Use declare & loop in BigQuery to insert data

Question

I just practice using Bigquery & try to use one of my SQL query on it

declare @id int 
select @id = 1
while @id >=1 and @id <= 1000
begin
    inser         


        

Answer 1

It is not the best practice to use cursor-based logic when dealing with sql, rather you need to tune yourself into set-based processing. Especially with BigQuery which does not support [yet] cursor processing and procedural logic, but luckily has rich support for ARRAYs which can be used here

As your question is little abstract - below example is abstract too, but gives you an idea

#standardSQL
INSERT INTO `project.dataset.Quincy` (id, col)
WITH array_to_loop_through AS (
  SELECT id 
  FROM UNNEST(GENERATE_ARRAY(1, 1000, 1)) id
)
SELECT id, CONCAT('Rank: ', CAST(id AS STRING))
FROM array_to_loop_through