Google Bigquery 用简单的 select 表示 "Response too large to return"

Question

Modifier allowLargeResults 已设置，我还尝试了交互式和批量查询优先级。 table search_results 中有 7000 万条记录，searches 中有 1000 万条记录，[=18 中有大约（仅）900 条记录=]购买table。而且 WHERE 也很好地减少了行数。

SELECT
    s.flyFrom, s.to, s.typeFlight, r.price, b.price, b.affily
FROM [sptest.buy] AS b
INNER JOIN [sptest.search_results] AS r
ON b.booking_token=r.booking_token
INNER JOIN [sptest.searches] AS s
ON s.searchid=r.searchid
WHERE
    DATE(r.saved_at) >= DATE('2015-06-23 00:00:00') AND 
    DATE(s.saved_at) >= DATE('2015-06-23 00:00:00')
LIMIT 10

问题可能是由大连接键引起的吗？ booking_token 键是可变大小的 50-600 个字符。

Answer 1

我会对此查询做一些修改：

将 WHERE 子句过滤器移近 table 扫描
使用 JOIN EACH 结构

SELECT s.flyFrom, s.to, s.typeFlight, r.price, b.price, b.affily FROM [sptest.buy] AS b INNER JOIN EACH (SELECT * FROM [sptest.search_results] WHERE saved_at > DATE('2015-06-23 00:00:00')) AS r ON b.booking_token=r.booking_token INNER JOIN EACH (SELECT * FROM [sptest.searches] WHERE saved_at > DATE('2015-06-23 00:00:00') AS s ON s.searchid=r.searchid LIMIT 10

Google Bigquery 用简单的 select 表示 "Response too large to return"

Google Bigquery says "Response too large to return" with simple select

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