小编FZF*_*FZF的帖子

我在Windows 7上使用Visual Studio 2010 Express.我最近安装了GitExtension,它似乎工作正常(克隆和分支,什么不是).当我打开VS时,我预计它会出现在Visual Studio Express上,但事实并非如此.我在线搜索并发现了一些相同问题的参考,建议使用VS Extension管理器下载2010年的Git插件.但是,当我尝试在VS上使用Extension Manager来访问和安装GitExtension插件时,没有任何与Git相关的问题出现了.有关使GitExtension在Windows 7上出现在VS 2010 Express上的任何建议吗？真的很感激任何帮助.

我们在Bigquery表的String字段中加载了json blob.我需要在表上创建一个视图(使用标准的sql),它将数组字段提取为一个bigquery数组/重复字段"RECORD"类型(它本身包含一个重复的字段).

这是一个示例记录(json_blob):

{"order_id":"123456","customer_id":"2abcd", "items":[{"line":"1","ref_ids":["66b56e60","9e7ca2b7"],"sku":"1111","amount":40 },{"line":"2","ref_ids":["7777h0","8888j0"],"sku":"2222","amount":10 }]}

我希望最终得到一个具有以下布局的视图:

[
{
    "name": "order_id",
    "type": "STRING",
    "mode": "NULLABLE"
},
{
    "mode": "NULLABLE",
    "name": "customer_id",
    "type": "STRING"
},
{
    "mode": "REPEATED",
    "name": "items",
    "type": "RECORD",
    "fields": [
        {
            "mode": "NULLABLE",
            "name": "line",
            "type": "STRING"
        },
        {
            "mode": "REPEATED",
            "name": "ref_ids",
            "type": "STRING"
        },
        {
            "mode": "NULLABLE",
            "name": "sku",
            "type": "STRING"
        },
        {
            "mode": "NULLABLE",
            "name": "amount",
            "type": "INTEGER"
        }
    ]
}
]

Json_extract(json_blob,'$ .items')提取项目部分,但是如何将其转换为类型为"RECORD"的bigquery数组,然后可以像普通的bigquery数组/重复STRUCT一样处理？

感谢任何帮助.

在BigQuery表中插入记录时如何分配代理键？像使用Sequence生成唯一值或NextVal的东西？

我们是否可以通过将任务/dag 超时设置为 None 并手动触发其运行来使用气流 dag 来定义永无止境的作业（即具有无条件循环来消耗流数据的任务）？让气流监测成为一项永无止境的任务会导致问题吗？谢谢

这是表（load_history）的记录布局，我正在尝试在使用标准Sql时使用过滤器（因为旧版sql有时可能会过时）：

[
{
    "mode": "NULLABLE",
    "name": "Job",
    "type": "RECORD",
    "fields": [
        {
          "mode": "NULLABLE",
          "name": "name",
          "type": "STRING"
        },
        {
          "mode": "NULLABLE",
          "name": "start_time",
          "type": "TIMESTAMP"
        },
        {
          "mode": "NULLABLE",
          "name": "end_time",
          "type": "TIMESTAMP"
        },
        {
    ]
},      
{
    "mode": "REPEATED",
    "name": "source",
    "type": "RECORD",
    "description": "source tables touched by this job",
    "fields": [     
        {
          "mode": "NULLABLE",
          "name": "database",
          "type": "STRING"
        },
        {
          "mode": "NULLABLE",
          "name": "schema",
          "type": "STRING"
        },
        {
          "mode": "NULLABLE",
          "name": "table",
          "type": "STRING"
        },
        {
          "mode": …