摘要：
A table scan is where the table is processed row by row from beginning to end. An index scan is where the index is processed row by row from beginning to end. If the index is a clustered index then ... 阅读全文
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摘要：
A table scan is where the table is processed row by row from beginning to end. An index scan is where the index is processed row by row from beginning to end. If the index is a clustered index then ... 阅读全文
|