unique_subquery 与 eq_ref 类似,但是是包含 IN 子查询的情况下会出现。 34010 SQL中GROUP BY语句介绍 本文主要介绍 SQL(Structured Query Language)中 GROUP BY 语句的相关知识,同时通过用法示例介绍 GROUP BY 语句的常见用法。...,来介绍 GROUP BY 语句的常见用法。...2.1 结合聚合函数 首先,不使用聚合函数,...
SQL database in Microsoft Fabric The MERGE statement runs insert, update, or delete operations on a target table from the results of a join with a source table. For example, synchronize two tables by inserting, updating, or deleting rows in one table based on differences found in the other...
Specifies the number or percentage of rows that are affected. expression can be either a number or a percentage of the rows. The rows referenced in the TOP expression are not arranged in any order. For more information, seeTOP (Transact-SQL). The TOP clause is applied after the entire sour...
Merge Join Showplan 运算符 Merge Join运算符执行内部联接、左外部联接、左半部联接、左反半部联接、右半部联接、右反半部联接和联合逻辑操作。 在Argument列中,如果操作执行一对多联接,则Merge Join运算符将包含 MERGE:() 谓词;如果操作执行多对多联接,则该运算符将包含 MANY-TO-MANY MERGE:() 谓词。Argument...
適用於:SQL Server MSmerge_genhistory數據表包含訂閱者知道的每個世代一個數據列(在保留期間內)。 它用來避免在交換期間傳送一般世代,以及重新同步處理從備份還原的訂閱者。 此數據表會儲存在發行集和訂閱資料庫中。 展開資料表 資料行名稱資料類型描述 guidsrc uniqueidentifier 訂閱者端產生所識別之變更的全域...
Planner runtime: 1.330 ms Unique SQL Id: 2643260924 (54 rows) 此语句的执行特征如下 UNION ALL 上面分支关联时,只读取public.t上的非更新列列a和d UNION ALL 下面分支关联时,只用读取public.t上的关联列列a INSERT下面查询语句各个部分的结果集的宽度都和表tmp、t的宽度基本保持一致...
Gilt für:SQL ServerDie MSmerge_errorlineage Tabelle enthält Zeilen, die beim Abonnenten gelöscht wurden, deren Löschvorgang jedoch nicht an den Herausgeber weitergegeben wird. Diese Tabelle wird in der Veröffentlichungs- und in der Abonnementdatenbank gespeichert....
MSmerge_agents (Transact-SQL)Članak 2023-03-01 7 saradnik/a Povratne informacije Applies to: SQL ServerThe MSmerge_agents table contains one row for each Merge Agent running at the Subscriber. This table is stored in the distribution database....
In SQL Server 2008, you can perform insert, update, or delete operations in a single statement using the MERGE statement. The MERGE statement allows you to join a data source with a target table or view, and then perform multiple actions against the target based on the results of that ...
Msg 20628, Level 16, State 1, Procedure sp_MScreatemergedynamicsnapshot, Line 203 Failed to generate dynamic snapshot. Note This issue occurs when theagent_idvalue exceeds 99,999 in the MSdynamicsnapshotjobs table. Cause This ...