SQL Server Azure SQL 数据库 Azure SQL 托管实例 Azure Synapse Analytics Microsoft Fabric SQL 数据库 根据与源表联接的结果,对目标表进行插入、更新或删除操作。 例如,根据与另一个表的区别,在一个表中插入、更新或删除行,从而同步两个表。 备注
SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics 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, up...
在SQL Server Integration Services 的当前版本中,执行 SQL 任务中的 SQL 语句可以包含 MERGE 语句。 使用此 MERGE 语句可以在一个语句中完成多个 INSERT、UPDATE 和 DELETE 操作。 若要在包中使用 MERGE 语句,请执行下列步骤: 创建用于将源数据加载、转换和保存到临时表的数据流任务。 创建包含 MER...
图12.哈希匹配的第一阶段 图12中,将输入源中的每一个条目经过散列函数的计算都放到不同的Hash Bucket中,其中Hash Function的选择和Hash Bucket的数量都是黑盒,微软并没有公布具体的算法,但我相信已经是非常好的算法了。另外在Hash Bucket之内的条目是无序的。通常来讲,查询优化器都会使用连接两端中比较小的哪个输...
Assume that you have a merge replication environment together with a custom stored procedure conflict resolver in Microsoft SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, or SQL Server 2014. In this sit...
(1) Referred to as "dynamic snapshot" in SQL Server 2000 Books Online. For more information, see the section "Sending and Receiving Only the Data Required by the Application" in this paper. 2 The difference in size is due to a set of batching procedures that SQL Server 2005 creates. Th...
When you run a query by using the MERGE statement in Microsoft SQL Server, you notice that the MERGE statement fails and returns an access violation error at BTreeRow::DisableAccessReleaseOnWait. Status Microsoft has confirmed that ...
(in which case this column is used). If the table is dropped from the publication, therowguidcolumn is removed; if an existing column was used for tracking, the column is not removed. A filter must not include therowguidcolused by replication to identify rows. Thenewid()function is ...
In this article How Partition Validation Works See Also Applies to: SQL ServerWhen you define a parameterized row filter for a merge publication, you use a function that references Subscriber information, such as the Subscriber's login name. By default, replication validates Subscriber ...
| rowset_function [ [ AS ] table_alias ] [ ( bulk_column_alias [ ,...n ] ) ] | user_defined_function [ [ AS ] table_alias ] | OPENXML <openxml_clause> | derived_table [ AS ] table_alias [ ( column_alias [ ,...n ] ) ] ...