我最近开始尝试设置一个新的本地 PostgreSQL 服务器，连接到现有的 Rails 应用程序。我有一张要插入的表：
postgres=# \d+ events.t_sales_events
Table "events.t_sales_events"
Column | Type | Modifiers | Storage | Stats target | Description
------------+-----------------------------+---------------------------------------------------------------------+----------+--------------+-------------
id | integer | not null default nextval('events.t_sales_events_id_seq'::regclass) | plain | |
event_name | character varying(45) | not null | extended | |
actor_id | integer | | plain | |
actor_type | character varying(45) | | extended | |
json | jsonb | | extended | |
created | timestamp without time zone | not null …当我psql --version在railsApp容器内运行命令时，我得到9.4.12，当我在postgres容器内运行相同的命令时，我得到9.6.2. 我怎样才能让版本匹配？
当我尝试在执行pg_dumpsql 导入的Rails App 上进行迁移时，出现以下错误。
pg_dump: server version: 9.6.2; pg_dump version: 9.4.12
pg_dump: aborting because of server version mismatch
rails aborted!
这是我的 Docker-compose.yml 文件：
version: "2.1"
services:
railsApp:
build:
context: ./
ports:
- "3000:3000"
links:
- postgres
volumes:
- .:/app
postgres:
image: postgres:9.6
ports:
- "5432:5432"
volumes:
- ./.postgres:/var/lib/postgresql
Dockerfile：
FROM ruby:2.3.3
# setup /app as our working directory
RUN mkdir /app
WORKDIR /app
# Replace …我在 pg_log 文件中出现了数千次以下错误。如何解决它们。
index "meeting_pkey" contains unexpected zero page at block 410.Please REINDEX it.
index "faultevent_props_pkey" contains unexpected zero page at block 37290.
index "faultevent_pkey" contains unexpected zero page at block 1704
使用 VSCode。为 Windows 安装了最新的 Node.js（首次用户）以及所需的模块，其中一个是“pg”（npm install pg）
在我的脚本的顶部有这样的内容：
const pg = require('pg');
当我尝试调试时，当它到达该行时我收到此错误：
Exception has occurred: Error
Error: Cannot find module 'pg'
at Function.Module._resolveFilename (module.js:547:15)
at Function.Module._load (module.js:474:25)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)
at Object.<anonymous> (c:\EBI\Work\Node-pg-log\get_pg_log.js:3:12)
at Module._compile (module.js:649:14)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
我还需要安装或设置其他东西吗？调试到位。
当我尝试从具有日期变量的数据库中解码 JSON 对象时，出现错误“由于未捕获的异常‘NSInvalidArgumentException’而终止应用程序，原因：‘JSON 写入中的无效类型 (__NSTaggedDate)’”。错误发生在以下代码行： let jsonData = try JSONSerialization.data(withJSONObject: self) 中：
extension Array where Element == Dictionary<String,Any> {
func decode<T>() throws -> [T] where T: Codable {
let jsonData = try JSONSerialization.data(withJSONObject: self)
// 1.
let decoder = JSONDecoder()
// 2.
return try decoder.decode([T].self, from: jsonData)
}
}
我使用此方法使用 PG 依赖项将 Postgres SELECT 查询的结果转换为 Codable 对象数组。
case .success(let result):
let array = result.rows.map { Dictionary($0) }
let objects = try! array.decode() as [Model]
completion(objects,nil)
我在使用 Docker 运行 Ruby on Rails 项目时遇到问题。我有预感这与运行 macOS Catalina (10.15.1) 有关。当我尝试这样做时，问题就出现了docker-compose run web rake db:create。
当我运行时，docker-compose run web rake db:create我得到以下输出：
Starting vft_db_1 ... done
PG::InvalidParameterValue: ERROR: invalid value for parameter "client_min_messages": "panic"
HINT: Available values: debug5, debug4, debug3, debug2, debug1, log, notice, warning, error.
: SET client_min_messages TO 'panic'
/usr/local/bundle/gems/activerecord-4.2.0/lib/active_record/connection_adapters/postgresql/database_statements.rb:155:in `async_exec'
/usr/local/bundle/gems/activerecord-
...
