gql

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Selecting values from a column with GQL in App Engine

I want to get the values from a particular column of a table. Whats the correct query for that ? Eg: Suppose we have a Crisis table which has a \"name\" column[详细]

2023-02-25 16:54 分类：问答
Merging cached GQL queries instead of using IN

I\'m generating a feed that merges the comments of many users, so your feed might be of comments by user1+user2+user1000 whereas mine might be user1+user2.So I have the line:[详细]

2023-02-24 16:55 分类：问答
GQL: is myList.contains(myField) any faster than 30 separate myField == myList(i) queries?

I\'ve got a list with 100 Longs in it, and an Entity kind with a Long field.I want to find all the entities whose field value is in the list.[详细]

2023-02-20 20:16 分类：问答
How to retrieve entity from key value in GQL

I am using Google App Eng开发者_开发技巧ine\'s datastore and wants to retrieve an entity whose key value is written as[详细]

2023-02-12 20:14 分类：问答
How does the appengine datastore (java - JDO) store and return data, i.e. is it FIFO or LIFO? If its FIFO or NEITHER, how can I make it LIFO?

I was just wondering if I store some data chronologically, will it be returned back in the order of most-recent to least-recent OR least-recent to most-recent? For e.g. If I input data in the followin[详细]

2023-02-10 10:27 分类：问答
What's the best way to do a jQuery autocomplete tag that draws data from GAE

i have something here that is basically from jqueryui. Yes, it is raw and the example uses JSON to handle the autocompleting process. My back end developers are using python on GAE and they usually ju[详细]

2023-02-08 08:45 分类：问答
GQL: Not equal filter on a multivalued property

Tinkering a little with GAE\'s da开发者_JS百科tastore i\'ve found that i can\'t think a proper way to filter out results using the inequality filter \'!=\' on a multivalued property:[详细]

2023-02-06 21:16 分类：问答
Querying datastore for all models that contain a certain element within a listproperty

Hey, I have a model like this: class List(db.Model): user = db.ReferenceProperty(User) listname = db.StringProperty()[详细]

2023-02-06 01:19 分类：问答
Find entity that matches the most criteria

I have some properties, let\'s say color = blue age = 22 name = Tom Of a number of entities in the datastore, how can I get one that matches most of the properties? Of course I could do:[详细]

2023-02-04 10:15 分类：问答
GAE Application and GQL

I need to create an application that will collect the folloving info (NameOfWebSite, DateTimeofVisit) and after that I\'d like to receive开发者_运维问答 infomation about number of visits per defined p[详细]

2023-02-04 04:33 分类：问答