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Add 2 columns and drop 2 columns at 3 different depths of nesting
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OpenJDK 64-Bit Server VM 17.0.5+8 on Linux 5.15.0-1023-azure
Intel(R) Xeon(R) Platinum 8370C CPU @ 2.80GHz
Add 2 columns and drop 2 columns at 3 different depths of nesting:  Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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To non-nullable StructTypes using performant method                            3              4           2          0.0      Infinity       1.0X
To nullable StructTypes using performant method                                2              3           1          0.0      Infinity       1.3X
To non-nullable StructTypes using non-performant method                       47             49           4          0.0      Infinity       0.1X
To nullable StructTypes using non-performant method                         1646           1657          15          0.0      Infinity       0.0X


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Add 50 columns and drop 50 columns at 100 different depths of nesting
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OpenJDK 64-Bit Server VM 17.0.5+8 on Linux 5.15.0-1023-azure
Intel(R) Xeon(R) Platinum 8370C CPU @ 2.80GHz
Add 50 columns and drop 50 columns at 100 different depths of nesting:  Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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To non-nullable StructTypes using performant method                             2685           2708          33          0.0      Infinity       1.0X
To nullable StructTypes using performant method                                 2547           2668         172          0.0      Infinity       1.1X


