标签: pg

我更新了包含pg gem的bundler,我收到了错误

An error occured while installing pg (0.14.0), and Bundler cannot continue.
Make sure that `gem install pg -v '0.14.0'` succeeds before bundling.

我在rubygems.org上检查了这个gem ,今天(6月23日)发布了这个版本.我不知道为什么,但版本不能正常工作并返回上面的错误.

解决方案是设置特定版本 - 在这种情况下

宝石"pg","〜> 0.13.2"

有同样问题的人吗？

我的数据库与应用程序位于不同的服务器上.当我运行"捆绑"时,我收到以下错误:

没有pg_config ...无论如何都要尝试.如果构建失败,请使用--with-pg-config =/path/to/pg_config重试

如果pg未实际安装在应用程序服务器上,如何设置pg配置路径？我也尝试过:

bundle config build.pg --without-pg_config

谢谢

我正在尝试创建一个节点应用程序，它可以通过创建数据库然后创建表和字段来在数据库端自行设置。下面是我用来独立完成每项任务的两个函数。我能否获得有关如何将这些组合在一起的帮助？我应该使用 pg-promise 而不是 pg 吗？

function createDatabase(){

const pool = new pg.Pool({
    user: 'postgres',
    host: '127.0.0.1',
    database: 'postgres',
    password: 'postgres',
    port: '5432'}
);

pool.query("CREATE DATABASE myApp;", 
    (err, res) => {
    console.log(err, res);
    pool.end();

});
}


function createTable(){

const pool = new pg.Pool({
    user: 'postgres',
    host: '127.0.0.1',
    database: 'myApp',
    password: 'postgres',
    port: '5432'}
);

pool.query("CREATE TABLE session(sessionguid UUID NOT NULL, created 
text NOT NULL, sessionlife integer NOT NULL)", 
    (err, res) => {
    console.log(err, res);
    pool.end();
});

}

我有一个连接到数据库并可以从中获取数据的脚本，当任何新记录添加到数据库表中时，我可以以某种方式让它通知我吗

我一直在尝试在运行 Big Sur 的计算机（带有 M1 的 Macbook Pro 2020）上安装一个 rails 项目。

我安装了 PostgresApp。

运行时bundle install它无法构建pggem，所以我尝试手动安装 gem（通过这样做gem install pg- 也尝试使用gem install pg -- --with-pg-config=/Applications/Postgres.app/Contents/Versions/10/bin/pg_config）。

我收到一条错误消息：

ERROR:  Error installing pg:
ERROR: Failed to build gem native extension.

Can't find the PostgreSQL client library (libpq)
*** extconf.rb failed ***

检查错误日志时，我看到：

have_library: checking for PQconnectdb() in -lpq... -------------------- no

ld: warning: ignoring file /Applications/Postgres.app/Contents/Versions/13/lib/libpq.dylib, building for macOS-arm64 but attempting to link with file built for macOS-x86_64 …

我想为Heroku构建一个Rails 3应用程序.他们使用Postgres作为他们的数据库,所以我通过MacPorts安装了postgres 9.0.现在我需要一个postgres gem,并且一致认为,出于性能原因,你需要pg gem.但是当我尝试通过rvm下的gem install安装pg时,我完全感到困惑.

我已经非常明确地指定了所有postgres目录的位置,但仍然无法完成安装:

$ env ARCHFLAGS='-arch x86_64' gem install pg -- \
   --with-pg-config=/opt/local/var/db/postgresql90/defaultdb/postgresql.conf \
   --with-pg-include=/opt/local/include/postgresql90/ \
   --with-pg-lib=/opt/local/lib/postgresql90/

Using config values from /opt/local/var/db/postgresql90/defaultdb/postgresql.conf
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/Users/guy/.rvm/ruby-1.9.2-p136/bin/ruby
    --with-pg
    --without-pg
    --with-pg-dir
    --without-pg-dir
    --with-pg-include=${pg-dir}/include
    --with-pg-lib=${pg-dir}/lib
    --with-pg-config
extconf.rb:24:in ``': …

我使用此命令备份200GB数据库(postgres 9.1,win7 x64):

pg_dump -Z 1 db_name > backup

它创建了16GB的文件,我觉得很好,因为以前的备份工作(并且由ext工具打包)具有相似的大小.现在,当我尝试使用时恢复到PG9.2时pg_restore,我收到错误:

input file does not appear to be a valid archive

用pg_restore -Ft:

[tar archiver] corrupt tar header found in ? (expected 13500752, com
puted 78268) file position 512

Gzip也表明它已经损坏了.当我在Total Commander中打开备份文件时,内部文件只有1.8GB.当我在寻找解决方案时,-Cf可能需要使用参数进行转储.

