Question

在Google BigQuery中，我必须执行以下操作：

SELECT hits.item.productName
FROM [‘Dataset Name’ ]
WHERE date, visitId, fullVisitorId IN (
  SELECT date, visitId, fullVisitorId
  FROM [‘Dataset Name’ ]
  WHERE hits.item.productName CONTAINS 'Product Item Name A'
  AND totals.transactions>=1)

但是，这似乎不受支持。除了使用JOIN之外，我还有哪些替代方案？

Answer 1

改为加入。

相当于：

SELECT COUNT(*), stn, a.wban, FIRST(name) name, FIRST(country) country
FROM [fh-bigquery:weather_gsod.gsod2014] a
WHERE stn, wban IN
  (SELECT usaf, wban FROM [fh-bigquery:weather_gsod.stations] WHERE country='UK')
GROUP BY 2, 3
ORDER BY 1 DESC

将是：

SELECT COUNT(*), stn, a.wban, FIRST(name) name, FIRST(country) country
FROM [fh-bigquery:weather_gsod.gsod2014] a
JOIN [fh-bigquery:weather_gsod.stations] b
ON a.stn=b.usaf AND a.wban=b.wban
WHERE country='UK'
GROUP BY 2, 3
ORDER BY 1 DESC

使用带有IN（）的多个字段进行子查询

1 个答案: