Questions tagged [unique]

21

votes

4

answers

HashSet contains duplicate entries

asked 2013-04-26T13:51:32.307

8

votes

2

answers

NFC tags unique ID

tags unique nfc uniqueidentifier serial-number

asked 2013-04-18T10:10:50.020

21

votes

1

answers

How to avoid adding duplicates in a many-to-many relationship table in SQLAlchemy - python?

python sqlalchemy many-to-many duplicates unique

asked 2013-04-16T10:44:06.123

16

votes

1

answers

Sqlite create unique pair of columns

sqlite unique

asked 2013-04-04T18:42:58.107

8

votes

4

answers

upload images through php using unique file names

php cordova upload unique filenames

asked 2013-03-20T09:04:48.657

148

votes

17

answers

How can I get unique values from an array in Bash?

linux arrays bash unique

asked 2012-11-30T15:43:58.843

11

votes

3

answers

unique / sort in data.frame

r unique dataframe

asked 2012-10-29T21:02:42.460

53

votes

2

answers

row_number() Group by?

sql-server t-sql unique row-number

asked 2012-09-20T18:27:07.087

10

votes

2

answers

How to retrieve record in Hibernate using Unique key instead of Primary Key

hibernate key unique

asked 2012-09-04T07:19:32.577

12

votes

4

answers

Find the smallest unique substring for each string in an array

arrays string algorithm unique substring

asked 2012-06-28T13:13:52.333

8

votes

3

answers

Symfony2 UniqueConstraint and UniqueEntity (Integrity Violation)

symfony doctrine entity unique unique-constraint

asked 2012-06-20T08:44:11.930

20

votes

1

answers

How to ensure unique item in an array based on specific fields - mongoDB?

mongodb indexing unique mongodb-query

asked 2012-04-30T11:44:15.447

30

votes

5

answers

Pushing unique data into vector

c++ insert unique stdvector

asked 2012-04-29T21:18:34.583

103

votes

6

answers

unique() for more than one variable

r unique

asked 2011-10-17T07:45:00.430

19

votes

2

answers

Unique constraint in XML Schema

xml schema unique constraints

asked 2011-10-10T19:17:53.083

10

votes

5

answers

Java: Enforcing doubly linked objects

java reference hyperlink unique

asked 2011-09-20T08:01:59.183

15

votes

2

answers

Do the names of Qt's objects have to be unique?

qt object unique

asked 2011-08-05T14:31:10.580

19

votes

9

answers

How to Generate Unique Number of 8 digits?

c# numbers unique

asked 2011-05-23T22:09:39.107

94

votes

16

answers

Get unique values from a column in a 2d array

php arrays multidimensional-array filtering unique

asked 2011-05-21T18:18:15.803

10

votes

3

answers

Is unique id generation using UUID really unique?

java unique uuid

asked 2011-04-20T09:31:11.430

9

votes

5

answers

PHP random URL names (short URL)

php url random unique short-url

asked 2011-03-24T16:05:06.963

13

votes

4

answers

MySQL - Unique foreign key

mysql foreign-keys unique

asked 2011-03-15T13:00:33.660

40

votes

5

answers

Do JSON keys need to be unique?

java json parsing key unique

asked 2011-03-15T02:07:52.147

12

votes

3

answers

Efficient data structure for GUIDs

delphi data-structures delphi-2010 guid unique

asked 2011-03-14T09:55:20.947

31

votes

7

answers

mysql find smallest + unique id available

php mysql unique min

asked 2011-02-16T13:19:06.867

13

votes

4

answers

In TreeSet, Sorting & Uniqueness of custom objects based on different properties

java sorting collections treeset unique

asked 2010-12-15T06:58:41.097

16

votes

2

answers

How to define a "unique" constraint on a column of MySQL table in Ruby on Rails 3?

mysql ruby-on-rails ruby-on-rails-3 unique unique-constraint

asked 2010-12-10T03:50:00.557

55

votes

4

answers

phpMyAdmin Removing an index

database indexing phpmyadmin unique

asked 2010-12-01T00:03:28.677

193

votes

15

answers

Count number of occurences for each unique value

r count unique

asked 2010-11-18T13:18:48.057

24

votes

3

answers

Generate random string from 4 to 8 characters in PHP

php string hash random unique

asked 2010-10-17T18:24:14.407

42

votes

5

answers

Unique constraint with JPA and Bean Validation

java validation jpa unique bean-validation

asked 2010-08-16T16:53:07.490

13

votes

10

answers

How to keep only duplicates efficiently?

c++ algorithm stl performance unique

asked 2010-03-31T03:05:31.173

12

votes

3

answers

Check For Duplicate Records VS try/catch Unique Key Constraint

sql select key unique

asked 2010-03-27T18:56:09.960

9

votes

5

answers

unique() for arrays in JavaScript

javascript algorithm arrays unique

asked 2009-12-11T19:05:35.623

9

votes

2

answers

Is it possible to set a unique constraint as a foreign key in another table?

oracle-database foreign-keys constraints unique

asked 2009-08-24T01:26:32.640

14

votes

11

answers

Unique class type Id that is safe and holds across library boundaries

c++ class templates unique

asked 2009-05-28T18:22:58.113

10

votes

3

answers

How do I find() all records unique in certain fields?

ruby-on-rails activerecord find unique distinct

asked 2009-03-16T16:34:53.020

62

votes

2

answers

Are UNIQUE indices case sensitive in MySQL?

mysql indexing key unique case-sensitive

asked 2009-01-21T01:06:41.450

117

votes

5

answers

How to create a unique index on a NULL column?

sql sql-server indexing constraints unique

asked 2008-10-10T14:03:34.287

34

votes

5

answers

MySQL: Select N rows, but with only unique values in one column

sql mysql unique aggregate-functions min

asked 2008-10-10T10:11:46.983

15

votes

3

answers

Generating a unique ID in PHP

php guid unique uuid identifier

asked 2008-10-08T02:43:00.383

25

votes

8

answers

How do I get the unique elements from an array of hashes in Ruby?

ruby arrays hash unique

asked 2008-10-08T01:40:53.957

177

votes

11

answers

How do I remove duplicate items from an array in Perl?

perl arrays unique duplicates

asked 2008-08-11T10:04:32.093

Questions tagged unique