现在哪种格式的文件？它只是tar或gzip(winrar显示gzip)？有没有办法正确地恢复它或者它以某种方式被破坏(转储时没有错误)？可能是由于tar或gzip的文件大小限制？

这是一个非常奇怪的.我试图做一个简单的rake db:test:clone或创建,无论我做什么,从清除gemset到尝试各种database.yml配置,我得到最奇怪的错误:

LINE 1: CREATE DATABASE "tdt_test"0.0

有没有人见过这样的事情呢？WTF是"0.0!？" 我正在运行Rails 3.2,RSpec和pg gem 0.14.1

 04:15 PM ~/projects/dmvcs (feature/helpdesk) => RAILS_ENV=test rake db:create
  /Users/jlippiner/.rvm/gems/ruby-1.9.3-p194@dmvcs/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:251:in `block in require': iconv will be deprecated in the future, use String#encode instead.
  Notice: for 10x faster LSI support, please install http://rb-gsl.rubyforge.org/
  PG::Error: ERROR:  syntax error at or near "0.0"
  LINE 1: CREATE DATABASE "tdt_test"0.0
                                    ^
  : CREATE DATABASE "tdt_test"0.0
  /Users/jlippiner/.rvm/gems/ruby-1.9.3-p194@dmvcs/gems/activerecord-3.2.8/lib/active_record/connection_adapters/postgresql_adapter.rb:654:in `async_exec'
  /Users/jlippiner/.rvm/gems/ruby-1.9.3-p194@dmvcs/gems/activerecord-3.2.8/lib/active_record/connection_adapters/postgresql_adapter.rb:654:in `block in execute'
  /Users/jlippiner/.rvm/gems/ruby-1.9.3-p194@dmvcs/gems/activerecord-3.2.8/lib/active_record/connection_adapters/abstract_adapter.rb:280:in `block in log'
  /Users/jlippiner/.rvm/gems/ruby-1.9.3-p194@dmvcs/gems/activesupport-3.2.8/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  /Users/jlippiner/.rvm/gems/ruby-1.9.3-p194@dmvcs/gems/activerecord-3.2.8/lib/active_record/connection_adapters/abstract_adapter.rb:275:in `log'
  /Users/jlippiner/.rvm/gems/ruby-1.9.3-p194@dmvcs/gems/activerecord-3.2.8/lib/active_record/connection_adapters/postgresql_adapter.rb:653:in `execute'
  /Users/jlippiner/.rvm/gems/ruby-1.9.3-p194@dmvcs/gems/activerecord-3.2.8/lib/active_record/connection_adapters/postgresql_adapter.rb:768:in …

Heyo.如果在另一个帖子中回答了这个问题,我会提前道歉.我搜索了网站,但没有找到答案.但是,最接近的相关问题是启动server-libq.5.dylib时Ruby on Rails/PostgreSQL - Library not Loaded错误,但它从未得到解决,答案对我没有帮助.

我正在尝试在我的Mac OSX 10.6.8上运行PostgreSQL.我已经安装了Ruby 1.9.3p392和Rails 3.2.13.

由于我的10.6.8和PostGresApp需要10.7+,我尝试使用此处提供的手动安装程序(v9.2.3)安装PG:http://www.enterprisedb.com/products-services-training/pgdownload

我首先将它安装到默认路径:/Library/PostgreSQL/9.2/.然后我安装了pg gem(PATH=$PATH:/Library/PostgreSQL/9.2/bin sudo gem install pg).当我尝试rails s启动localhost时,我收到了以下错误.

经过一些阅读,我猜测它可能是一个路径错误,所以我删除了pg gem,然后使用了postgresql卸载程序.然后我重新安装了/users/stewartmccoy/Library/PostgreSQL/9.2/...中的pg,然后重新安装了pg gem.但我仍然得到同样的错误.

有关如何正确安装PostgreSQL并让我的rails服务器运行的任何想法？

stewart-mccoys-macbook:footy_subs stewartmccoy$ rails s
/Users/stewartmccoy/.rvm/gems/ruby-1.9.3-p392/gems/pg-0.14.1/lib/pg.rb:4:in `require': dlopen(/Users/stewartmccoy/.rvm/gems/ruby-1.9.3-p392/gems/pg-0.14.1/lib/pg_ext.bundle, 9): Library not loaded: libpq.5.dylib (LoadError)
  Referenced from: /Users/stewartmccoy/.rvm/gems/ruby-1.9.3-p392/gems/pg-0.14.1/lib/pg_ext.bundle
  Reason: image not found - /Users/stewartmccoy/.rvm/gems/ruby-1.9.3-p392/gems/pg-0.14.1/lib/pg_ext.bundle
    from /Users/stewartmccoy/.rvm/gems/ruby-1.9.3-p392/gems/pg-0.14.1/lib/pg.rb:4:in `<top (required)>'
    from /Users/stewartmccoy/.rvm/gems/ruby-1.9.3-p392@global/gems/bundler-1.3.4/lib/bundler/runtime.rb:72:in `require'
    from /Users/stewartmccoy/.rvm/gems/ruby-1.9.3-p392@global/gems/bundler-1.3.4/lib/bundler/runtime.rb:72:in `block (2 levels) in require'
    from /Users/stewartmccoy/.rvm/gems/ruby-1.9.3-p392@global/gems/bundler-1.3.4/lib/bundler/runtime.rb:70:in `each'
    from /Users/stewartmccoy/.rvm/gems/ruby-1.9.3-p392@global/gems/bundler-1.3.4/lib/bundler/runtime.rb:70:in `block in require'
    from /Users/stewartmccoy/.rvm/gems/ruby-1.9.3-p392@global/gems/bundler-1.3.4/lib/bundler/runtime.rb:59:in `each'
    from …

使用此查询时(与Railscasts第273集中相同):

@locations = Location.near(params[:search], 50, :order => :distance)

或者,更简洁:

@mymodels = MyModel.near(address, distance, order: :distance)

我收到错误:

PG::UndefinedColumn: ERROR:  column mymodels.distance does not exist

该distance列应该由Geocoder gem添加到结果中,但它似乎没有出现在结果中(所以我得到了上面的错误).