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.

dropping observations if 2 strings are empty
dropping observations if 2 strings are empty

Hi

I want to drop all observations which don't have date in 2 string variables:

for example
if A = empty and B=empty --> drop
if A or B != empty --> dont drop

I tried drop if A == "" and B== "" but it states a invalid and operation

i cant include a dataex because the characters in one of the variables are too long.

Thanks in advance!

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