如何将 sqlite3 表转换为 postgresql 表？答案

【问题标题】：How to turn a sqlite3 table to a postgresql table?如何将 sqlite3 表转换为 postgresql 表？
【发布时间】：2012-03-07 16:04:58
【问题描述】：

我在不知道 Heroku 需要 Postgresql 的情况下使用 Rails 开始了一个项目。现在我想将我的 sqlite3 表转换为 postgresql 表。我该怎么做？

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;

解决方案这是我解决问题的方法：

我使用 Chris 的解决方案告诉 rails 我想使用 PostgreSQL。然后，我跑了db:migrate。

为了将我的 SQLite 表转换为 PostgreSQL 表，我使用了 Sliteman，这是一个用于管理 SQLite 数据库的 Linux 程序。使用此实用程序，我能够将表转换为 SQL 插入。我登录到 PostgreSQL 并应用了插入。

瞧！

【问题讨论】：

标签： ruby-on-rails postgresql

【解决方案1】：

如果您只想让本地数据库在 postgres 上运行以匹配 heroku，只需将您的 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

这是假设您拥有名为“postgres”的 postgres 角色。如果您使用的是 Mac，则默认情况下您的用户名应该是您的用户短名。

【讨论】：