It is an unsolved problem using batched queries in compressed databases to construct an adaptive histogram to optimize query processing or answer queries approximately.
在压缩数据库中利用查询处理的特点构建自适应直方图以便于查询优化或近似回答查询是尚待解决的问题。
It is an unsolved problem using batched queries in compressed databases to construct an adaptive histogram to optimize query processing or answer queries approximately.
在压缩数据库中利用查询处理的特点构建自适应直方图以便于查询优化或近似回答查询是尚待解决的问题。
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