================================================================================================ Add 2 columns and drop 2 columns at 3 different depths of nesting ================================================================================================ OpenJDK 64-Bit Server VM 1.8.0_282-b08 on Linux 5.4.0-1043-azure Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz 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 ------------------------------------------------------------------------------------------------------------------------------------------------- To non-nullable StructTypes using performant method 4 4 1 0.0 Infinity 1.0X To nullable StructTypes using performant method 3 3 0 0.0 Infinity 1.1X To non-nullable StructTypes using non-performant method 79 80 1 0.0 Infinity 0.0X To nullable StructTypes using non-performant method 2263 2290 39 0.0 Infinity 0.0X ================================================================================================ Add 50 columns and drop 50 columns at 100 different depths of nesting ================================================================================================ OpenJDK 64-Bit Server VM 1.8.0_282-b08 on Linux 5.4.0-1043-azure Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz 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 ----------------------------------------------------------------------------------------------------------------------------------------------------- To non-nullable StructTypes using performant method 3243 3258 21 0.0 Infinity 1.0X To nullable StructTypes using performant method 3184 3192 10 0.0 Infinity 1.0X