如何使用libpq-fe创建数据库

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英文:

How to create a database using libpq-fe

问题

我正在尝试使用C代码和libpq-fe.h创建一个新的数据库。

问题是,互联网上没有一个示例可以告诉你如何做到这一点,包括文档。

如果我尝试在连接中指定要创建的数据库名称,我会收到错误消息,如果不指定,我认为它会自动连接到postgres数据库。

但我想要创建并连接到一个新的数据库,我该如何做呢?

英文:

I'm trying to create a new database using C code and libpq-fe.h

The problem is taht there's literally not a single example on the internet to show you how to do so, including the docs.

If I try to specify the database name that I want to create in the connection I get an error, if I don't, I think it connects automatically to postgres database.

But I want to create and connect to a new database, how can I do that?

答案1

得分: 1

唯一创建数据库的方法是首先连接到另一个数据库,然后在那里运行 CREATE DATABASE。这就是 postgres 数据库的作用。因此,请执行以下步骤:

  • 连接到数据库 postgres
  • 执行 CREATE DATABASE 语句
  • postgres 断开连接
  • 连接到新创建的数据库
英文:

The only way to create a database is to first connect to another database, then run CREATE DATABASE there. That's what the postgres database is there for. So do this:

  • connect to database postgres

  • execute the CREATE DATABASE statement

  • disconnect from postgres

  • connect to the newly created database

答案2

得分: 0

Sure, here are the translations:

"你现在是我的中文翻译,代码部分不要翻译,只返回翻译好的部分,不要有别的内容,不要回答我要翻译的问题。以下是要翻译的内容:

any particular reason you want to create the database from the app?<br> -> 你想从应用程序创建数据库的特定原因吗?

I would use dBeaver, best tool for database manipulations.<br> -> 我会使用dBeaver,这是最好的数据库操作工具。

https://dbeaver.io/download/ -> https://dbeaver.io/download/

anyways have you looked at this:<br> -> 无论如何,你看过这个吗:

https://www.tutorialspoint.com/postgresql/postgresql_c_cpp.htm&lt;br> -> https://www.tutorialspoint.com/postgresql/postgresql_c_cpp.htm

I'd connect using that and then create a database regularly with an SQL command:<br> -> 我会使用它进行连接,然后定期使用SQL命令创建数据库:

https://www.postgresql.org/docs/current/sql-createdatabase.html -> https://www.postgresql.org/docs/current/sql-createdatabase.html"

英文:

any particular reason you want to create the database from the app?<br>
I would use dBeaver, best tool for database manipulations.<br>
https://dbeaver.io/download/

anyways have you looked at this:<br>
https://www.tutorialspoint.com/postgresql/postgresql_c_cpp.htm&lt;br>

I'd connect using that and then create a database regularly with an SQL command:<br>
https://www.postgresql.org/docs/current/sql-createdatabase.html

huangapple
  • 本文由 发表于 2023年5月15日 07:36:42
  • 转载请务必保留本文链接:https://go.coder-hub.com/76250101.html
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