/*查询哪些日志记录会导致如此的急剧变化。*/

select @@SPID,Operation,dblog.[Transaction Name],[Transaction ID],AllocUnitName,[Server UID],dblog.SPID,dblog.[Begin Time],

dblog.[AllocUnitName]

,dblog.[RowLog Contents 1]

from fn_dblog(null, null) dblog

WHERE dblog.Begin Time >= '2020/01/01'

/*根据某个SPID，session_id查询对应的执行sql语句*/

select er.session_id,CAST(csql.text AS varchar(255)) AS CallingSQL

from master.sys.dm_exec_requests er WITH (NOLOCK)

 CROSS APPLY MASTER.sys.fn_get_sql (er.sql_handle) csql

where er.session_id =SPID