The UTL_INADDR package was introduced in Oracle 8.1.6 to provide a means of retrieving host names and IP addresses of remote hosts from PL/SQL.
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Making HTTP requests from PL/SQL is fairly simple, using the supplied package UTL_HTTP.
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Personally I'd use CHR() to identify the nul values. A nul is an ASCII 0 and CHR() will return the character representation of the number you pass in.
If you see some interesting results from your location, or if you think that some other hosts should be recommended instead of
ascii(string) — возвращает код первого символа, эта функция обратна функции CHR; chr(x) — возвращает символ с номером х, в MySQL это функция char; length(string) — возвращает длину строки
The Oracle CHR function, as well as the ASCII, NCHR and ASCIISTR functions are for performing string manipulation.
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