google-bigquery - BigQuery 脚本: running a SQL query based on each row included in a table column

Question

我的源表包括url_id和SQL [标准sql，字符串]

我想运行字符串列“SQL”中的每个 SQL 语句，并将结果与​​相应的 url_id 连接起来

预期结果

更新

为了使其易于重现，我从公共(public) BQ 导入了类似的架构:

bigquery-public-data.covid19_italy.data_by_province

如果我运行

select string_agg(
    format('select %i as url_id, (%s) as simpleSKU', url_id, sql), 
    ' union all '   )

FROM `xxx.staging.test_query

它返回

Answer 1

考虑下面

execute immediate (
  select 'select url_id, region_name from (' || string_agg(
    format('select %i as url_id, array(%s) as region_names', url_id, sql), 
    ' union all '
  ) || '), unnest(region_names) as region_name'
  from your_table
);   

如果应用于您问题中的示例数据 - 输出它