bigtable

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Do a mass db.delete on App Engine, without eating CPU

We\'ve got a reasonably-sized database on Google App Engine - just over 50,000 entities - that we want to clear out stale data from. The plan was to write a deferred task to iterate over the entities[详细]

2023-01-30 10:48 分类：问答
slim3 distributed transaction on appengine

from example @Model publ开发者_JAVA百科ic class Account { @Attribute(primaryKey = true) private Key key;[详细]

2023-01-30 10:08 分类：问答
big table parent-child

if have i have pojo likecategoryA -> subcategoryA--> book r开发者_如何学编程elationship. subcategoryA is child of parent categoryA. book is child of subcategoryA[详细]

2023-01-29 14:02 分类：问答
header on each page of big table of xtable?

How do you put on a big table of xtable the table header on each page?开发者_如何学C, So that is easier to read the table the table between pages.[详细]

2023-01-27 12:39 分类：问答
How to put a spacing of colors in a table of xtable?

How to put a spacing of colors in a table of xtable? I generate the tables with the following instructions:[详细]

2023-01-27 12:38 分类：问答
Can materialized views be used as a fast denomalized big table?

Can Oracle Materialized views be used to join multiple related tables having foreign keys to create a larger denormalized big table which is refreshed instantaneously?[详细]

2023-01-19 09:23 分类：问答
Appengine - Upload to Google Spreadsheet datastore values

I´d like to know how to upload to a Google Spreadsheet, values stored in the database of my application.[详细]

2023-01-19 00:32 分类：问答
App Engine - Import data

I\'m unsure of a good way to import data that I have from an old SQL-based application into app engine (big table). I\'m very confused though I\'m sure I\'m missing something simple.[详细]

2023-01-17 16:16 分类：问答
How do I query a many to many relationship model? - Google App Engine

Here are my models: class User(db.Model): id = db.StringProperty(re开发者_开发技巧quired=True) created = db.DateTimeProperty(auto_now_add=True)[详细]

2023-01-15 07:22 分类：问答
Is there any security concern with displaying the Key value to users in a URL?

I am using the Key value of entities in my datastore as the unique identifier in the URL for pulling up a record:[详细]

2023-01-15 04:52 分类：问答