data distribution path

常见例句

Without column data-value distribution information in the catalog, DB2 will assume an even distribution of values, which may lead the optimizer to a sub-optimal access path.
如果编目中没有列数据值分布信息，DB2 就会假设值是均匀分布的，这可能导致优化器选择非最优的访问路径。
Without correct column distribution statistics, DB2 may not have enough information to make the best choice when choosing an access path to the data—especially if data is heavily skewed.
在选择数据的访问路径时，如果没有正确的列分布统计数据，DB2 可能没有足够的信息来做出最佳的选择，尤其是如果数据出现严重误差。