小编use*_*276的帖子

GroupBy在JavaScript中对JSON数据进行分组并填充在optgroup上

我有点失落.我得到这个JSON:

[{
    "id": "210",
    "name": "Name 1",
    "category": "Category 1"
}, {
    "id": "187",
    "name": "Name 2",
    "category": "Category 1"
}, {
    "id": "186",
    "name": "Name 3",
    "category": "Category 1"
}, {
    "id": "185",
    "name": "Name 4",
    "category": "Category 1"
}, {
    "id": "184",
    "name": "Name 5",
    "category": "Category 1"
}, {
    "id": "183",
    "name": "Name 6",
    "category": "Category 1"
}, {
    "id": "182",
    "name": "Name 7",
    "category": "Category 1"
}, {
    "id": "181",
    "name": "Name 8",
    "category": "Category 2" …
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jquery json optgroup

11
推荐指数
2
解决办法
2万
查看次数

MySQL语句的两行之间存在差异

我试图在mysql数据库中区分两行.
我有这个表包含ID,公里,日期,car_id,car_driver等...
因为我不总是按正确的顺序输入表中的信息,我可能会得到这样的信息:

ID | Kilometers | date | car_id | car_driver | ...
 1 | 100        | 2012-05-04 | 1 | 1  
 2 | 200        | 2012-05-08 | 1 | 1
 3 | 1000       | 2012-05-25 | 1 | 1 
 4 | 600        | 2012-05-16 | 1 | 1
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使用select语句,我能够正确地对表进行排序:

SELECT * FROM mytable ORDER BY car_driver ASC, car_id ASC, date ASC
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我会得到这个:

ID | Kilometers | date  | car_id | car_driver | ...  
 1 | 100        | 2012-05-04 …
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mysql select inner-join

10
推荐指数
2
解决办法
3万
查看次数

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