Why DataFrames v.0.21.2 (julia v1.4.2) requires more memory than the previous version

BMval June 11, 2020, 1:02am 11

much of columns is int64.

Oh, I understand. csv has a char, int64 is twice large.!!!

Is it possible to force use Int32, instead of Int64

Topic		Replies	Views
CSV.write("*.txt",DataFrame) ReadOnlyMemoryError() General Usage dataframes	14	1045	January 9, 2020
CSV.read extremely slow wrt readtable Data	14	3655	July 27, 2018
Reading huge csv files Data	5	4088	January 19, 2019
CSV mmap error when parsing large file General Usage package	6	2417	May 25, 2019
Reading Data Is Still Too Slow Data	35	8900	August 2, 2019