G-2180: Never use quoted identifiers.

Major

Maintainability

Reason

Quoted identifiers make your code hard to read and maintain.

Example (bad)

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declare
   "sal+comm" integer;
   "my constant" constant integer := 1;
   "my exception" exception;
begin
   "sal+comm" := "my constant";
exception
   when "my exception" then
      null;
end;
/

Example (good)

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declare
   l_sal_comm     integer;
   k_my_constant constant integer := 1;
   e_my_exception exception;   
begin
   l_sal_comm := k_my_constant;
exception
   when e_my_exception then
      null;
end;
/