為什么非聚集索引列仍進行索引掃描而不是索引查找 [英]Why does nonclustered index column still do index scan instead of index seek
在本演示中,我應該在每列上創建一個索引還是僅在一個非聚集索引上創建索引(Index Scan,Seek) [英]In this demo,should I create a index on each column or just one Nonclustered index (Index Scan、Seek)