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nodeSort.c

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    • Tom Lane's avatar
      cdd5178c
      Extend the MinimalTuple concept to tuplesort.c, thereby reducing the · cdd5178c
      Tom Lane authored 
      per-tuple space overhead for sorts in memory.  I chose to replace the
previous patch that tried to write out the bare minimum amount of data
when sorting on disk; instead, just dump the MinimalTuples as-is.  This
wastes 3 to 10 bytes per tuple depending on architecture and null-bitmap
length, but the simplification in the writetup/readtup routines seems
worth it.
      cdd5178c
      History
      Extend the MinimalTuple concept to tuplesort.c, thereby reducing the
      Tom Lane authored 
      per-tuple space overhead for sorts in memory.  I chose to replace the
previous patch that tried to write out the bare minimum amount of data
when sorting on disk; instead, just dump the MinimalTuples as-is.  This
wastes 3 to 10 bytes per tuple depending on architecture and null-bitmap
length, but the simplification in the writetup/readtup routines seems
worth it.