oracle - Where to look on error SP2-0317 Expected symbol name is missing -


i have oracle procedure , getting error. when online, following helpful message:

cause: sql*plus expecting symbol, not specified.

actions: check syntax of command used correct options.

those actions pretty nebulous. check symbols, where? begin resolve error?

(i've found answer, because appears have caught others on team too, wanted post question , answer here. post code, when still looking, didn't know in code look, couldn't cut down manageable size, , posting proprietary code not appropriate. plus, turned out problem in comments, not in code @ all.)

may have comments or may output string contain '&' sign.

'&'should followed substitution variable in sql* plus


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