Finding data with longest time series within a series of RICS // Searching for NaTs
If i had a query such as
response=search.Definition(
filter = f"RCSUnderlyingProductName eq 'Corn' and ExchangeName eq 'GeoGrain' and DTSubjectName eq 'Ohio'",
order_by = "ExpiryDate desc",
top = 10000,
select = "DTSubjectName, ExchangeName, RIC, RCSAssetCategoryLeaf, AssetState, ExpiryDate, UnderlyingQuoteRIC, FirstNoticeDay",
).get_data()
geograin_df = response.data.df
to find GeoGrain RICs - but wanted to narrow it down by the first available date, is there some synatax that could be used to filter at this level.
Additionally in the above expression, I would like to filter the data for those without ExpiryDate (that is that return NaT (not a time)) - but cannot seem to work out what string or phrase to work with.
Apologies as my SQL is quite poor!
Cheers!
Best Answer
-
Dear @Shadeun ,
In order to get data for those without ExpiryDate, I would advice consider filtering by AssetState eq 'AC' instead since ExpiryDate eq 'NaT' return a type error. This would hopefully resolve your second query as NaTs are active assets. As it comes to the first one, you would need to find the respective property name first and then think of a syntax for filtering.
To find a possible property for your case I would advice using browser.properties() function specified in this article.
Hope this was helpful and feel free to let me know if you have any further question.
Best regards,
Haykaz
1
Answers
-
hi @Shadeun ,
isnull
andnotnull
work withNaT
so you can handle them much the same way you handleNaNs
. For example,geograin_df[geograin_df['ExpiryDate'].notnull()]
Regarding the filtering on first available date, let me try to check and will keep you updated
0 -
Thanks, I should've been more specific that I was looking for a way to write it into the filter string rather than the pandas way (which is fine, its just that putting in the general string helps reduce results below the 10k threshold)0
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