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Hi,I'm Zoey.I've reviewed your post. Please be patient as I may need to research for you, and it also takes time to compose and type a reply.
It's not unusual for a prosecution witness, especially a police officer, to testify to facts that fit the prosecution's case, whether his memory is faulty or he's deliberately lying. Regardless of why the testimony is inaccurate, the matter is addressed on cross-examination, where a lawyer tries to elicit different facts so that he can argue to the judge or jury in his summation that the officer's testimony should not be believed.
If that doesn't work, you can get convicted, which is what happened to you. The finder of fact chose to believe the officer as to your having been drunk at the time of your arrest. All you can do then would be to appeal the case on the grounds that your lawyer provided ineffective assistance by failing to aggressively cross-examine the officer whose testimony convicted you.
Just checking in to see if you need more help or any clarification of my answer. If so, please reply here on this question thread.