column statistics是什么意思

column statistics
列统计信息；栏统计；列统计量
例句
1.Any existing fragments with out-of-date column statistics will also be rebuilt at this time.
任何列统计过时的现有片段也将在此时重新构建.
2.The Missing Column Statistics event class indicates that column statistics that could have been useful for the optimizer are not available.
MissingColumnStatistics事件类指示原本对优化器有帮助的列统计信息不可用.
3.For more information about column statistics, see Index Statistics.
有关列统计信息的详细信息,请参阅索引统计信息.