ASP latest SQL anti-injection filter Culvert number

sql| Anti-injection

Function Checkstr (STR)
If Isnull (STR) Then
Checkstr = ""
Exit Function
End If
STR = Replace (STR,CHR (0), "", 1,-1, 1)
str = Replace (str, "" "," "", 1,-1, 1)
str = Replace (str, "<", "<", 1,-1, 1)
str = Replace (str, ">", ">", 1,-1, 1)
str = Replace (str, "script", "script", 1,-1, 0)
str = Replace (str, "script", "script", 1,-1, 0)
str = Replace (str, "script", "script", 1,-1, 0)
str = Replace (str, "script", "script", 1,-1, 1)
str = Replace (str, "Object", "Object", 1,-1, 0)
str = Replace (str, "Object", "Object", 1,-1, 0)
str = Replace (str, "Object", "Object", 1,-1, 0)
str = Replace (str, "Object", "Object", 1,-1, 1)
str = Replace (str, applet, applet, 1,-1, 0)
str = Replace (str, applet, applet, 1,-1, 0)
str = Replace (str, applet, applet, 1,-1, 0)
str = Replace (str, applet, applet, 1,-1, 1)
str = Replace (str, "[", "[")
str = Replace (str, "]", "]")
str = Replace (str, "" "", "", 1,-1, 1)
str = Replace (str, "=", "=", 1,-1, 1)
str = Replace (str, "'", "" ", 1,-1, 1)
str = Replace (str, "select", "select", 1,-1, 1)
str = Replace (str, "Execute", "execute", 1,-1, 1)
str = Replace (str, "exec", "exec", 1,-1, 1)
str = Replace (str, "join", "join", 1,-1, 1)
str = Replace (str, "union", "union", 1,-1, 1)
str = Replace (str, "where", "where", 1,-1, 1)
str = Replace (str, INSERT, INSERT, 1,-1, 1)
str = Replace (str, "delete", "delete", 1,-1, 1)
str = Replace (str, "Update", "Update", 1,-1, 1)
str = Replace (str, "like", "like", 1,-1, 1)
str = Replace (str, "Drop", "drop", 1,-1, 1)
str = Replace (str, "create", "create", 1,-1, 1)
str = Replace (str, "rename", "Rename", 1,-1, 1)
str = Replace (str, "Count", "Count", 1,-1, 1)
str = Replace (str, "CHR", "Chr", 1,-1, 1)
str = Replace (str, "Mid", "mid", 1,-1, 1)
str = Replace (str, "truncate", "truncate", 1,-1, 1)
str = Replace (str, "nchar", "nchar", 1,-1, 1)
str = Replace (str, "char", "char", 1,-1, 1)
str = Replace (str, "ALTER", "Alter", 1,-1, 1)
str = Replace (str, "cast", "cast", 1,-1, 1)
str = Replace (str, "exists", "exists", 1,-1, 1)
STR = Replace (STR,CHR), <br>, 1,-1, 1)
Checkstr = Replace (Str, "'", "" ", 1,-1, 1)
End Function