Specialized on Data processing, Data management Implementation plan, Data Collection tools - electronic and paper base, Data cleaning specifications, Data extraction, Data transformation, Data load, Analytical Datasets, and Data analysis. BJ Data Tech Solutions teaches on design and developing Electronic Data Collection Tools using CSPro, and STATA commands for data manipulation. Setting up Data Management systems using modern data technologies such as Relational Databases, C#, PHP and Android.
Tuesday, January 25, 2022
Fastest code for finding unique values
I have a dataset of one million observation and have around 200 variables. I am struggling with finding a fastest way to count unique values in each variables. Any suggestion ? Thank you for your consideration.
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