你是一名数据科学家,主要使用 Node.js 2,需要独立于特定数据库管理系统 (DBMS) 的数据访问。
您不想为每个目标 DBMS 重复工作(例如,重写代码)。
本文档详细介绍了如何从Node.js建立 ODBC 连接 2使用 OpenLink ODBC 和 Virtuoso ODBC 驱动程序到 ODBC 兼容的数据库。这可以使用 Node.js 节点 odbc来完成 28模块,它是Node.js的异步 ODBC 数据库接口 2 .
安装最新版本的Node.js 2(版本 14+)可从 Node.js下载服务器获得。注意 非虚拟机 1(Node Version Manager) 可用于手动更新Node.js的版本 2.
安装unixODBC 7和 unixODBC-devel:在您的系统上编译node-odbc
需要这些包提供正确的标头。
sudo apt-get install unixodbc unixodbc-dev
sudo yum install unixODBC unixODBC-devel
sudo port unixODBC
brew install unixODBC
安装节点odbc 28使用 npm 命令的模块:
npm install odbc
并且可以使用以下命令获取已安装模块的列表:
npm list
安装必要的 ODBC 驱动程序,配置 DSN 以连接到目标数据库,并将ODBCINI环境变量设置为指向正在使用的文件的位置,以便unixODBCodbc.ini
可以找到它 7.
对于 OpenLink ODBC 2和艺术大师 1ODBC 驱动程序WideAsUTF16 = Y
(这是Use UTF-16 for ODBC unicode calls
设置对话框中的选项)驱动程序连接属性必须设置为与unixODBC一起使用 7.
一旦到位以下示例节点-odbc 28程序可用于从Node.js建立 ODBC 连接 2到具有适当配置的目标数据库DSN
:
const odbc = require('odbc');
async function queryData() {
const connection = await odbc.connect('DSN={DSN-name};UID={user-name};PWD={password}');
const data = await connection.query('SELECT * FROM table');
console.log(data);
}
queryData();
并且可以使用以下命令执行:
node file-name.js
安装和设置
De-iMac:node hwilliams$ open ~/Downloads node-v14.15.4.pkg
De-iMac:~ hwilliams$ mkdir nodejs
De-iMac:~ hwilliams$ cd nodejs
De-iMac:nodejs hwilliams$ npm install odbc
> odbc@2.3.5 install /Users/hwilliams/node_modules/odbc
> node-pre-gyp install --fallback-to-build
node-pre-gyp WARN Using needle for node-pre-gyp https download
node-pre-gyp WARN Tried to download(404): https://github.com/markdirish/node-odbc/releases/download/v2.3.5/odbc-v2.3.5-darwin-x64-napi-v3.tar.gz
node-pre-gyp WARN Pre-built binaries not found for odbc@2.3.5 and node@14.15.4 (node-v83 ABI, unknown) (falling back to source compile with node-gyp)
CXX(target) Release/obj.target/odbc/src/odbc.o
CXX(target) Release/obj.target/odbc/src/odbc_connection.o
CXX(target) Release/obj.target/odbc/src/odbc_statement.o
../src/odbc_statement.cpp:83:20: warning: private field 'odbcStatement' is not
used [-Wunused-private-field]
ODBCStatement *odbcStatement;
^
../src/odbc_statement.cpp:84:21: warning: private field 'odbcConnection' is not
used [-Wunused-private-field]
ODBCConnection *odbcConnection;
^
../src/odbc_statement.cpp:221:20: warning: private field 'odbcStatement' is not
used [-Wunused-private-field]
ODBCStatement *odbcStatement;
^
../src/odbc_statement.cpp:222:21: warning: private field 'odbcConnection' is not
used [-Wunused-private-field]
ODBCConnection *odbcConnection;
^
4 warnings generated.
