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public static string replace(string str, string str2)
{
str = str.Replace(";", str2);
str = str.Replace("&", str2);
str = str.Replace("<", str2);
str = str.Replace(">", str2);
str = str.Replace("'", str2);
str = str.Replace("--", str2);
str = str.Replace("/", str2);
str = str.Replace("%", str2);
str = str.Replace("~", str2);
str = str.Replace(",", str2);
str = str.Replace("`", str2);
str = str.Replace("!", str2);
str = str.Replace("@", str2);
str = str.Replace("#", str2);
str = str.Replace("$", str2);
str = str.Replace("^", str2);
str = str.Replace("*", str2);
str = str.Replace("(", str2);
str = str.Replace(")", str2);
str = str.Replace("+", str2);
str = str.Replace(":", str2);
str = str.Replace("<", str2);
str = str.Replace(">", str2);
str = str.Replace("?", str2);
 
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alter table ±íÃû rename column ÔÁÐÃû to ÐÂÁÐÃû
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alter table ±íÃû drop column ÁÐÃû
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