与某个日期范围内的 Google App Engine 查询相关的问题
我担心以这种方式查询实体
created_start = datetime.today()
created_start = created_start - timedelta(hours=1)
created_end = datetime.now()
a = Message.all()
a.filter('created >=',created_start)
a.filter('created <',created_end)
由于 1000 个查询结果限制， 。那么两个问题：
- 如果
.all()返回超过 1000 个结果，这会起作用吗？或者换一种说法。如果有更多结果，all()是否会返回超过 1000 个结果？ - 有没有更好的方法来实现给定数据范围之间实体的查询？
预先非常感谢
I am concerned about querying entities this way
created_start = datetime.today()
created_start = created_start - timedelta(hours=1)
created_end = datetime.now()
a = Message.all()
a.filter('created >=',created_start)
a.filter('created <',created_end)
Due to the 1000 query results restriction. So two questions:
- Will this work if
.all()returns more that 1000 results? Or to put it in a different way. Willall()return more than a 1000 results incase there were more? - Is there a better way to achieve querying for entities between a given data range?
Thank you very much in advance
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评论（1）
您的解决方案很好，因为版本 1.3.6，查询结果不再上限为 1000。
您可以迭代
a实体直至耗尽，或使用 光标。Your solution is good, since Version 1.3.6, query results are no longer capped at 1000.
You can iterate
aentities until exhaustion or fetch chunks of entities using a cursor.