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PARALLEL BUILD OF NON-PARTITIONED JOIN HASH TABLES AND NON-ENFORCED N:1 JOIN HASH TABLES
PARALLEL BUILD OF NON-PARTITIONED JOIN HASH TABLES AND NON-ENFORCED N:1 JOIN HASH TABLES
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机译:非拼版联接哈希表和非强制N:1联接哈希表的并行构建
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摘要
A method for creating a compact hash table includes a thread executing using a processor for scanning a subset of keys and values, and for each key, performing a hash operation and inserting hashed keys into a bitmap structure. Cumulative population counts of keys and values are determined within the bitmap. The method repeats scanning the subset of the keys and values. The keys and values are inserted into a compacted array using the cumulative population counts.
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