关于 Datastore 的一个限制

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This topic created in 5661 days ago, the information mentioned may be changed or developed.

BadArgumentError: First ordering property must be the same as inequality filter property, if specified for this query;

Properties In Inequality Filters Must Be Sorted Before Other Sort Orders
http://code.google.com/appengine/docs/python/datastore/queriesandindexes.html

不知道各位碰到这个问题的同学是怎么解决的?
实在是没想到居然会有这个限制，早前怎么没看清楚呢?

property

specified

same

1 replies • 1970-01-01 08:00:00 +08:00

keakon

Nov 8, 2010

数据量不大的话，全部取出来自己在内存里排序吧

我是基本上不用不等于操作和排序，这样就不需要建复合索引了