--鎖表（其它事務不能讀、更新、刪除）
begin tran
select * from 《表名》 with(tablockx);
waitfor delay '00:00:20'
commit tran
--鎖表（其它事務只能讀，不能更新、刪除）
begin tran
select * from 《表名》 with(holdlock);
waitfor delay '00:00:20'
commit tran
--鎖部分行
begin tran
select * from 《表名》 with(xlock) where id in ('81a2edf9-d1fd-4037-a17b-1369fd3b169b');
waitfor delay '00:01:20'
commit tran
-- 檢視鎖狀態
select spid,
blocked,
loginame,
last_batch,
status,
cmd,
hostname,
program_name
from sys.sysprocesses
where spid in (select blocked from sys.sysprocesses where blocked <> 0)
or (blocked <> 0)
-- 終止程序
declare @spid int
set @spid = 83 --鎖表程序
declare @sql varchar(1000)
set @sql='kill '+cast(@spid as varchar)
exec(@sql)
---- 檢視語句-正在執行
select [spid] = session_id ,
ecid ,
[database] = db_name(sp.dbid) ,
[user] = nt_username ,
[status] = er.status ,
[wait] = wait_type ,
[individual query] = substring(qt.text,
er.statement_start_offset / 2,
( case when er.statement_end_offset = -1
then len(convert(nvarchar(max), qt.text))
* 2else er.statement_end_offset
end - er.statement_start_offset )
/ 2) ,
[parent query] = qt.text ,
program = program_name ,
hostname ,
nt_domain ,
start_time
from sys.dm_exec_requests er
inner join sys.sysprocesses sp on er.session_id = sp.spid
where session_id > 50 -- ignore system spids.
and session_id not in ( @@spid ) -- ignore this current statement.
order by 1 ,2
-- 檢視語句執行過資訊
select *
from sys.sysprocesses
where spid in (select blocked from sys.sysprocesses where blocked <> 0)
or (blocked <> 0) ;
select top 1000
st.text as '執行的sql語句',
qs.execution_count as '執行次數',
qs.total_elapsed_time as '耗時',
qs.total_logical_reads as '邏輯讀取次數',
qs.total_logical_writes as '邏輯寫入次數',
qs.total_physical_reads as '物理讀取次數',
qs.creation_time as '執行時間' ,
qs.*
from sys.dm_exec_query_stats qs
sys.dm_exec_sql_text(qs.sql_handle) st
where qs.creation_time between '2016-08-05 15:00:00' and '2016-08-05 17:00:00'
order by qs.total_elapsed_time desc
--kill當前庫所有程序
declare @sql nvarchar(max),@currdbname nvarchar(100)
set @currdbname='db1' --如果在當前庫上執行，可改為: set @currdbname = db_name()
while exists( select 1 from sys.sysprocesses where dbid=db_id(@currdbname) and spid!=@@spid )
begin
select top 1 @sql='kill '+cast(spid as nvarchar(50)) from sys.sysprocesses where dbid=db_id(@currdbname) and spid!=@@spid
exec (@sql)
end
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