Couldn't create database for {"adapter"=>"postgresql", "encoding"=>"unicode", "host"=>"db", "username"=>"postgres", "password"=>nil, "pool"=>5, "database"=>"vft_test", "client_min_messages"=>"warning"}
这是我的database.yml
default: &default
adapter: postgresql
encoding: unicode
host: db
username: …我有一个查询
select count(id), status, "createdAt"::date from "ProjectLog" where "projectId" = (select id from "Project" where slug = ${id}) and "createdAt" > current_date - interval '${interval} day' group by "createdAt"::date, status;
我还尝试过用户Prisma.sql在引号内传递值，但它不断抛出错误，它期望 1 个参数，但 fount 2。
我的 prisma 没有这个问题，2.20.1
这个问题只发生在版本上3.3.0
Query: select count(id) as count, status, "createdAt"::date from "ProjectLog" where "projectId" = (select id from "Project" where slug = $1) and "createdAt" > current_date - interval '$2 day' and key notnull group by "createdAt"::date, status
Param: ["main","30"] …只是想发布一个问题，我gem install pg -v '0.21.0'在 M1 Mac 系统中安装 2 个项目时遇到问题，有人遇到过这样的问题吗
这是我收到的错误
checking for pg_config_manual.h... yes
checking for PQconnectdb() in -lpq... no
checking for PQconnectdb() in -llibpq... no
checking for PQconnectdb() in -lms/libpq... no
Can't find the PostgreSQL client library (libpq)
> *** extconf.rb failed ***
Postgres 是通过 Homebrew 安装的，并且还安装了 libpq，我尝试在安装 gem pg 时指向 libpq 并尝试解决问题，但这也不起作用，附加 mkmf 日志以获取有关错误的更多详细信息，仅供参考 Postgres 是安装后，我还可以通过终端和其他软件连接到它。我从堆栈中尝试了很多答案都无济于事我对 Ruby 和 MAC 很陌生，任何帮助都会很棒
更多信息，但不确定安装 ruby 版本 2.5.0 和 2.3.6 时是否存在相关问题，但现已修复（之前显示为已损坏，因此将其清除并在手动将 openssl@1.0 手动配置到 MAC 后再次安装），但当它被损坏时pg 和捆绑安装对于我的一个项目都运行良好，但 Ruby 2.3.6 版本安装失败 …
我尝试从 nodeJs 连接到 rds postgresql版本 12，如下所述。它工作完全正常，没有任何问题。
const config = {
user: process.env.PG_DB_USERNAME,
password: process.env.PG_DB_PASSWORD,
database: process.env.PG_DB_NAME,
host: process.env.PG_DB_HOST,
port: process.env.PG_DB_PORT,
}
const pool = new Pool(config)
当我们使用 postgresql 15.2 版 从节点 Js 连接时，我们最终遇到了以下错误。
错误
{"length":181,"name":"error","severity":"FATAL","code":"28000","file":"auth.c","line":"543","routine":"ClientAuthentication","level":"error","timestamp":"2023-06-19T14:13:33.294Z"}
[ERROR] error: no pg_hba.conf entry for host "XXXXX", user "test", database "testdb", no encryption
at Parser.parseErrorMessage (/usr/src/app/node_modules/pg-protocol/dist/parser.js:287:98)
at Parser.handlePacket (/usr/src/app/node_modules/pg-protocol/dist/parser.js:126:29)
at Parser.parse (/usr/src/app/node_modules/pg-protocol/dist/parser.js:39:38)
at Socket.<anonymous> (/usr/src/app/node_modules/pg-protocol/dist/index.js:11:42)
at Socket.emit (node:events:526:28)
at Socket.emit (node:domain:475:12)
at addChunk (node:internal/streams/readable:315:12)
at readableAddChunk (node:internal/streams/readable:289:9)
at Socket.Readable.push (node:internal/streams/readable:228:10)
at TCP.onStreamRead …即时通讯在Ubuntu 12.04上运行,我正在尝试在Ruby 1.9.3p194/Rails 3.2.3上安装pg gem v'0.12.2'.我已经安装了libpq-dev和build-essential但我仍然得到同样的错误:
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions into the /var/lib/gems/1.9.1 directory.
fernando@ubuntu:/media/fernando/OS/Rails/oops_booking$ sudo gem install pg -v '0.12.2'
Building native extensions. This could take a while...
ERROR: Error installing pg:
ERROR: Failed to build gem native extension.
/usr/bin/ruby1.9.1 extconf.rb
checking for pg_config... yes
Using config values from /usr/bin/pg_config
checking for libpq-fe.h... yes
checking for libpq/libpq-fs.h... yes
checking for PQconnectdb() in -lpq... yes
checking for PQconnectionUsedPassword()... yes
checking for PQisthreadsafe()... yes …