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projection on wide table
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OpenJDK 64-Bit Server VM 11.0.10+9-LTS on Linux 5.4.0-1043-azure
Intel(R) Xeon(R) CPU E5-2673 v3 @ 2.40GHz
projection on wide table:                 Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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split threshold 10                                 3882           3963          54          0.3        3702.2       1.0X
split threshold 100                                1810           1821           8          0.6        1726.1       2.1X
split threshold 1024                               1435           1457          47          0.7        1368.3       2.7X
split threshold 2048                               1357           1369          13          0.8        1294.3       2.9X
split threshold 4096                               1902           1921          24          0.6        1814.1       2.0X
split threshold 8192                               2700           2719          32          0.4        2574.7       1.4X
split threshold 65536                             26623          26688         125          0.0       25389.7       0.1X