Hi, Statalist:
I have two datasets A and B. I need to create a dummy variable in A to
tell me whether the value of a string variable (say lic_no ) in A
matches any value in the variable of psycho_lic_no in B. Simply put, I
want to see whether the value for each obs. in A is on a list. But as
the list (the value of psycho_lic_no in B) is so long (over 10000), it
is inconvenient to copy and paste all the values, and compare them
with the lic_no one by one.
Any good way to make the job easier? Thank you.
Best
Gao
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