Question

我创建了此查询：

SELECT
(SELECT value from UNNEST(project.labels) where key = "project") as project,
ROUND(SUM(cost), 2) as cost
FROM cloud.dataset.billing_export
group by ar

它给我类似的东西

Row | project | cost

  1 | PJ1     | 23

  2 | PJ2     | 50

是否可以为每个值（每个项目）创建一个VIEW？我正在尝试使用UDF，并且每个视图都必须具有基于项目的名称（例如：view_PJ1），并具有类似名称（但有很多错误）：

LOOP
SET vars = (SELECT (SELECT value FROM UNNEST(project.labels) WHERE key = "project") AS project
            FROM FROM cloud.dataset.billing_export
            GROUP BY project);
  IF vars=null THEN
    LEAVE;
  END IF;
CREATE OR REPLACE VIEW `cloud`.`dataset`.AR
AS
SELECT DISTINCT
     (SELECT value from UNNEST(project.labels) where key = "project") as project,
     ROUND(SUM(cost), 2) as cost
     FROM cloud.dataset.billing_export
     WHERE project=vars
     GROUP BY project;
END LOOP;

预先感谢

Answer 1

这是一个在BigQuery中运行的脚本，该脚本生成4个视图-为每个视图指定一个来自SQL查询的名称：

DECLARE x INT64 DEFAULT 0;
DECLARE rs ARRAY<STRING>;

SET rs = (
  WITH data AS (SELECT i FROM `fh-bigquery.public_dump.numbers_255` WHERE i < 4)
  SELECT ARRAY_AGG( 
    'CREATE OR REPLACE VIEW `temp.number' || i
    ||'` AS SELECT i FROM `fh-bigquery.public_dump.numbers_255` WHERE i=' || i
  )  
  FROM data
);

LOOP
  EXECUTE IMMEDIATE(SELECT rs[OFFSET(x)]);
  SET x = x + 1;
  IF x >= ARRAY_LENGTH(rs) THEN
    LEAVE;
  END IF;
END LOOP;

秘密在于将EXECUTE IMMEDIATE与生成的字符串一起使用来创建视图。

为查询中的每个结果创建一个BigQuery VIEW

1 个答案: