Ruby on rails 如何将sqlite3表转换为postgresql表？

我在不知道Heroku需要Postgresql的情况下启动了一个Rails项目。现在，我想将sqlite3表转换为postgresql表。我怎么做

我找到了一种获取SQL插入的方法：

BEGIN TRANSACTION;
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('0', 'bac à papier', NULL, 'bac de recyclage', '13309980782012-03-06 03:57:21.219233', '13309980782012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('1', 'bac PVM', 'plastique/verre/métal', NULL, '13310076572012-03-06 03:57:21.219233', '13310076572012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('2', 'bac de déchets', NULL, 'poubelle', '13310076572012-03-06 03:57:21.219233', '13310076572012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('3', 'cafétéria', '', '', '2012-03-06 03:57:21.219233', '2012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('4', 'compost', NULL, NULL, '2012-03-06 03:57:21.219233', '2012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('5', 'consigne', NULL, NULL, '2012-03-06 03:57:21.219233', '2012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('6', 'CRD', NULL, NULL, '2012-03-06 03:57:21.219233', '2012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('7', 'ressources matérielles', NULL, NULL, '2012-03-06 03:57:21.219233', '2012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('8', 'sécurité', NULL, NULL, '2012-03-06 03:57:21.219233', '2012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('10', 'technicien chimie', NULL, NULL, '2012-03-06 03:57:21.219233', '2012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('11', 'technicien biologie', NULL, NULL, '2012-03-06 03:57:21.219233', '2012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('12', 'service informatique', NULL, NULL, '2012-03-06 03:57:21.219233', '2012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('13', 'îlot multi-récupération', 'face au B-227', NULL, '2012-03-06 03:57:21.219233', '2012-03-06 03:57:21.219233');
insert into places ("id", "name", "content", "tags", "created_at", "updated_at") values ('14', 'récupérateurs extérieurs', NULL, NULL, '2012-03-06 03:57:21.219233', '2012-03-06 03:57:21.219233');
COMMIT;

解决方案 下面是我如何解决这个问题的：

我用Chris的解决方案告诉rails我想使用PostgreSQL。然后，我运行了

db:migrate

为了将SQLite表转换为PostgreSQL表，我使用了一个Linux程序sliteman来管理SQLite数据库。有了这个实用程序，我能够将表转换为SQL插入。我登录到PostgreSQL并应用了插入

---

瞧

如果您只是想让本地数据库在postgres上运行以匹配heroku，只需将database.yml更改为如下所示：

development:
  adapter: postgresql
  encoding: utf8
  database: development
  pool: 5
  username: postgres
  password:

test: &TEST
  adapter: postgresql
  encoding: utf8
  database: test
  pool: 5
  username: postgres
  password:

production:
  adapter: postgresql
  encoding: utf8
  database: production
  pool: 5
  username: postgres
  password:

cucumber:
  <<: *TEST

开发：
适配器：postgresql
编码：utf8
数据库：开发
游泳池：5
用户名：postgres
密码：
测试：&测试
适配器：postgresql
编码：utf8
数据库：测试
游泳池：5
用户名：postgres
密码：
制作：
适配器：postgresql
编码：utf8
数据库：生产
游泳池：5
用户名：postgres
密码：
黄瓜：