Unique-constraint is an index that sets one or multiple fields to be unique in a data entity
I have a table: table votes ( id, user, email, address, primary key(id), ); Now I want to make the columns …
mysql unique-constraint composite-key database-tableI have a Java bean. Now, I want to be sure that the field should be unique. I am using …
java jpa unique-constraintI have SQL Server 2008 R2 and I want to set a unique column. There seems to be two ways to …
sql sql-server sql-server-2008 unique-constraintI have the following table: tickername | tickerbbname | tickertype ------------+---------------+------------ USDZAR | USDZAR Curncy | C EURCZK | EURCZK Curncy | C EURPLN | …
sql database postgresql indexing unique-constraintI have an already existing table with a field that should be unique but is not. I only know this …
mysql unique-constraintI have a table in PostgreSQL where the schema looks like this: CREATE TABLE "foo_table" ( "id" serial NOT NULL …
sql postgresql unique-constraintSo I know in MySQL it's possible to insert multiple rows in one query like so: INSERT INTO table (col1,…
mysql unique-constraint multiple-recordsI have an email column that I want to be unique. But I also want it to accept null values. …
mysql database unique-constraintI have a table 'users' with 'login' column defined as: [login] VARCHAR(50) UNIQUE NOT NULL Now I want to remove …
sql database sql-server-2005 unique-constraint non-clustered-indexI'm trying to create a new row in a table. There are two constraints on the table -- one is …
oracle unique-constraint