|41|male|"""Fist of Legend"",""Once Upon a Time in China"""2|Gong Li|38|female|"""Farewell My Concubine"",""Lifetimes Living"

④带列名导出，将空字符替换为指定值导出

test=# copy test to '/tmp/test1.csv' with csv header null 'to be supplemented';COPY 5test=# \! cat /tmp/test1.csvuser_id,user_name,age,gender,remark1,Jackie Chan,45,male,"""police story"",""project A"",""rush hour"""3,Brigitte Li,46,female,to be supplemented4,Maggie Cheung,39,female,to be supplemented5,Jet Li,41,male,"""Fist of Legend"",""Once Upon a Time in China"""2,Gong Li,38,female,"""Farewell My Concubine"",""Lifetimes Living"

到此这篇关于如何将postgresql数据库表内数据导出为excel格式的文章就介绍到这了,更多相关postgresq表内数据导出excel格式内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持！