我对SQL语句有疑问。我希望我能够以正确的方式解释它,以便你能理解它。
我有一张表格,其中包括明文,描述,零售价和销售价格。现在我只需要显示零售价和销售价格之间的差异为150欧元的记录。
所以我开始认为我能做到吗? (是的,我是SQL新手)所以:
SELECT articlecode, description, retailprice, sellingprice
FROM article
WHERE retailprice (and here I do not know).
希望你能帮助我。
答案 0 :(得分:0)
会是这样的:
SELECT articlecode, description, retailprice, sellingprice
FROM article
WHERE sellingprice-retailprice = 150
答案 1 :(得分:0)
尝试以下查询:
private async void onButtonClick(object sender, EventArgs e)
{
await GetValuesAsync();
}
private async Task GetValuesAsync()
{
string ResponseJsonString = null;
string url =
"http://myWebapp.azurewebsites.net/api/values";
using (var httpClient = new HttpClient())
{
try
{
Task<HttpResponseMessage> getResponse = httpClient.GetAsync(url);
HttpResponseMessage response = await getResponse; //Execution hangs here forever ...
ResponseJsonString = await response.Content.ReadAsStringAsync();
values = JsonConvert.DeserializeObject<string[]>(ResponseJsonString);
}
catch (Exception ex)
{
throw;
}
}
}