sqlserver字符串修改
declare @level varchar(200) declare @level_1 varchar(200) set @level ='1|0#1#2#3' set @level_1='1|0#3' 修改字符串set @level='1|0#1#3''或者set @level='1|0#1#2#3,2|0#1' @level_1的值不變, 如果修改字符串set @level='1|0#1'則@level_1='1|0', 或
declare @level varchar(200)
declare @level_1 varchar(200)
set @level ='1|0#1#2#3'
set @level_1='1|0#3'
修改字符串set @level='1|0#1#3''或者set @level='1|0#1#2#3,2|0#1'
@level_1的值不變,
如果修改字符串set @level='1|0#1'則@level_1='1|0',
或者 set @level='2|0#1'則@level_1=''
即字符串二中的值必須是字符串一中有,如果字符串一沒有則字符串二沒有,但字符串一中有但字符二中不一定有

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. First open DingTalk. 2. Open the group chat and click the three dots in the upper right corner. 3. Find my nickname in this group. 4. Click to enter to modify and save.

For objects with the same name that already exist in the SQL Server database, the following steps need to be taken: Confirm the object type (table, view, stored procedure). IF NOT EXISTS can be used to skip creation if the object is empty. If the object has data, use a different name or modify the structure. Use DROP to delete existing objects (use caution, backup recommended). Check for schema changes to make sure there are no references to deleted or renamed objects.

The import steps are as follows: Copy the MDF file to SQL Server's data directory (usually C:\Program Files\Microsoft SQL Server\MSSQL\DATA). In SQL Server Management Studio (SSMS), open the database and select Attach. Click the Add button and select the MDF file. Confirm the database name and click the OK button.

When the SQL Server service fails to start, here are some steps to resolve: Check the error log to determine the root cause. Make sure the service account has permission to start the service. Check whether dependency services are running. Disable antivirus software. Repair SQL Server installation. If the repair does not work, reinstall SQL Server.

To view the SQL Server port number: Open SSMS and connect to the server. Find the server name in Object Explorer, right-click it and select Properties. In the Connection tab, view the TCP Port field.

SQL Server database files are usually stored in the following default location: Windows: C:\Program Files\Microsoft SQL Server\MSSQL\DATALinux: /var/opt/mssql/data The database file location can be customized by modifying the database file path setting.

If you accidentally delete a SQL Server database, you can take the following steps to recover: stop database activity; back up log files; check database logs; recovery options: restore from backup; restore from transaction log; use DBCC CHECKDB; use third-party tools. Please back up your database regularly and enable transaction logging to prevent data loss.

If the SQL Server installation fails, you can clean it up by following these steps: Uninstall SQL Server Delete registry keys Delete files and folders Restart the computer
