同一张表的并集后的两个值之和

Question

这是我的查询

private void TransportValueEvent_Click(object sender, EventArgs e)
{
    if (!string.IsNullOrWhiteSpace(textBox4.Text))
    {
        (sender as TextBox).Text = textBox4.Text;
    }
}

我的输出是：

如何将这两个重复的值合并为一个。

Answer 1

如果您只需要通过“ location_description”字段获取记录计数，则只能使用不使用联合的分组

SELECT location_description AS Crimes,
       COUNT(*)
FROM test_sample
WHERE day_of_week LIKE "%sunday"
  OR day_of_week LIKE "%saturday"
GROUP BY location_description

Answer 2

现在无需UNION，只需将WHERE调整为包括两天；

SELECT location_description as Crimes,COUNT(*)
FROM test_sample
where test_sample.day_of_week LIKE"%sunday"
   or test_sample.day_of_week LIKE"%saturday"
GROUP BY test_sample.location_description