master .github docker py_image_dedup tests .dockerignore .gitignore Dockerfile LICENSE MANIFEST.in README.md docker-compose.yml example.py poetry.lock py_image_dedup_reference.yaml pyproject.toml pytest.ini Latest commit dependabot[bot]
Result set Thesp_lockresult set contains one row for each lock held by the sessions specified in the@spid1and@spid2parameters. If neither@spid1nor@spid2is specified, the result set reports the locks for all sessions currently active in the instance of the Database Engine. ...
RestoreMasterKeyStatement RestoreOption RestoreOptionKind Restoreservicemasterkeystatement RestoreStatement RestoreStatementKind ResultColumnDefinition ResultSetDefinition ResultSetsExecuteOption ResultSetsOptionKind ResultSetType RetentionDaysAuditTargetOption RetentionPeriodDefinition ReturnStatement Ripristina stato Revoke...
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2 UPDATE dbo.Person SET NAME='aaaaa' WHERE ID=6 3 4 BEGIN TRAN 5 UPDATE dbo.Person WITH(PAGLOCK) SET NAME='bbbbb' WHERE ID=4 从上面两个图中,你应该可以看到,原来附加到RID上面的U锁,由于PagLock的提升,现在要附加到Page上面了,这个就是所谓的数据页锁。
"bit-set 0.8.0", "bitflags 2.6.0", "cfg_aliases 0.1.1", "codespan-reporting", "hexf-parse", "indexmap", "log", "rustc-hash", "spirv", "termcolor", "thiserror", "unicode-xid", ] [[package]] name = "ndk" version = "0.9.0" source = "registry+ht...
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MySQL InnoDB集群紧密集成了MySQL Servers with Group Replication,MySQL Router,和MySQL Shell,所以不必依赖于外部工具,脚本或其他部件。 另外它利用了现有的MySQL特性,如:InnoDB, GTIDs, binary logs, multi-threaded slave execution, multi-source replication and Performance Schema。可以在五分钟内利用MySQL Shell中...
TheLock:Timeoutevent class indicates that a request for a lock on a resource, such as a page, has timed out because another transaction is holding a blocking lock on the required resource. Time-out is determined by the @@LOCK_TIMEOUT system function and can be set with the SET LOCK_TIM...
create table t1(a int primary key, b char(500)); declare @i int, @tcnt1 int, @tcnt2 int; set @i=1; set @tcnt1=0; set @tcnt2=0; insert into tcnt values (0,0); while (@tcnt2<10000) begin select @tcnt2=count(*) from t1 with (NOLOCK); ...