sqlserver建立索引時的include--覆蓋索引

  執行一個sqlhtml select id,name from s_student where class_id = '1' 對於sqlserver 2000. 若是使用覆蓋索引, 能夠創建索引sql CREATE NONCLUSTERED INDEX IX_CLASSID_1 ON dbo.s_student (class_id,id,name) 若是有查詢是 select xx

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