Postgres:在从bash脚本重新创建/重新填充之前，清除整个数据库 [英] Postgres: clear entire database before re-creating / re-populating from bash script

问题描述

我正在编写一个shell脚本(将成为cronjob)，该脚本将:

I'm writing a shell script (will become a cronjob) that will:

1:转储我的生产数据库

1: dump my production database

2:将转储导入到我的开发数据库中

2: import the dump into my development database

在步骤1和2之间，我需要清除开发数据库(删除所有表?).如何从shell脚本中最好地完成这一工作?到目前为止，它看起来像这样:

Between step 1 and 2, I need to clear the development database (drop all tables?). How is this best accomplished from a shell script? So far, it looks like this:

#!/bin/bash
time=`date '+%Y'-'%m'-'%d'`
# 1. export(dump) the current production database
pg_dump -U production_db_name > /backup/dir/backup-${time}.sql

# missing step: drop all tables from development database so it can be re-populated

# 2. load the backup into the development database
psql -U development_db_name < backup/dir/backup-${time}.sql

推荐答案

我只是删除数据库，然后重新创建它.在UNIX或Linux系统上，应该这样做:

I'd just drop the database and then re-create it. On a UNIX or Linux system, that should do it:

$ dropdb development_db_name
$ createdb development_db_name

实际上，这就是我的方法.

That's how I do it, actually.

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