pine-script - The way to download equity prices systematically by pine-script

Question

Is it possible to downalod equity prices for several tickers like :

def download(tickers):
    for ticker in tickers:
        file_name = ticker + ".csv"
        downalod_eq_price(ticker, "1D", filename)

by using pine-script? I'm a begginer of pine-script, and afraid of misunderstanding the concept of pine-script.
Is this a language only for analyzing a single name target?(e.g. USD/JPY or AAPL)
Generally, is it impossible to deal with several tickers in one pine-script?(e.g. calculate a correlation coefficient between AAPL & AMZN)