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SET TRANSACTION ISOLATION LEVEL REPEATABLE READ
begin tran
select * from tablename with (rowlock) where id=3
waitfor delay '00:00:05'
commit tran
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update tablename set colname='10' where id=3 --ÔòÒªµÈ´ý5Ãë
update tablename set colname='10' where id<>3 --¿ÉÁ¢¼´Ö´ÐÐ
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SELECT * from table WITH (HOLDLOCK)
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SELECT * from table WITH (HOLDLOCK)
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SELECT * from table WITH (TABLOCKX)
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SQL code:
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SQL code:
declare @cnt int
select @cnt=count(1) from TableTest
if(@cnt==0)
insert into TableTest values(1,'abc')
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