--查看當(dāng)前的存放位置 select database_id,name,physical_name AS CurrentLocation,state_desc,size from sys.master_files  where database_id=db_id(N'數(shù)據(jù)庫名');  --修改文件的存放位置下次啟動生效 --testDb為數(shù)據(jù)庫名， alter database 數(shù)據(jù)庫名 modify file ( name = 文件名(不包含后綴), filename = '文件存儲路徑'); alter database 數(shù)據(jù)庫名 modify file ( name = 文件名(不包含后綴), filename = '文件存儲路徑'); eg.   alter database testDb modify file ( name = testDb, filename = 'G:/SQL_DATA/testDb/testDb.mdf');   alter database testDb modify file ( name = testDb_log, filename = 'G:/SQL_DATA/testDb/testdb_log.ldf');  --修改默認(rèn)的數(shù)據(jù)庫文件存放位置（即時(shí)生效） EXEC xp_instance_regwrite  @rootkey='HKEY_LOCAL_MACHINE',  @key='Software/Microsoft/MSSQLServer/MSSQLServer',  @value_name='DefaultData',  @type=REG_SZ,  @value='E:/MSSQL_MDF/data'  GO  --修改默認(rèn)的日志文件存放位置<span style="font-family: Arial, Helvetica, sans-serif;">（即時(shí)生效）</span> EXEC master..xp_instance_regwrite  @rootkey='HKEY_LOCAL_MACHINE',  @key='Software/Microsoft/MSSQLServer/MSSQLServer',  @value_name='DefaultLog',  @type=REG_SZ,  @value='E:/MSSQL_MDF/log'  GO