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rowlock    
n. 桨架;桨叉

桨架;桨叉

rowlock
n 1: a holder attached to the gunwale of a boat that holds the
oar in place and acts as a fulcrum for rowing [synonym: {peg},
{pin}, {thole}, {tholepin}, {rowlock}, {oarlock}]


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英文字典中文字典相关资料:


  • Table Hints (Transact-SQL) - SQL Server | Microsoft Learn
    Lock hints ROWLOCK, UPDLOCK, and XLOCK that acquire row-level locks might place locks on index keys rather than the actual data rows For example, if a table has a nonclustered index, and a SELECT statement using a lock hint is handled by a covering index, a lock is acquired on the index key in the covering index rather than on the data row in
  • SQL Server When to use RowLOCK, UPDLOCK etc - Microsoft Q A
    select * from employees with (rowlock) where employeeid=3 waitfor delay '00:00:25' commit tran 1) i saw rowlock block second transaction without UPDLOCK hint and i also do not set isolation too but still code works 2) sir you said ROWLOCK HINT is useless without UPDLOCK hint but in my case ROWLOCK works fine without UPDLOCK
  • What is ROWLOCK and what it does - Microsoft Q A
    By itself, ROWLOCK does not cause anything to be locked, and it does not control when the locks are released The effect is that if anything has to be locked (for other reasons unrelated to the presence of the ROWLOCK hint) then these locks will be kept at row level and not escalated to a higher level
  • テーブル ヒント (Transact-SQL) - SQL Server | Microsoft Learn
    rowlock、paglock、または tablock と組み合わせて指定すると、排他ロックは適切な粒度レベルに適用されます。 注釈 テーブルがクエリ プランによってアクセスされない場合、テーブル ヒントは無視されます。
  • deadlock - How to force SQL server to use row locking for specific . . .
    Lock hints ROWLOCK, UPDLOCK, AND XLOCK that acquire row-level locks may place locks on index keys rather than the actual data rows For example, if a table has a nonclustered index, and a SELECT statement using a lock hint is handled by a covering index, a lock is acquired on the index key in the covering index rather than on the data row in
  • What is the difference between ROWLOCK, UPDLOCK and HOLDLOCK
    Use of ROWLOCK The ROWLOCK row-level lock ensures that when the user obtains the updated row, it will not be modified by other users during this time Therefore, row-level locks can ensure data consistency and improve the concurrency of data operations ROWLOCK tells SQL Server to only use row-level locks
  • Transaction locking and row versioning guide - SQL Server
    In contrast, when ROWLOCK is used, all deleted rows are marked only as deleted; they are removed from the index page later using a background task Delete operation with optimized locking When deleting a row within a transaction, the row and page locks are acquired and released incrementally, and not held for the duration of the transaction
  • トランザクションのロックおよび行のバージョン管理ガイド - SQL Server | Microsoft Learn
    対照的に、rowlock を使用した場合、削除対象のすべての行には削除のマークが付けられるだけです。これらは、後でバックグラウンド タスクによってインデックス ページから削除されます。
  • Difference between ROWLOCK and UPDLOCK - Microsoft Q A
    ROWLOCK tells SQL Server to only use row-level locks UPDLOCK is only for a row of records in the table to lock to prevent other operations from updating the row's data At this point, we must have already understood that UPDLOCK is the row level
  • ROWLOCK in sql server - Database Administrators Stack Exchange
    See Understanding Locking in SQL Server to understand why a ROWLOCK update must acquire hierarchical intent locks, for an explanation of the Process 54 acquiring IU lock on PAGE: 16:1:196 (class bit0 ref1) result: OK





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