Hello, I would like an efficient utility to generate Unique sequences of bytes. UUID is a good candidate but UUID.randomUUID().toString() generates stuff like 44e128a5-ac7a-4c9a-be4c-224b6bf81b20 which is good as long as you don't need to transmit it over http, in which casa the dashes need to be removed. I'm looking for an efficient w...
Hi guys, 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. I do have the uuid-ossp.sql in /usr/share/postgresql/8.4/contrib/uuid-ossp.sql When I try this is what I get : postgres=# SELECT uuid_generate_v1(); ERROR: function uuid_generate_v1() does not exist LINE 1: SELECT ...
in java we can get UUID from class ie UUID.randomUUID().toString() how to get UUID in j2me ? is there any function or class which provides it ? ...
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 Int primary keys vs UUID primary keys. For example, lets assume im building NetFlix. A new movie gets added to the database, and the movie listing al...
For a number of reasons^, I'd like to use a UUID 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-voting" or "django-tagging" which use generic relations via ContentType? Using "django-voting" as an example, the Vote model looks like this: class Vote(mod...
I'm using Cassandra 0.6.4 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 UUID? Thanks! My column family is defined as: <ColumnFamily CompareWith="TimeUUIDType" Name="Comments"/> Code Snippet: try { ...
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: What datatype in JavaDB/Derby should I use for UUID? I have seen CHAR(16) FOR BIT DATA been mentioned but I don't know much about it. Is VA...
Hi 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-e1b4-11df-85ca-0800200c9a66, which I 've get it from Web UUID generator. But it doesn't work at all. I have succesfully connected (to 1 d...
I'm using uniqid() in PHP to generate a UUID however, the returned string is something like: 4cca63b0d4be4 I thought UUIDs are suppose to be something like: 550e8400-e29b-41d4-a716-446655440000 How do you create a UUID in PHP? Usually I use auto-increment in MySQL to get my unique IDs, however, sometimes I want to generate a UUID when...
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 want it to default to a new GUID value. how can I do this? ...