Re: [geomesa-dev] lessThan AND greaterThan on date field

[Emilio Lahr-Vivaz <elahrvivaz@xxxxxxxx>]

Hello,

We treat attribute-based date comparisons the same as temporal predicates, so yes, the ">=" and "<=" predicates will be used as part of the primary filter. You can enable explain logging to see how a given query is being set up:

https://www.geomesa.org/documentation/user/datastores/query_planning.html#explain-query

Thanks,

Emilio

On 09/17/2018 11:21 AM, phil.xiao wrote:

Dear All，

I have a question about “>=“ and “<=“ on the date field. When we first applied the “>=“ and “<=“ predicates and it worked well. However, as we digged into the source code we found that the query object was transformed to the ‘Filter' object, and then the ‘Filter’ was divided into the primary part and the secondary part, right? Based on my comprehension, the spatial and temporal criteria are involved in the primary part.  So my question is whether the attribute-based “greater than” or “less than” predicates on the date field will trigger Z3 or XZ3 index to work to improve the query efficiency.

Thank you and Best regards,

Phil

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