Introduction Every DML transaction reads the data before it makes any changes. Not only during a SELECT query, but when you run any DML statement, insert, update, or delete, SQL Server first fetches a bunch of pages into the buffer pool locating the desired rows and changes them while synchronously writing to the transaction log […]
2021-05-10
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In this article, we examine how data changes are made against heaps.
2021-05-03
4,498 reads
In Part 1 of this series, we examine the structure of data pages and how your tables are stored on these pages.
2021-04-13
17,096 reads
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Comments posted to this topic are about the item Column Adds and Drops
I run this batch on SQL Server 2022. What happens?
ALTER TABLE dbo.Accounts ADD AccountAccessType INT GO ALTER TABLE dbo.Accounts DROP AccountAccessType GOSee possible answers