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Add example howto select ranges of dates.

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Willi Goesgens 2015-08-10 10:51:50 +02:00 committed by Michael Hackstein
parent 1ba7587fc0
commit 402b622691
1 changed files with 14 additions and 1 deletions
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15
Documentation/Books/Users/Aql/DateFunctions.mdpp
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@ -125,4 +125,17 @@ There are two recommended ways to store timestamps in ArangoDB:
- as [Epoch number](https://en.wikipedia.org/wiki/Epoch_%28reference_date%29)
This way you can work with [skiplist incices](../IndexHandling/Skiplist.html) and use
string comparisons (less than, greater than, in, equality) to express timeranges in your queries.
string comparisons (less than, greater than, in, equality) to express timeranges in your queries:
@startDocuBlockInline working_with_date_time
@EXAMPLE_ARANGOSH_OUTPUT{working_with_date_time}
db._create("exampleTime");
var timestamps = ["2014-05-07T14:19:09.522","2014-05-07T21:19:09.522","2014-05-08T04:19:09.522","2014-05-08T11:19:09.522","2014-05-08T18:19:09.522"];
for (i = 0; i < 5; i++) db.exampleTime.save({value:i, ts: timestamps[i]})
db._query("FOR d IN exampleTime FILTER d.ts > '2014-05-07T14:19:09.522' and d.ts < '2014-05-08T18:19:09.522' RETURN d").toArray()
~addIgnoreCollection("example")
~db._drop("exampleTime")
@END_EXAMPLE_ARANGOSH_OUTPUT
@endDocuBlock working_with_date_time
The first and the last timestamp in the array are excluded from the result by the `FILTER`.