While I disagree with your evaluation of the information as "wrong", I accept the point that SQL usually requires single-quoted literals, and placeholders are good.

Until O.P has comments otherwise, I presume the issue is resolved, and we can avoid unnecessary debate and contention. I understand what you meant, and agree with your recommendation. My disagreement with your evaluation is irrelevant and non-productive, but it is there for the record. "Wrong" unfortunately has an accusatory quality, and invokes an emotional response. May I gently suggest that when you express disagreement, to please consider using something less potentially inflammatory , unless , of course, the issue is blatant or egregiously misrepresented.