How to Think Like the SQL Server Engine: Should Columns Go In the Key or the Includes?
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In our last episode, in between crab rangoons, I had you create either one of these two indexes: Transact-SQL CREATE INDEX IX_LastAccessDate_Id_Includes ON dbo.Users(LastAccessDate, Id) INCLUDE (DisplayName, Age); GO CREATE INDEX IX_LastAccessDate_Id_DisplayName_Age ON dbo.Users(LastAccessDate, Id, DisplayName, Age); GO 1234567 CREATE INDEX IX_LastAccessDate_Id_Includes ON dbo.Users(LastAccessDate, Id) INCLUDE (DisplayName, Age);GOCREATE INDEX IX_LastAccessDate_Id_DisplayName_Age ON dbo.Users(LastAccessDate, Id, DisplayName, Age);GO And I said…
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