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How do I create a unique ID in Java? [duplicate]
I'm looking for the best way to create a unique ID as a String in Java.
11 Answers
11
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how to exclude null values in array_agg like in string_agg using postgres?
...ere is a null value, that null is also taken as a name in the aggregate. For example :
8 Answers
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SQL Server indexes - ascending or descending, what difference does it make?
...ndexes:
CREATE INDEX ix_index ON mytable (col1, col2 DESC);
can be used for either:
SELECT *
FROM mytable
ORDER BY
col1, col2 DESC
or:
SELECT *
FROM mytable
ORDER BY
col1 DESC, col2
, but not for:
SELECT *
FROM mytable
ORDER BY
col1, col2
An index on a...
How can I exclude some folders from my Eclipse project?
...d-party" directory in our repository that cannot be present in the project for the pair-programming plugin we are using to be able to sync efficiently.
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Rails auto-assigning id that already exists
...s that it is only used once.
The simplest solution is to set the sequence for your company.id column to the highest value in the table with a query like this:
SELECT setval('company_id_seq', (SELECT max(id) FROM company));
I am guessing at your sequence name "company_id_seq", table name "company...
How to add facebook share button on my website?
...es, you can still use simple share links. Also, check out this simple page for help building simple links for all your popular social media sites: sharelinkgenerator.com
– pistol-pete
Mar 6 '15 at 17:46
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Can a foreign key be NULL and/or duplicate?
Please clarify two things for me:
11 Answers
11
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What is the syntax for an inner join in LINQ to SQL?
I'm writing a LINQ to SQL statement, and I'm after the standard syntax for a normal inner join with an ON clause in C#.
1...
How to dynamically update a ListView on Android [closed]
... ListView Adapter classes come with a Filter object that can be used to perform the filtering automagically. We just need to pipe the input from the EditText into the Filter. Turns out that is pretty easy. To run a quick test, add this line to your onCreate() call
adapter.getFilter().filter(s);
N...
Android: How to bind spinner to custom object list?
...wer. You can also go with a custom adapter, but the solution below is fine for simple cases.
Here's a re-post:
So if you came here because you want to have both labels and values in the Spinner - here's how I did it:
Just create your Spinner the usual way
Define 2 equal size arrays in your array...