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摘要 如果启用了某些扩展事件，数据可以通过网络发送到可能导致代码针对 SQL Server 进程运行的受影响 Microsoft SQL Server 实例。 若要了解有关此漏洞的更多信息，请参阅 CVE-2021-1636。 SQL Server 组件在此安全更新中更新到了以下内部版本中。

Symptom Anta att du har en extern PolyBase-tabell i SQL Server 2019 med en kolumn av typen TID som pekar på en Oracle-, Mongo DB-, Teradata- eller allmän ODBC-extern datakälla. Du försöker läsa från den externa tabellens TID-kolumn. I det här scenariot ser du att null-värden i kolumnen ersätts med felaktiga data.

This article explains how to create and run an append query. You use an append query when you need to add new records to an existing table by using data from other sources. If you need to change data in an existing set of records, such as updating the value of a field, you can use an update query. If you need to make a new table from a selection of data, or to merge two tables into one new ...

Provides information about how to download service packs for SQL Server 2014.