This portion of the data block contains information about the actual rows in the block (including addresses for each row piece in the row data area).
这部分的数据块包含了有关实际的行的信息(包括行数据区域每个行片段的地址)。
This portion of the data block contains information about the actual rows in the block (including addresses for each row piece in the row data area).
数据块的这部分包涵了关于数据块中拥有行的表的信息。
As a result, the engine needed to read many rows of data and apply the final filters using the actual row data, even though indexes of the filter columns were available.
结果，该引擎必须读取很多数据行然后使用实际行数据应用最终过滤，即使过滤列的索引可用。
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