FLATTEN with TABLE_DATE_RANGE

Question

我在數據集中有一系列表，需要在FLATTENing重複記錄之一的同時查詢所有這些表。例如，像下面的查詢工作正常：

SELECT 
    date, 
    customDimensions.value AS customDimension, 
    hits.page.pagePath AS pagePath 
FROM 
    (FLATTEN([<projectId>:<datasetId>.ga_sessions_20130910] , 
    customDimensions)) 
WHERE 
    hits.page.pagePath CONTAINS '/helmets' 
    AND customDimensions.index IN (1,2,3) 

但是，我使用表通配符時遇到FLATTENing麻煩。有人可以幫我解決這個問題嗎？有沒有可能在TABLE_DATE_RANGE中使用FLATTEN？

SELECT 
    date, 
    customDimensions.value AS customDimension, 
    hits.page.pagePath AS pagePath 
FROM 
    (FLATTEN (TABLE_DATE_RANGE ([<project>:<dataset>.ga_sessions_], 
    TIMESTAMP('2013-09-10'), 
    TIMESTAMP ('2014-06-10'))), 
    customDimensions) 
WHERE 
    hits.page.pagePath CONTAINS '/helmets' 
    AND customDimensions.index IN (1,2,3) 

感謝， 傻眼

Answer 1

根據參考手冊，該FLATTEN語法是：

...(FLATTEN ([project_name:]datasetId.tableId, flattenField)).. 
...(FLATTEN (subselect_clause, flattenField)).. 

在此基礎上，我會嘗試把一個子查詢子句，像這樣的FLATTEN語句中：

SELECT 
date, 
customDimensions.value AS customDimension, 
hits.page.pagePath AS pagePath 
FROM 
FLATTEN(
(SELECT date, customDimensions, hits FROM TABLE_DATE_RANGE ([<project>:<dataset>.ga_sessions_], 
TIMESTAMP('2013-09-10'),TIMESTAMP ('2014-06-10'))) 
, customDimensions) 
WHERE 
hits.page.pagePath CONTAINS '/helmets' 
AND customDimensions.index IN (1,2,3) 

Answer 2

試試這個，它適用於我..

SELECT 
    date, 
    customDimensions.value AS customDimension, 
    hits.page.pagePath AS pagePath 
FROM 
    (FLATTEN (SELECT * FROM TABLE_DATE_RANGE ([<project>:<dataset>.ga_sessions_], 
    TIMESTAMP('2013-09-10'), 
    TIMESTAMP ('2014-06-10'))), 
    customDimensions) 
WHERE 
    hits.page.pagePath CONTAINS '/helmets' 
    AND customDimensions.index IN (1,2,3)