Are you checking the query reponse's "isError" function?


On Thursday, May 8, 2014 5:34:13 PM UTC-4, John Richardson wrote:
>
> Hello,
>
> Google fusion tables sometimes returns 0 rows even though the next time I 
> execute the same query it returns the correct number of rows.  This often 
> happens when I don't execute a query for a few minutes.  It's almost like 
> it times out but still returns a valid SQL response.  Here is an example 
> SQL statement:
>
> http://www.google.com/fusiontables/gvizdata?tq=SELECT 'loan_status' as 
> 'Loan Status', count() as 'Total' FROM 
> 11-6aP_3sWAtvCjhLtX7oj50gQrA3Q4lDdLEmGDIJ WHERE grade IN ('A') GROUP BY 
> 'loan_status' ORDER BY 'loan_status' ASC
>
> Occasionally, the query will timeout, and return the correct error message 
> from getMessage that I can catch.  However, when 0 rows are returned there 
> is no warning or error message to catch even though I know there should be 
> rows.  
>
> I am doing a data.getNumberOfRows(); to determine if the result is valid 
> containing rows.  However, there are cases when 0 rows is the correct 
> result.  Is there any way to ensure that the query.send() returns the 
> correct query result? I am confused why there is this inconsistency.  
>
>
> Thanks for your help in advance,
> John
>

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