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What about 'sort -u' ?
by enigmo 14y ago
What about 'sort -u' ?
- stevvooe 14y agoI'm not sure. I haven't closely studied the difference between each algorithm. My guess would be that sort -u would perform better as the data set gets larger with a good block size setting because it does do an external sort. Cardinality would also affect the performance. If the unique set handily fits in memory, an external sort on a large data set wouldn't be very efficient.