Question

我试图将我的SQL输出排序为特定顺序，但是有很多选项，所以我不能只输入它们。

我有一个表，该表的列（binlocation）具有3或4个字符的字符串（取决于以下内容）。所有字符串都具有以下格式的“字母数字字母”，其范围为{A-G} {1-30} {A-I}，因此如下所示：A1A，A2A，...，G30I

我有一种非常特殊的方式希望订购它们，但是有1890个选项，因此我不能仅通过数组或类似命令订购。

我希望它按第一个值排序，然后对于每个第一个值，我希望按第二个值排序，但对于第二个值，则按第三个值排序。例如： A1A，A1B，A1C，...，A2A，A2B，A2C，...，B1A，B1B，B1C，...等

要增加另一级别的复杂性，我希望以'A'，'B'，'C'和'D'结尾的所有内容首先显示。因此，例如： A1A，A1B，A1C，A1D，A2A，A2B，A2C，A2D，...，G1A，G1B，G1C，G1D，G2A，G2B，G2C，G2D，... A1E，A1F，A1G，A1H，A1I，A2E ，A2F等...

到目前为止，我所做的是将字符串分成3列，然后相应地对3列进行排序：

select binlocation as "Bin", left(binlocation,1) as isle, cast(left(right(binlocation,length(binlocation)-1), length(binlocation)-2) as int) as row, right(binlocation,1) as height
from icprod
where discontinued = true
and quantityavailable >= 1
order by isle, row, height

这使我处于一阶的binlocation。但是，我不知道如何只让它先按A，B，C，D排序高度。我希望这就像两个输出的并集一样简单：

select binlocation as "Bin", left(binlocation,1) as isle, cast(left(right(binlocation,length(binlocation)-1), length(binlocation)-2) as int) as row, right(binlocation,1) as height
from icprod
where discontinued = true
and quantityavailable >= 1
and right(binlocation,1) in ('A', 'B', 'C', 'D')
order by isle, row, height

UNION

select binlocation as "Bin", left(binlocation,1) as isle, cast(left(right(binlocation,length(binlocation)-1), length(binlocation)-2) as int) as row, right(binlocation,1) as height
from icprod
where discontinued = true
and quantityavailable >= 1
and right(binlocation,1) in ('E', 'F', 'G', 'H', 'I')
order by isle, row, height

抛出了很多错误，说我的列是意外令牌。

在此先感谢您的帮助。

Answer 1

我认为这可以满足您的要求

payload = {'username': 'name@domain.com', 'password': 'thisisit'}
with requests.Session() as s:
    s.post('https://example.com/login', data=payload)
    url = 'https://example.com/inquiry_detail?action=download_inquiry_items&inquiry_id=1'
    r = requests.get(url, allow_redirects = True)
    with open('foobar', 'wb') as f:
        f.write(r.content)

逻辑是：

先放入A / B / C / D的
然后按首字母顺序
在3位数字值之前按4位数字顺序排序
按整个值（即按数字）排序

如何以非平凡的顺序订购SQL输出？

1 个答案: