st: Merge Panel Data with time Series

["Thomas Erdmann" <tom.erdmann@web.de>]

Hi, 

I have panel data for companies. Now I would like to add some macroeconomic
data like e.g. interest rate spreads, which are independent of the firm ids.

Just wondering if there's another way to do this instead of merging the data
by the time-id only i.e.

Use panel.dta
Sort year
Merge year using timeseries.dta


- Tom

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