[Bugs] #1342 IMME: range queries use lexical comparison, not numerical

[Sugar Labs Bugs]

#1342: range queries use lexical comparison, not numerical
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    Reporter:  sascha_silbe     |          Owner:  sascha_silbe     
        Type:  defect           |         Status:  new              
    Priority:  Immediate        |      Milestone:  0.86             
   Component:  sugar-datastore  |        Version:  Git as of bugdate
    Severity:  Minor            |       Keywords:  r?               
Distribution:  Unspecified      |   Status_field:  Assigned         
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Comment(by sascha_silbe):

 Replying to [comment:8 tomeu]:
 > Sorry, I'm still not getting it. Why would we fail silently when
 querying?
 Because timestamp is stored using sortable_serialise() on
 create()/update(), but if you pass a (decimal) string for timestamp to
 find() it will use it as-is. Comparing a decimal string to one returned by
 sortable_serialise() doesn't give any useful result.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/1342#comment:9>
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