BJ Data Tech Solution

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.

alternative to keep if for a large list of firm id s
alternative to keep if for a large list of firm id s

Hi all,

I have a list of firm ids that contains 17,000 firm ids. I have a big dataset which contains over 5 million observations of an even bigger set of firm ids (Dataset A). For dataset A, I want to only keep the firm ids that are mentioned in my list of firm ids (or drop the firm ids that aren't in the list). Can you please help me with this?

Thank you.

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