   err <span class="token operator">:=</span> <span class="token function">ArticleQuery</span><span class="token punctuation">(</span>dao<span class="token punctuation">)</span><span class="token punctuation">.</span>
        <span class="token function">AndWhere</span><span class="token punctuation">(</span>dbx<span class="token punctuation">.</span>HashExp<span class="token punctuation">{</span><span class="token string">"id"</span><span class="token punctuation">:</span> id<span class="token punctuation"