CREATE OR REPLACE TEMP TABLE in a script error: “Exceeded rate limits: too many table update operations for this table.”

问题

This script gives me an error after ~11 steps:

DECLARE steps INT64 DEFAULT 1;
LOOP 
  CREATE OR REPLACE TEMP TABLE countme AS (SELECT steps, 1 x, [1,2,3] y);
  SET steps = steps+1;
  IF steps=30 THEN LEAVE; END IF;
END LOOP;

Exceeded rate limits: too many table update operations for this table. For more information, see https://cloud.google.com/bigquery/troubleshooting-errors

Even if this is a temp table - what can I do instead?

回答1:

Instead of using a TEMP TABLE, hold the results on a temp variable with an array. You can even materialize it as the last step:

DECLARE steps INT64 DEFAULT 1;
DECLARE table_holder ARRAY<STRUCT<steps INT64, x INT64, y ARRAY<INT64>>>;

LOOP 
  SET table_holder = (
    SELECT ARRAY_AGG(
      STRUCT(steps, 1 AS x, [1,2,3] AS y))
    FROM (SELECT '')
  );
  SET steps = steps+1;
  IF steps=30 THEN LEAVE; END IF;
END LOOP;

CREATE TABLE temp.results
AS
SELECT *
FROM UNNEST(table_holder)

来源：https://stackoverflow.com/questions/59314389/create-or-replace-temp-table-in-a-script-error-exceeded-rate-limits-too-many