unique URL"s as ID in mysql table

hello, i have a mysql database that stores URL's in a table now i
would like to change the schema so that the URL's are unique so my
question is: is it appropriate to use URL's as a unique IDs if not
what are the alternatives?

any advise much appreciated

norman

--=20
˙uʍop ǝpısdn p,uɹnʇ pןɹoʍ =C7=
É¥Ê=87 ǝǝs noʎ 'ʇuǝɯɐן s=
ǝɯıʇ ǝɥʇ puɐ 'ʇuǝʇuo=
ɔ
ǝq s,ʇǝן ʇǝʎ
%>>> "".join( [ {'*':'@','^':'.'}.get(c,None) or
chr(97+(ord(c)-83)%26) for c in ",adym,*)&uzq^zqf" ] )

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