Add MDF database file to SQL Server database, and the error is reported

Right click to add the database error , Prompt no transaction log file ,

First step , take mdf file , Put it under the installation folder, as shown in the above figure

The second step , In the system database ,master Click query below , Enter the following statement , And perform , Don't worry about the operation error , As long as the arrow points ldf The file prompt has been created ：
among dbname Is what you want to add mdf The database name of ,pysname Is your first step to store mdf Path to file

 

USE  MASTER
EXEC sp_detach_db @dbname = "MonitorHistory2021M8D30h5m30s1.mdf"
EXEC sp_attach_single_file_db @dbname = "MonitorHistory2021M8D30h5m30s1.mdf",
     @physname = "F:\ Guyang Anshun West \ Supplementary data \2021 year 08 month CMS data \08 month CMS data \MonitorHistory2021M8D30h5m30s1.mdf"

The third step , Refresh , You can see the corresponding you added mdf The database of