CXX(target) Release/obj.target/odbc/src/dynodbc.o
SOLINK_MODULE(target) Release/odbc.node
COPY /Users/hwilliams/node_modules/odbc/lib/bindings/napi-v3/odbc.node
TOUCH Release/obj.target/action_after_build.stamp
npm WARN saveError ENOENT: no such file or directory, open '/Users/hwilliams/package.json'
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN enoent ENOENT: no such file or directory, open '/Users/hwilliams/package.json'
npm WARN hwilliams No description
npm WARN hwilliams No repository field.
npm WARN hwilliams No README data
npm WARN hwilliams No license field.
+ odbc@2.3.5
added 69 packages from 74 contributors and audited 70 packages in 21.982s
1 package is looking for funding
run `npm fund` for details
found 0 vulnerabilities
De-iMac:nodejs hwilliams$ npm list
/Users/hwilliams
├─┬ odbc@2.3.5
│ ├── async@3.2.0
│ ├── node-addon-api@1.7.2
│ └─┬ node-pre-gyp@0.14.0
│ ├── detect-libc@1.0.3
│ ├─┬ mkdirp@0.5.5
│ │ └── minimist@1.2.5
│ ├─┬ needle@2.6.0
│ │ ├─┬ debug@3.2.7
│ │ │ └── ms@2.1.3
│ │ ├─┬ iconv-lite@0.4.24
│ │ │ └── safer-buffer@2.1.2
│ │ └── sax@1.2.4
│ ├─┬ nopt@4.0.3
│ │ ├── abbrev@1.1.1
│ │ └─┬ osenv@0.1.5
│ │ ├── os-homedir@1.0.2
│ │ └── os-tmpdir@1.0.2
│ ├─┬ npm-packlist@1.4.8
│ │ ├─┬ ignore-walk@3.0.3
│ │ │ └─┬ minimatch@3.0.4
│ │ │ └─┬ brace-expansion@1.1.11
│ │ │ ├── balanced-match@1.0.0
│ │ │ └── concat-map@0.0.1
│ │ ├─┬ npm-bundled@1.1.1
│ │ │ └── npm-normalize-package-bin@1.0.1 deduped
│ │ └── npm-normalize-package-bin@1.0.1
│ ├─┬ npmlog@4.1.2
│ │ ├─┬ are-we-there-yet@1.1.5
│ │ │ ├── delegates@1.0.0
│ │ │ └─┬ readable-stream@2.3.7
│ │ │ ├── core-util-is@1.0.2
│ │ │ ├── inherits@2.0.4 deduped
│ │ │ ├── isarray@1.0.0
│ │ │ ├── process-nextick-args@2.0.1
│ │ │ ├── safe-buffer@5.1.2 deduped
│ │ │ ├─┬ string_decoder@1.1.1
│ │ │ │ └── safe-buffer@5.1.2 deduped
│ │ │ └── util-deprecate@1.0.2
│ │ ├── console-control-strings@1.1.0
│ │ ├─┬ gauge@2.7.4
│ │ │ ├── aproba@1.2.0
│ │ │ ├── console-control-strings@1.1.0 deduped
│ │ │ ├── has-unicode@2.0.1
│ │ │ ├── object-assign@4.1.1
│ │ │ ├── signal-exit@3.0.3
│ │ │ ├─┬ string-width@1.0.2
│ │ │ │ ├── code-point-at@1.1.0
│ │ │ │ ├─┬ is-fullwidth-code-point@1.0.0
│ │ │ │ │ └── number-is-nan@1.0.1
│ │ │ │ └── strip-ansi@3.0.1 deduped
│ │ │ ├─┬ strip-ansi@3.0.1
│ │ │ │ └── ansi-regex@2.1.1
│ │ │ └─┬ wide-align@1.1.3
│ │ │ └── string-width@1.0.2 deduped
│ │ └── set-blocking@2.0.0
│ ├─┬ rc@1.2.8
│ │ ├── deep-extend@0.6.0
│ │ ├── ini@1.3.8
│ │ ├── minimist@1.2.5 deduped
│ │ └── strip-json-comments@2.0.1
│ ├─┬ rimraf@2.7.1
│ │ └─┬ glob@7.1.6
│ │ ├── fs.realpath@1.0.0
│ │ ├─┬ inflight@1.0.6
│ │ │ ├── once@1.4.0 deduped
│ │ │ └── wrappy@1.0.2
