三级联动(数据库设计)
第一步骤：建表语句，等级分明、三个级别当创建三张表。 第二步骤：插入省份信息表数据。 第三步骤：插入城市信息表数据。 第四步骤：插入区县信息表数据。
第一步骤：建表语句，等级分明、三个级别当创建三张表。
第二步骤：插入省份信息表数据。
第三步骤：插入城市信息表数据。
第四步骤：插入区县信息表数据。
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
1378
52
Steps to upgrade to the latest version of WeChat (Easily master the upgrade method to the latest version of WeChat)
Jun 01, 2024 pm 10:24 PM
WeChat is one of the social media platforms in China that continuously launches new versions to provide a better user experience. Upgrading WeChat to the latest version is very important to keep in touch with family and colleagues, to stay in touch with friends, and to keep abreast of the latest developments. 1. Understand the features and improvements of the latest version. It is very important to understand the features and improvements of the latest version before upgrading WeChat. For performance improvements and bug fixes, you can learn about the various new features brought by the new version by checking the update notes on the WeChat official website or app store. 2. Check the current WeChat version We need to check the WeChat version currently installed on the mobile phone before upgrading WeChat. Click to open the WeChat application "Me" and then select the menu "About" where you can see the current WeChat version number. 3. Open the app
This Apple ID is not yet in use in the iTunes Store: Fix
Jun 10, 2024 pm 05:42 PM
When logging into iTunesStore using AppleID, this error saying "This AppleID has not been used in iTunesStore" may be thrown on the screen. There are no error messages to worry about, you can fix them by following these solution sets. Fix 1 – Change Shipping Address The main reason why this prompt appears in iTunes Store is that you don’t have the correct address in your AppleID profile. Step 1 – First, open iPhone Settings on your iPhone. Step 2 – AppleID should be on top of all other settings. So, open it. Step 3 – Once there, open the “Payment & Shipping” option. Step 4 – Verify your access using Face ID. step
Shazam app not working in iPhone: Fix
Jun 08, 2024 pm 12:36 PM
Having issues with the Shazam app on iPhone? Shazam helps you find songs by listening to them. However, if Shazam isn't working properly or doesn't recognize the song, you'll have to troubleshoot it manually. Repairing the Shazam app won't take long. So, without wasting any more time, follow the steps below to resolve issues with Shazam app. Fix 1 – Disable Bold Text Feature Bold text on iPhone may be the reason why Shazam is not working properly. Step 1 – You can only do this from your iPhone settings. So, open it. Step 2 – Next, open the “Display & Brightness” settings there. Step 3 – If you find that “Bold Text” is enabled
WiFi calling not working on iPhone: Fix
Jun 03, 2024 am 11:16 AM
Can't enable Wi-Fi calling on iPhone? Call quality is improved and you can communicate even from remote locations where cellular networks are not as strong. Wi-Fi Calling also improves standard call and video call quality. So, if you can't use Wi-Fi calling on your phone, these solutions might help you fix the problem. Fix 1 – Enable Wi-Fi Calling Manually You must enable the Wi-Fi Calling feature in your iPhone settings. Step 1 – For this, you have to open Settings. Step 2 – Next, just scroll down to find and open the “Phone” settings Step 3 – In the phone settings, scroll down and open the “Wi-Fi Calling” setting. Step 4 – In the Wi-Fi Calling page, change “This iPhone
Zhengtu IPx classic animation 'Journey to the West' The journey to the west is fearless and fearless
Jun 10, 2024 pm 06:15 PM
Journey through the vastness and set foot on the journey to the west! Today, Zhengtu IP officially announced that it will launch a cross-border cooperation with CCTV animation "Journey to the West" to jointly create a cultural feast that combines tradition and innovation! This cooperation not only marks the in-depth cooperation between the two major domestic classic brands, but also demonstrates the unremitting efforts and persistence of the Zhengtu series on the road of promoting Chinese traditional culture. Since its birth, the Zhengtu series has been loved by players for its profound cultural heritage and diversified gameplay. In terms of cultural inheritance, the Zhengtu series has always maintained respect and love for traditional Chinese culture, and skillfully integrated traditional cultural elements into the game, bringing more fun and inspiration to players. The CCTV animation "Journey to the West" is a classic that has accompanied the growth of generations.
Honor Magic V3 debuts AI defocus eye protection technology: effectively alleviates the development of myopia
Jul 18, 2024 am 09:27 AM
According to news on July 12, the Honor Magic V3 series was officially released today, equipped with the new Honor Vision Soothing Oasis eye protection screen. While the screen itself has high specifications and high quality, it also pioneered the introduction of AI active eye protection technology. It is reported that the traditional way to alleviate myopia is "myopia glasses". The power of myopia glasses is evenly distributed to ensure that the central area of sight is imaged on the retina, but the peripheral area is imaged behind the retina. The retina senses that the image is behind, promoting the eye axis direction. grow later, thereby deepening the degree. At present, one of the main ways to alleviate the development of myopia is the "defocus lens". The central area has a normal power, and the peripheral area is adjusted through optical design partitions, so that the image in the peripheral area falls in front of the retina.
iPhone stuck in airplane mode: How to fix it
Jun 15, 2024 pm 02:16 PM
Airplane mode is very convenient in some situations. However, the same airplane mode may give you a headache if your iPhone suddenly gets stuck on it. In this article, we have designed this set of solutions to get your iPhone out of airplane mode. Quick fix – 1. Try disabling Airplane Mode directly from Control Center. 2. If you are unable to disable Airplane Mode from Control Center, you can disable Airplane Mode directly from the Settings tab – If these tips don’t work, follow the fixes below to resolve the issue. Fix 1 – Force Restart Your Device The process of force restarting your device is very simple. All you have to do is follow these step-by-step instructions. Step 1 – You can start the process by pressing and releasing the Volume Up button. step
Clear gray Safari history in iPhone: Fixes
Jun 08, 2024 pm 06:44 PM
Is the Clear History button gray in Safari on iPhone? If this is the case, you won't be able to clear history in Safari at all. Stored cookies and website data may cause unsolicited events in your browser. However, if you follow the steps below, you can easily resolve the issue and delete stored user history from Safari. Fix 1 – Disable Content Restrictions Content restrictions on iPhone may limit the correct use of Safari browser. Step 1 – Open iPhone settings. Step 2 – Next, go to Screen Time settings. Step 3 – In Screen Time settings, turn on Content & Privacy Restrictions
