In Postgresql, force unique on combination of two columns In Postgresql, force unique on combination of two columns sql sql
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In Postgresql, force unique on combination of two columns
sql
postgresql
unique
lien
sql
Postgres unique constraint vs index
sql
postgresql
unique
lien
sql
How to select only the first rows for each unique value of a column?
sql
sql-server
tsql
select
unique
lien
sql
How to create a unique index on a NULL column?
sql
sql-server
indexing
constraints
unique
lien
sql
How can I do SELECT UNIQUE with LINQ?
sql
visual-studio
linq
select
unique
lien
sql
Can I use VARCHAR as the PRIMARY KEY?
mysql
sql
primary-key
unique
varchar
lien
sql
SQL - select distinct only on one column [duplicate]
sql
sql-server
unique
distinct
lien
sql
MySQL: Select N rows, but with only unique values in one column
sql
mysql
unique
aggregate-functions
min
lien
sql
Sqlite NULL and unique? [closed]
sql
sqlite
null
unique
unique-constraint
lien
sql
SQL Server : does NEWID() always gives a unique ID?
sql
sql-server
database
unique
newid
lien
sql
MySql compound keys and null values
sql
mysql
null
unique
lien
sql
SQL: How to find duplicates based on two fields?
sql
oracle
unique
unique-constraint
ora-00918
lien
sql
How can I force a column to be unique for an entire table in SQL Server 2008 R2?
sql
sql-server
database
primary-key
unique
lien
sql
How to find out whether a table has some unique columns
sql
sql-server
unique
lien
sql
PostgreSQL Partial Indexes and UPSERT
sql
postgresql
indexing
unique
upsert
lien
sql
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