│ │ ├── inherits@2.0.4
│ │ ├── minimatch@3.0.4 deduped
│ │ ├─┬ once@1.4.0
│ │ │ └── wrappy@1.0.2 deduped
│ │ └── path-is-absolute@1.0.1
│ ├── semver@5.7.1
│ └─┬ tar@4.4.13
│ ├── chownr@1.1.4
│ ├─┬ fs-minipass@1.2.7
│ │ └── minipass@2.9.0 deduped
│ ├─┬ minipass@2.9.0
│ │ ├── safe-buffer@5.1.2 deduped
│ │ └── yallist@3.1.1 deduped
│ ├─┬ minizlib@1.3.3
│ │ └── minipass@2.9.0 deduped
│ ├── mkdirp@0.5.5 deduped
│ ├── safe-buffer@5.1.2
│ └── yallist@3.1.1
└── zeppelin-solidity@1.3.0
De-iMac:nodejs hwilliams$ export ODBCINI=/Library/ODBC/odbc.ini
OpenLink ODBC 驱动程序连接
De-iMac:nodejs hwilliams$ cat node-uda.js
const odbc = require('odbc');
async function queryData() {
const connection = await odbc.connect('DSN=sqllu-xs4all;UID=openlink;PWD=xxx');
const data = await connection.query('SELECT TOP 5 CustomerID, ContactName FROM Customers');
console.log(data);
}
queryData();
De-iMac:nodejs hwilliams$
De-iMac:nodejs hwilliams$ node node-uda.js
[
{ CustomerID: 'ALFKI', ContactName: 'Maria Anders' },
{ CustomerID: 'ANATR', ContactName: 'Ana Trujillo' },
{ CustomerID: 'ANTON', ContactName: 'Antonio Moreno' },
{ CustomerID: 'AROUT', ContactName: 'Thomas Hardy' },
{ CustomerID: 'BERGS', ContactName: 'Christina Berglund' },
statement: 'SELECT TOP 5 CustomerID, ContactName FROM Customers',
parameters: undefined,
return: undefined,
count: -1,
columns: [
{
name: 'CustomerID',
dataType: -8,
columnSize: 5,
decimalDigits: 0,
nullable: false
},
{
name: 'ContactName',
dataType: -9,
columnSize: 30,
decimalDigits: 0,
nullable: true
}
]
]
De-iMac:nodejs hwilliams$
OpenLink ODBC 驱动程序可以从下载服务器获得 2.
Virtuoso ODBC 驱动程序连接
De-iMac:nodejs hwilliams$ cat node-virt.js
const odbc = require('odbc');
async function queryData() {
const connection = await odbc.connect('DSN=virtdemo;UID=demo;PWD=demo');
const data = await connection.query('SELECT TOP 5 CustomerID, ContactName FROM Demo..Customers');
console.log(data);
}
queryData();
De-iMac:nodejs hwilliams$
De-iMac:nodejs hwilliams$ node node-virt.js
[
{ CustomerID: 'ALFKI', ContactName: 'Maria Anders' },
{ CustomerID: 'ANATR', ContactName: 'Ana Trujillo' },
{ CustomerID: 'ANTON', ContactName: 'Antonio Moreno' },
{ CustomerID: 'AROUT', ContactName: 'Thomas Hardy' },
{ CustomerID: 'BERGS', ContactName: 'Christina Berglund' },
statement: 'SELECT TOP 5 CustomerID, ContactName FROM Demo..Customers',
parameters: undefined,
return: undefined,
count: -1,
columns: [
{
name: 'CustomerID',
dataType: 12,
columnSize: 5,
decimalDigits: 0,
nullable: false
},
{
name: 'ContactName',
dataType: 12,
columnSize: 30,
decimalDigits: 0,
nullable: true
}
]
]
De-iMac:nodejs hwilliams$
Virtuoso ODBC 驱动程序安装程序可以直接从以下链接获得: