使用ruby与MS Access数据库交互
ruby常规访问access数据库的方法应该是使用DBI库 : require 'dbi' DBI.connect(DBI:ADO:Provider=Microsoft.Jet.OLEDB.4.0;Data Source=db.mdb;) 可是 简单尝试之后没能成功,提示找不到驱动器ADO,懒得再试,遂找其他方法。 一番搜索之后,发现可以用WIN32O
ruby常规访问access数据库的方法应该是使用DBI库 :
可是 简单尝试之后没能成功,提示找不到驱动器ADO,懒得再试,遂找其他方法。
一番搜索之后,发现可以用WIN32OLE来访问access,写一个简单的类包装之:
使用方法如下:
db=AccessDb.new('f:/db.mdb')
db.open
db.query('select * from foods')
db.fields
db.data
db.execute("insert into foods values (3,'xxx',299,'xo','good!');"
db.close
下面再给出使用ruby压缩修复access数据库的例子:
比如要求压缩db.mdb文件,压缩后的文件名为new_db.mdb操作如下:
fixaccess('f:/db.mdb','f:/new_db.mdb')
方法fixaccess中的sp在安装了office2007的系统上测试成功,其他版本
的office可能要修改sp中的Provider.

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

1. Open settings in Windows 11. You can use Win+I shortcut or any other method. 2. Go to the Apps section and click Apps & Features. 3. Find the application you want to prevent from running in the background. Click the three-dot button and select Advanced Options. 4. Find the [Background Application Permissions] section and select the desired value. By default, Windows 11 sets power optimization mode. It allows Windows to manage how applications work in the background. For example, once you enable battery saver mode to preserve battery, the system will automatically close all apps. 5. Select [Never] to prevent the application from running in the background. Please note that if you notice that the program is not sending you notifications, failing to update data, etc., you can

DeepSeek cannot convert files directly to PDF. Depending on the file type, you can use different methods: Common documents (Word, Excel, PowerPoint): Use Microsoft Office, LibreOffice and other software to export as PDF. Image: Save as PDF using image viewer or image processing software. Web pages: Use the browser's "Print into PDF" function or the dedicated web page to PDF tool. Uncommon formats: Find the right converter and convert it to PDF. It is crucial to choose the right tools and develop a plan based on the actual situation.

The Java reflection mechanism allows programs to dynamically modify the behavior of classes without modifying the source code. By operating the Class object, you can create instances through newInstance(), modify private field values, call private methods, etc. Reflection should be used with caution, however, as it can cause unexpected behavior and security issues, and has a performance overhead.

Common exception types and their repair measures in Java function development During the development of Java functions, various exceptions may be encountered, which affect the correct execution of the function. The following are common exception types and their repair measures: 1. NullPointerException Description: Thrown when accessing an object that has not been initialized. Fix: Make sure you check the object for non-null before using it. Sample code: try{Stringname=null;System.out.println(name.length());}catch(NullPointerExceptione){

Oracle can read dbf files through the following steps: create an external table and reference the dbf file; query the external table to retrieve data; import the data into the Oracle table.

How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())

Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps

BitgetLaunchpool is a dynamic platform designed for all cryptocurrency enthusiasts. BitgetLaunchpool stands out with its unique offering. Here, you can stake your tokens to unlock more rewards, including airdrops, high returns, and a generous prize pool exclusive to early participants. What is BitgetLaunchpool? BitgetLaunchpool is a cryptocurrency platform where tokens can be staked and earned with user-friendly terms and conditions. By investing BGB or other tokens in Launchpool, users have the opportunity to receive free airdrops, earnings and participate in generous bonus pools. The income from pledged assets is calculated within T+1 hours, and the rewards are based on
