UUID
Why is better to use an UUID to store unique id values?
Why is better to use an UUID to store unique id val开发者_JAVA百科ues? What are the benefits?Two reasons.[详细]
2023-01-23 06:36 分类：问答default value of GUID in for a column in mysql
I want a column to default to a GUID, so if I am doing an insert and I don\'t explicitly set the value, I 开发者_如何学Pythonwant it to default to a new GUID value.[详细]
2023-01-22 11:10 分类：问答Android Bluetooth Where can I get UUID?
I want to connect 3 devices via Bluetooth. As for example I use BluetoothChat. So How I understand I should use different UUID for this devices. I have been trying to connect via such UUID=766c82f0-e[详细]
2023-01-22 08:29 分类：问答How should I use UUID with JavaDB/Derby and JDBC?
I currently use INT as type for primary key in JavaDB (Apache Derby), but since I\'m implementing an distributed system I would like to change the type to java.util.UUID. A few questions about this:[详细]
2023-01-20 17:09 分类：问答Using a UUID as a primary key in Django models (generic relations impact)
For a number of reasons^, I\'d like to use a U开发者_运维问答UID as a primary key in some of my Django models. If I do so, will I still be able to use outside apps like \"contrib.comments\", \"django-[详细]
2023-01-20 04:37 分类：问答Cassandra - How to insert an UUID
I\'m using Cassandra0.6.4 and I\'m trying to insert an UUID for a column and I get an exception of: InvalidRequestException(why:UUIDs must be exactly 16 bytes). What is the correct way to insert an UU[详细]
2023-01-19 22:22 分类：问答UUID primary keys and Memcached
With Data being cached so often now and the database is only being accessed when there is new data (and then that data is cached lol) is there even a real performance difference for using Intprimary k[详细]
2023-01-19 00:04 分类：问答Extract the time from a UUID v1 in python
I have some UUIDs that are being generated in m开发者_如何学JAVAy program at random, but I want to be able to extract the timestamp of the generated UUID for testing purposes. I noticed that using the[详细]
2023-01-18 02:33 分类：问答How to generate uuid with PostgreSQL 8.4.4 on Ubuntu 10.04?
I am running PostgreSQL 8.4.4 with Ubuntu 10.04. I am trying to generate uuid but can\'t find a way to do it.[详细]
2023-01-18 01:07 分类：问答Is there a way to retroactively create time/node based UUID in PHP?
Most time-based (type 1) UUIDs are created using the current time. I\'m migrating a MySQL database to cassandra and would like to create timebased UUIDs for archived items. Can someone provide an exam[详细]
2023-01-17 14:54 分类：问答
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